5.7L high oil pressure

Asked by Apr 18, 2016 at 12:31 PM about the 1996 Chevrolet C/K 1500 Silverado Extended Cab Stepside SB

Question type: Maintenance & Repair

I have a 1996 Chevy K1500 4x4 pick-up with a 5.7L   
I purchased a GM crate engine from Jegs and did
the swap myself. The engine runs great except for
the fact that it is running 60-80 psi oil pressure. The
high oil pressure is causing oil to travel up the
distributor chamber and is being pushed out the
distributor gasket. I've changed the oil filter and
removed and inspected the oil filter housing area.
I've also used low compressed air to blow out the
lines going to the oil cooler. (The radiator is also
new). I've been in touch with Jeg's tech support
and due to previous lawsuits they are no longer
authorized to give answers to problems. They gave
me a case # and told me to get my truck to my local
dealer. I am reluctant to do that because I have read
in many cases the GM dealers do not want to work
on warranty items that they themselves did not
install. Have you ever uncounted this problem or
have any idea what may be causing the excessive
oil pressure. Thanks for your time.

2 Answers


is the block/dist. surface true...is there any oil getting into the inside under the cap.... the pressure you have is good... keep us posted


What about the oil filter housing adapter? Is it used? There is a pressure release valve in there that may be plugged up. Also having the right gasket for the housing, on my engine I had to cut it out to open up the cavity. As Kelly stated 60 to 80 lbs. oil pressure is good. Sounds like there is a high volume oil pump installed. The say the motor should be broke in with an original oil pump first, then change out to the high volume oil pump. Also check the mating surfaces of the distributor and intake. Make sure the gasket is good by pulling out the distributor.

Your Answer

Add photo

Related Questions

  • Cracked Leaking Oil in 1998 Chevy Silverdao 5.7L 5 answers

    I have a 1998 Chevy Silverado Ext. Cab Z71 with the 350 Vortec 5.7