Sbc 350 Oil Pressure At Idle

Sbc 350 Oil Pressure At IdleFrom the 1987 GM service manual engine specifications for 5. When the engine is cold at start up the pressure gauge reads 30PSI plus. There are times that just putting a new oil pump has made a difference. Steve cheviac, May 16, 2015 SHARE POST #13 36-3window Member from waiting for the swamp to drain i hope you used a heavy duty oil pump drive shaft. Since oil viscosity is inversely related to oil temp, as already stated git the coolant temps under control then look at the pressure again. Diagnosing incomplete oil pressure on a small. Dave Daves Hot Rod Shop KC Mo Reply Save Like B BogiesAnnex1 · #7 · Mar 12, 2009 chevy bb 572 said:. The oil weight will make a large difference especially when cold. Standard small block chevy oil pump = 100+psi running @ 3500 RPM. Low / No oil pressure question sbc 350. 88 chevy 350 low oil pressure at idle when hot but is fine when above idle, or cold. If you’re experiencing this problem, try checking both your coolant and oil levels and see if there’s anything wrong. i have low to no oil. Finally seems like I've fixed the low oil pressure issues I have been having in my 1990 Camaro with a Small Block Chevy 350 with a Holley Sniper EFI. This results in unfiltered oil going direct to the bearings. I primed the new pump and saw a full 60 lbs with the electric drill. chevy 350 low oil pressure at idle. I have a question in reference to the oil pressure on a small block 350. The new engine has the same oil pressure issue. Changed the panel gauge transducer that is just above the oil filter and showed 30 psi on that gauge @ idle. At idle if you are making 10 psi and all is quiet you are fine. Hot at cruising speed, it's about 35 lbs. Above with warm but not up to op temp oil. On the other hand, oil pressure above 80 PSI is too high. Ive been cruising the wagon and I noticed that it got very low oil pressure at idle when its at temp In gear at full operating te. There are times that just putting a new oil pump has made a difference. The pressure is fine at cruise and when it is cold, but it is alarmingly low at idle. The bypass valve usually lifts off its seat at a maximum of 14 to 15 psi, but when the oil is cold it’s not uncommon for the pressure differential across the filter to exceed the bypass-release pressure. After a short time of idling, the pressure should start coming up a bit more. It does show 40 to 50 while cruising. If the oil pressure exceeds normal parameters, it’s considered too high. Standard small block chevy oil pump = 100+psi running @ 3500 RPM. i have a mechanical pressure gauge high oil pressure in my sbc 350 (idle, best, engine, sensor) - Automotive -Sports cars, sedans, coupes, SUVs, trucks, motorcycles, tickets, dealers, repairs, gasoline, drivers. 69-CHVL said: Oil filters can absolutely make a difference in pressure. Start the engine, watch the oil pressure and see where it goes. If the oil pressure is starting to go down when the engine is. At idle if you are making 10 psi and all is quiet you are fine. The bypass valve usually lifts off its seat at a maximum of 14 to 15 psi, but when the oil is cold it’s not uncommon for the pressure differential across the filter to exceed the bypass-release pressure. Need help if anyone has any good advice on a 78 Camaro Z28 350's oil pressure. Tom Reply Save Busted Knuckles · #6 · May 27, 2019 What does Blueprint say? Gary Adrian. That’s why I thought it was a good idea to get some input on this. Can lifters cause oil pressure issues?. It runs great But at idle the oil pressure sits at 14 psi. small block chevy oil pressure. See more Reply Save Like Novaman Oscar · #6 · Jun 21, 2011. Chevy Small Block Engines">Lubrication Systems Cheat Sheet for Chevy Small Block Engines. I had a tired 350, 1psi at hot idle, put in a new hi volume hi pressure pump and it went up to about 30 hot idle. 350 TBI Oil Pressure Sensor Leak. That's the most common reason for a loss of oil pressure in the 350 engine. If the oil pressure is starting to go down when the engine is warm, just change to a heavier grade oil at your next oil change. Fellers, I have a 350 SBC in my Model A, runs quiet and smooth. The oil is cold the clearances are tight and it's on the bypass, pressure bypass not filter. Stock oil pressure in a 350 SBB is 37 psi @ 2400 RPM. While all cars require oil to keep their engine functioning properly, the ideal oil pressure for each vehicle can vary depending on the brand, model and type of engine. Fixing a Small Block Chevy Low Oil Pressure Issue!. Meiling high volume small block chev = 150+psi running @3500 RPM. I purchased a new 350-cubic-inch GM crate motor. Gets hot, at idle, it drops to probably 8-10 lbs. Chevy 350 Oil Pressure: All You Need To Know (Explained!). 69-CHVL said: Oil filters can absolutely make a difference in pressure. SBC 350 oil pressure, how much is too much ?. Car oil pressure: 25 to 65 PSI while driving, 20 to 30 PSI at idle Truck oil pressure: 30 to 70 PSI while driving, 25 to 35 PSI at idle Anything going lower than the minimum is considered to be running low. I also have a1947 straight 8 Pontiac that gets 40 to 45 running at 2700 rpms. 350 TBI Oil Pressure Sensor Leak - YouTube 0:00 / 9:04 350 TBI Oil Pressure Sensor Leak Driven By Gears 6. The motor is currently in a 67 camaro and has approximately 300 miles on it since a rebuild. It doesn't change between idle or full throttle. 20W50 fixed it right up, and it even started OK down to 0F! Might need something a little thinner in SD winters, though. If you've been using 5W15, change to 10W30 or even heavier. Oberg external oil filter system. There’s plenty on the driver’s side, and a mechanical oil-pressure gauge shows about 40 psi. The new engine has the same oil pressure issue. Changed the panel gauge transducer that is just above the oil filter and showed 30 psi on that gauge @ idle. I just like a bit more oil pressure. Second is the pickup is no longer attached to the pump. i have seen the same thing with countless small blocks that never. Low Oil Pressure at Idle: What Possible Causes and How To Fix?. When the engine is cold, it runs 45-50 lbs of oil pressure. That oil flows through various parts of the engine as it runs, and needs to be pressurized to move. When the engine is cold, it runs 45-50 lbs of oil pressure. What psi of oil pressure is suggested on a 350 engine at idle and. If everything looks normal, it might be time for car maintenance!. I now noticed the oil pressure running about 5 psi at idle (~1100 rpms. Sounds like my (departed) 200K mile+ 350 TBI Suburban-I think mine had bad cam bearings. Chevy 350 engine oil pressure at idle:. I know the pressure shouldn't stay the same throughout the RPM range, should it? The engine purrs like a kitten, doesn't overheat, so I know it's getting oil. Normal oil pressure range: Car: 25-65 PSI, 20-30 PSI at idle. my 383 has 25psi at idle fully warmed up and 55psi going down the freeway at 2500 rpm. Is that an acceptable oil pressure? edit: maybe I should clarify. This will vary slightly depending on the temperature of the engine. At the start of the vehicle the oil pressure is b/w 40-60 & no engine ticking. Normal oil pressure on a small block 400?. I think it is the guage but am not sure, do not want to mess the engine up. No knocks, no blowby, no rattles, just super low hot oil pressure in. Diagnosing incomplete oil pressure on a small-block Chevy. Diagnosing incomplete oil pressure on a small-block Chevy. Sbc 350 Oil Pressure At Idle. they are a little higher pressure. A little smoke on start up but not bad. Joe [Log in to Reply] [No Email] yellowdog 02-23-2005 16:23:44. Chevy 350 low oil pressure BeeterOlds Garage & Budget Builds 16. Truck: 30-70 PSI, 25-35 at idle. I never would've believed that a. Ive been cruising the wagon and I noticed that it got very low oil pressure at idle when its at temp In gear at full operating te. This is why nearly every car has an oil-pressure warning light. I purchased a new 350-cubic-inch GM crate motor. i have low to no oil pressure unless its cold and it shows 15-20 psi. It doesn't make any noise and runs great. Oil pressure reading taken after filter. Runs strong even though it's a stock engine. More than likely the replacement melonized gear will solve your errant timing issue but there’s no guarantee this is a permanent solution. Low oil pressure at idle when hot is a common issue with Chevy 350 engines. I'm using a Speedmaster oil primer and a half-inch corded variable-speed drill with plenty of power to prime it. i have seen the same thing with countless small blocks that never had. I have a weird thing happening with my small-block Chevy crate engine that has me scratching my head. When the engine is cold at start up the pressure gauge reads 30PSI plus. Fellers, I have a 350 SBC in my Model A, runs quiet and smooth. Comes right back up as soon as rpm comes up. No knocks, no blowby, no rattles, just super low hot oil pressure in idle, sub 10 PSI. Cold idle 22psi @ 750 rpm. I also installed a mechanical pressure gauge directly on the block. If the oil pressure exceeds normal parameters, it's considered too high. Using Oil Of Wrong Viscosity 3. stock 350ci oil pressure drop at idle?. My engine always had low oil pressure at idle. Lubrication Systems Cheat Sheet for Chevy Small Block Engines. After the motor is completely warmed up (around 190-200 degrees) the oil pressure gets very low (at 0 / almost 0). While these pressure measurements are within the typical range, each vehicle is different. I run 5W30 Mobil 1 in my daily driver. Stock volume pump, 20w50 mineral oil. SBC oil pressure question. so i have a 350 that was just rebuilt. Sounds like a high pressure pump starting with cold oil then warming up. My present is a350 that has been together since 1997 with 60 cold and 25 to 30 at idle cold. At idle if you are making 10 psi and all is quiet you are fine. Dirty Oil Filter Best Practices To Maintain Correct Oil Pressure FAQs: Why is the oil pressure good when cold bad when warm?. 88 chevy 350 low oil pressure at idle. If your chevy 350 is idle, you must have a minimum oil pressure of only 5 PSI or thirty-five points five kpa. Check the owner’s manual to verify that oil pressure readings are within a normal range. 50 or so lbs at startup, dropping to 7 -8 at idle, and less than 20 at a few thousand RPM when hot. From day one from when I got it worked out and running. Nothing is more important to your engine than the flow of oil. While Merc does indicate a minimum oil pressure of around 4psi, this should only be seen after coming off plane with the engine hot. We set our spring pressures to 70PSI on prime and that's what a cold start will show at idle. 50 or so lbs at startup, dropping to 7 -8 at idle, and less than 20 at a few thousand RPM when hot. The oil pressure readings are very low. SW mech guage with clear tube for sender, and no oil was moving through the sender. Cold idle 22psi @ 750 rpm. no oil pressure at all when started. When the truck is at warm idle the pressure should be within this range: 25 – 40 PSI When you are driving at speed the pressure should be within this range: 40 – 70 PSI These numbers are a guide and not a hard and fast rule. Is this ok? It never leaks oil, engine bay is clean, no coolant leaking, oil level looks good etc. New melling HV55 that was gone through before assembly. Re: chevy 350 oil pressure in reply to 37 chief, 02-23-2005 13:04:26 5W30 means the oil is the equivilent of 5 weight oil when cold (good for cold starts) and 30 weight oil when hot. ) It'll bump up to about 20 psi when you goose it, but when the idle settles down the oil press drops back to around 5 psi. Gets hot, at idle, it drops to. See more Save poncho62 · #3 · Mar 13, 2005 You will find that most SB Chevys run at about 45psi and it drops off to about 15-20 psi at idle. Feed main oil pressure to rear block. When the engine is cold, you should see the MAXIMUM oil pressure. Is it normal for the oil pressure on a Chevy 350 to be 50-60 when cold but go down to 20-30 when hot and 10 at idle if the engine sounds fine and is newly rebuilt and runs well? I have a 98. If the oil pressure is starting to go down when the engine is. On the other hand, the minimum oil pressure of two thousand engine rpms is about thirty-five psi or two hundred forty-one kpa. Low Oil Pressure At Idle – Common Causes & How To Fix. Sounds like my (departed) 200K mile+ 350 TBI Suburban-I think mine had bad cam bearings. what is normal oil pressure for a 350? At idle mine is around 30lbs, at 65-70mph the gauge reads just below 60lbs. It runs one line above the first big line which I think is 20 (the big line is 20). 388 SBC. Re: chevy 350 oil pressure in reply to 37 chief, 02-23-2005 13:04:26 5W30 means the oil is the equivilent of 5 weight oil when cold (good for cold starts) and 30 weight oil when hot. No oil gets to the rocker arms on the passenger side. Standard small block chevy oil pump = 100+psi running @ 3500 RPM. Click to expand Sorry about that, the oil pressure drops to 0 really fast at idle but if you touch the gas it shoots back up really fast. Stock volume pump, 20w50 mineral oil. The engine is a 290-horsepower Chevy crate engine with a set of headers, a Holley dual plane intake, a 750 Holley 0-3310C Holley carburetor, and an MSD Ready-to-Run distributor with a matching coil. i have a 350 that runs ( hot temps ) 25 psi parked and 52 psi down the road. Hot at idle in drive, 20 psi is. SBC oil pressure question. Low oil pressure on idle normal?. I've read that 10 psi is normal on these cars, but was. Any other time it is up to 30 or 40 psi. oil pressure to go to 0 when I let off the gass">What causes oil pressure to go to 0 when I let off the gass. Wet sump oiling. Need help if anyone has any good advice on a 78 Camaro Z28 350's oil pressure. At idle if you are making 10 psi and all is quiet you are fine. The normal oil pressure on a 2002 Chevy S10 V6 is around 40 PSI. My 496 gets down to 20psi if the oil is 200* at a 750 idle, but I kick it into neutral at red lights and it comes up to 30 psi at 1100rpm. Sounds like my (departed) 200K mile+ 350 TBI Suburban-I think mine had bad cam bearings. There is no written specification for a SBC's oil pressre at idle. This will measure the low five psi readings. I recently rebuilt my 350, and it has very low, barely off 0 oil pressure at hot idle in gear (about 700 RPM). 88 chevy 350 low oil pressure at idle when hot but is fine when above idle, or cold. 1956 210 del rey sedan 383 700r4 12 bolt posi. Mileage is approx 140 000 Idle is a little rough but not too bad. At warm idle it goes b/w 0-10 w/engine Vocational, Technical or Tra I have a 350 5. whats the best weight oil for sbc &whats good oil presure. Once the engine gets to operating temp pressures will come down. No oil gets to the rocker arms on the passenger side. Is it normal for the oil pressure on a Chevy 350 to be 50-60 when cold but go down to 20-30 when hot and 10 at idle if the engine sounds fine and is newly rebuilt and runs well? I have a 98. Something isn't right because the pressure goes from 65 to 3, that is a very large swing. The oil is cold the clearances are tight and it's on the bypass, pressure bypass not filter. go get the oil pump for a 96-99 vortec 350. See more Save poncho62 · #3 · Mar 13, 2005 You will find that most SB Chevys run at about 45psi and it drops off to about 15-20 psi at idle. Since oil viscosity is inversely related to oil temp, as already stated git the coolant temps under control then look at the pressure again. but when it warms up some it shows like 2 maybe none pressure. The pressure is fine at cruise and when it is cold, but it is. I recently rebuilt my 350, and it has very low, barely off 0 oil pressure at hot idle in gear (about 700 RPM). what is normal oil pressure for a 350? At idle mine is around 30lbs, at 65-70mph the gauge reads just below 60lbs. com">Oil pressure problems Too High on new rebuild. It is around 20 psi on idle when cold. com%2fchevy-350-oil-pressure%2f/RK=2/RS=FmxulC0qcRi6xwTxRk2h8sbIAjQ-" referrerpolicy="origin" target="_blank">See full list on piketransit. If the engine warms up and the oil pressure starts to go down, you have worn bearings. It goes up to great pressure when the rpms are at cruising. Vinny, That is true on certain engines but on a Chevy V-8 with a properly operating bypass valve it does not matter if the filter is totally clogged up or collapsed, the oil pressure should be the same. Yesterday, I started the car up to let it warm up. Worn-Out Or Missing Bearings 5. Chevy 350 low oil pressure BeeterOlds Garage & Budget Builds 16. At the start of the vehicle the oil pressure is b/w 40-60 & no engine ticking. it has a stock oil pan and a stock oil pump. You may want to verify what weight is recommended, since you describe it as a stock 350. When the engine is running, the oil pressure stays the same on the in-dash gauge, around 80psi. You need at least 10 lbs. This is probably going to sound weird, but I had an old Vette with a 350 engine in it that had 55,000 miles on the rebuild, and it always showed 18-20 PSI at an 800 RPM idle, and all I did was performed a cam swap, and the idle PSI dropped to 7 PSI! The pressure climbed to 35 PSI by 2,500 RPM. The pressure is fine at cruise and when it is cold, but it is alarmingly low at idle. For comparison, a relative had a stock 350 which had a 10# idle pressure new, and i was amazed that he never had trouble using it as a farm truck and now has over 100k miles. Only at speed is oil pressure critical. On the other hand, oil pressure above 80 PSI is too high. Oil Pressure Drops To Zero When Warm. Car oil pressure: 25 to 65 PSI while driving, 20 to 30 PSI at idle Truck oil pressure: 30 to 70 PSI while driving, 25 to 35 PSI at idle Anything going lower than the minimum is considered to be running low. Re: SBC 350 oil pressure, how much is too much ? a lot of small block chevies will go as low as 5 or 6 psi at idle and live a very long time. Re: SBC 350 oil pressure, how much is too much ? a lot of small block chevies will go as low as 5 or 6 psi at idle and live a very long time. These oil pressures are using a mechanical oil pressure gauge. The specification for a SBC's oil pressure is 35 psi at 1500 rpms. You may want to verify what weight is recommended, since you describe it as a stock 350. It does not seem like a gauge problem because the valvetrain is noisy when I open the hood to check it at hot idle (it is not noisy at cold idle). Depending on what type of oil pump you have 15 to 20 psi at idle is normal. if I drive the car before totally warmed at 55 mph I see 80 psi. Upping the first number (the 5) to a 10 only means the oil will be thicker at start up (slows the oil reaching the top end when cold). Without the correct amount of oil pressure, your engine could suffer from a variety of issues, including. I screwed something up. 350 Oil pressure and RPM question. Okay guys, i have searched through tons of oil pressure forums on here and havent found my answer. Chevy 350 Oil Pressure: All You Need To Know …. I never would've believed that a. BBC low oil pressure question. Your car’s built-in pressure sensors are not the most reliable. When I first start this vehicle, the oil pressure is great (around 40-50 psi), but as the engine temperature increases, the oil pressure drops. chevy 350 low oil pressure whats the deal?. so i have a 350 that was just rebuilt. Low oil pressure at idle when hot is a common issue with Chevy 350 engines. I also installed a mechanical pressure gauge directly on the block. Rechecked with two different mechanical gauges. i know mine does and has forever. That's the most common reason for a loss of oil pressure in the 350 engine. (car needs more converter) That's with 10w-40 oil. Oil pressure was always on the low side. Discussion in ' The Hokey Ass Message Board ' started by Smilin Jack, Aug 27, 2011. also at higher rpms like before. will peg the guage out at cold startup then after a hard highway run will idle between 5 and 10 psi. I recently rebuilt my 350, and it has very low, barely off 0 oil pressure at hot idle in gear (about 700 RPM). oil for sbc &whats good oil presure">whats the best weight oil for sbc &whats good oil presure. The needle will rise rapidly until the bypass valve starts dumping. What psi of oil pressure is suggested on a 350 engine at idle. oil psi drops when rev up (solved!). When the car is first cranked it shows about a 60 psi, but when the car gets to operating temperature, around 200 degrees F, at idle the oil pressure drops rapidly and steadies at about a 13-15 psi. 7 Low oil pressure after running. It's a great old engine, as tough as they get. For comparison, a relative had a stock 350 which had a 10# idle pressure new, and i was amazed that he never had trouble using it as a farm truck and now has over. 3 oil pressure specs – What Should the Oil. If the pressure is low at idle, but satisfactory at higher RPM, you can try installing a booster plate and blueprinting the clearances inside the pump. after warm and driving it levels out at 65-70 as speed varies. The most likely causes are either lack of coolant or a bad oil pump. 88 chevy 350 low oil pressure at idle when hot but is fine when above idle, or cold. What causes oil pressure to go to 0 when I let off the gass. acceptable hot idle oil pressure for 5. I recently rebuilt my 350, and it has very low, barely off 0 oil pressure at hot idle in gear (about 700 RPM). Ive been cruising the wagon and I noticed. i have low to no oil pressure unless its cold and it shows 15-20 psi. Pretty much a rebuild GM Goodwrench 350. This is one of the most important factors to consider when it comes to proper engine maintenance. Advice please 454 low oil pressure. Gerald66. This engine has 121k miles on it, original oiling system as far as I know, although the pan gasket has been replaced according to records. When the truck is at warm idle the pressure should be within this range: 25 – 40 PSI When you are driving at speed the pressure should be within this range: 40 – 70 PSI These numbers are a guide and not a hard and fast rule. Oil Pressure at Idle (Diagnosis and How to ">What Causes Low Oil Pressure at Idle (Diagnosis and How to. Fellers, I have a 350 SBC in my Model A, runs quiet and smooth. You may want to verify what weight is recommended, since you describe it as a stock 350. Truck: 30-70 PSI, 25-35 at idle. The most likely causes are either lack of coolant or a bad oil pump. of oil pressure for every 1000 rpm's. 001" difference in the cam journal diameters would make such a big difference in the oil pressure at idle, but it did in the case of my SBC engine as far as I know, because that was about a 20 PSI drop at idle which was NOT present until I performed the cam swap. On a fresh engine with a high pressure oil pump 30 psi @ warm idle is normal, with a standard pressure pump somewhere around 20 psi is normal - I would not worry about 15 psi if you are seeing 35-40 psi @ cruise. See more Save poncho62 · #3 · Mar 13, 2005 You will find that most SB Chevys run at about 45psi and it drops off to about 15-20 psi at idle. However a rapid degradation in pressure id a problem. Okay guys, i have searched through tons of oil pressure forums on here and havent found my answer. Normal oil pressure range: Car: 25-65 PSI, 20-30 PSI at idle. com/_ylt=AwrNPPB58lZk6WErJCZXNyoA;_ylu=Y29sbwNiZjEEcG9zAzMEdnRpZAMEc2VjA3Ny/RV=2/RE=1683448569/RO=10/RU=https%3a%2f%2fpiketransit. when you rev it up anything above 2800 oil psi drops to about 30 as long as you are accelerating as …. That's the most common reason for a loss of oil pressure in the 350 engine. Between 35 to 45 psi at idle and up to 55 lbs at speed would be sufficient. Low to no oil pressure on a small block 350. They are not known for high pressure, and don't need it. Oil Pressure Drops To Zero When Warm [7 Easy Fixes] 1. 2K views 5 months ago Finally seems like I've fixed the low oil pressure issues I have been having in my 1990 Camaro with a Small Block Chevy 350 with a Holley Sniper EFI. About 20psi hot with 20w50 oil with the old short block. The oil pressure readings are very low. I just put a new oil pump in my 350 after i chromed out the engine and new intake. i have already done a search and found lots of questions like this but no real answer. What Causes Low Oil Pressure at Idle (Diagnosis and How to Fix …. Oil pressure was always on the low side. SBC oil pressure question. Rechecked with two different mechanical gauges. oil pressure, cold at idle , 1000 rpm is 65. Pressure-Relief Valve. If your chevy 350 is idle, you must have a minimum oil pressure of only 5 PSI or thirty-five points five kpa. 7 L (350 cid): "Oil press 10 psi @ 500 RPM; 30-55 psi @ 2000 RPM". i have already done a search and found lots of questions like this but no real answer. 88 chevy 350 low oil pressure at idle when hot but is fine when above idle, or cold. Oil Pressure Drops To Zero When Warm [7 Easy Fixes] 1. As I'm sure you won't be doing any sub-zero driving. Today I replaced my so called "high volume" oil pump for the conventional Melling factory type and the oil pressure remains low at 5 psi on idle. Most are right around the 40-psi mark. The most is that is has a mild RV cam in it with dish pistons. The number one cause of this problem is clearance between the pan and the oil pump pickup. Finally seems like I've fixed the low oil pressure issues I have been having in my 1990 Camaro with a Small Block Chevy 350 with a Holley Sniper EFI. Check the owner’s manual to verify that oil pressure readings are within a normal range. High Oil Pressure: Symptoms, Causes, and Repairs. Only at speed is oil pressure critical. On a fresh engine with a high pressure oil pump 30 psi @ warm idle is normal, with a standard pressure pump somewhere around 20 psi is normal - I would not worry about 15 psi if you are seeing 35-40 psi @ cruise. Is 20 PSI oil pressure at idle OK? The typical oil pressure for an engine when idling should be between 20-30 PSI (pounds per square inch). Engine does not burn oil. Too much oil pressure SBC. Faulty Oil Pressure Sending Unit 6. a synthetic 10W30 would be good for street use. it will go to around 70psi at WOT. Hot 190F idle 8 - 10psi @ 700 rpm. Oil pressure problems Too High on new rebuild. Reused the top end, heads, cam lifters etc. Rule of thumb is 12/15 psi oil pressure per 1000 rpm on a healthy Chev small block. Idle pressure according to cluster gauge is about 22 psi hot. Hot 190F idle in gear 5psi @ 600 rpm (Lifters. I pulled the dizzy and used a drill and oil primer and finally got the oil pressure to move but it was low, only 20 or so with the drill full on. If oil stops coursing through the engine’s passageways, the result will be catastrophic failure. Re: SBC 350 oil pressure, how much is too much ? a lot of small block chevies will go as low as 5 or 6 psi at idle and live a very long time. Between 35 to 45 psi at idle and up to 55 lbs at speed would be sufficient. When I first start this vehicle, the oil pressure is great (around 40-50 psi), but as the engine temperature increases, the oil pressure drops. Most small block chevys that I’ve seen typically have had a hot idle oil pressure of around 20 to 25 PSI with a standard pump. Minimum oil pressure at idle. 7L motor gets hot lose oil pressure shut down cool off starts right up run fine Chevy Technician. BlueOvalFitter Site Donor 2023 Joined Feb 28, 2003. Right now I'm running 10w30 and have 70psi at idle on a cold start, about 40psi hot cruising on the highway at 2200 rpm and it drops to 10psi at idle when hot. It does not seem like a gauge problem because the valvetrain is noisy when I open the hood to check it at hot idle (it is not noisy at cold idle). It's a great old engine, as tough. Chevy 350 low oil pressure BeeterOlds Garage & Budget Builds 16. 1968 Camaro 468 bbc power glide 12 bolt. These oil pressures are using a mechanical oil pressure gauge. Oil being used is 10W40. What is normal oil pressure for a 350 sb Chevy when hot?. For comparison, a relative had a stock 350 which had a 10# idle pressure new, and i was amazed that he never had trouble using it as a farm truck and now has over 100k miles. Oil pressure reading taken after filter. The motor is currently in a 67 camaro and has approximately 300 miles on it since a rebuild of the short block. Meiling high volume small block chev = 150+psi running @3500 RPM. Click to expand Sorry about that, the oil pressure drops to 0 really fast at idle but if you touch the gas it shoots back up really fast. 350 chevy with low to no oil pressure. BUT if you ASSUME that the oil pressure "idiot" light doesn't come on till the oil pressure is below 5 psi, one might "assume" that the minimum oil pressure is 6 psi?. i got a new gauge and its not the gauge. The most is that is has a mild RV cam in it with dish pistons. If so, replacing the stock pressure relief spring with a white Stage1 spring might give you more at higher RPM. I have a question in reference to the oil pressure on a small block 350. However a rapid degradation in pressure id a problem. If you rev it up and it goes to 100, then that would be abnormal. BillyGman. I am assuming 5 psi is bad, my buddy who was with me was pretty concerned, said it should be closer to 60 psi - "BBC's need lots of oil pressure". will peg the guage out at cold startup then after a hard highway run will idle between 5 and 10 psi. 7K subscribers Subscribe 90 Share Save 22K views 2 years ago I screwed something up. Blueprint doesn’t seem that concerned with it. While breaking the engine in, use dino oil so the rings will seat. But when I drive it, the same problem remains. That oil flows through various parts of the engine as it runs, and needs to be pressurized to move. So if you are using a 20w50 oil with high oil pressure (70-80 psi) when the engine is cold, that places undue stress on the distributor gear. Between 35 to 45 psi at idle and up to 55 lbs at speed would be sufficient. While these pressure measurements are within the typical range, each vehicle is different. The pressure is fine at cruise and when it is cold, but it is alarmingly low at idle. Vinny, That is true on certain engines but on a Chevy V-8 with a properly operating bypass valve it does not matter if the filter is totally clogged up or collapsed, the oil pressure should be the same. 2K views 5 months ago Finally seems like I've fixed the low oil pressure issues I have been having in my 1990 Camaro with a Small Block Chevy 350 with a Holley Sniper EFI. Bye Bye oil pressure! Chevy 350 low oil pressure. On occasion, changing to synthetic oil on an engine with the pressure relief valve at the lower mark will cause the oil pressure to drop as much as another 5 psi. go get the oil pump for a 96-99 vortec 350. They do think that it is sucking oil in through the intake rocker arm studs. While breaking the engine in, use dino oil so the rings will seat. i have high oil pressure now. I wouldn't mind seeing it a little higher with hot oil, considering switching to a heavier oil to see if it bumps up. When the car is first cranked it shows about a 60 psi, but when the car gets to operating temperature, around 200 degrees F, at idle the oil pressure drops rapidly and steadies at about a 13-15 psi. Gets hot, at idle, it drops to probably 8-10. Ideal is around 15-20 lbs per 1000 rpm's. If your looking for a cheap fix. TBI 350 Oil pressure and RPM question. If you’re experiencing this problem, try checking both your coolant and oil levels and see if there’s anything wrong. of oil pressure for every 1000 rpm's. You don't state what the oil weight is that you are using. Need help if anyone has any good advice on a 78 Camaro Z28 350's oil pressure. 59K subscribers 18K views 3 years ago Finally after long being over due i remove. Cold idle 22psi @ 750 rpm Hot 190F idle 8 - 10psi @ 700 rpm Hot 190F idle in gear 5psi @ 600 rpm (Lifters start clattering) Pressure with the engine at 190F rises to 20-25psi around 2000rpm then stops climbing. Last year I replaced the short block with a new bowtie block, steel crank, rods etc. Car oil pressure: 25 to 65 PSI while driving, 20 to 30 PSI at idle Truck oil pressure: 30 to 70 PSI while driving, 25 to 35 PSI at idle Anything going lower than the. ">SBC oil pressure question. After it warms up and at a stop in drive the pressure will drop to approx 5 PSI and will even dip to 1 or 2 PSI. but when it warms up some it shows like 2 maybe none pressure. There's plenty on the driver's side, and a mechanical oil-pressure gauge shows about 40 psi. New SBC rebuild hot idle low oil pressure. Most stock small-block Chevy pumps deliver oil pressure between 35 and 45 psi. I recently rebuilt my 350, and it has very low, barely off 0 oil pressure at hot idle in gear (about 700 RPM). Hot 190F idle in gear 5psi @ 600 rpm (Lifters start clattering) Pressure with the engine at 190F rises to 20-25psi around 2000rpm then stops climbing.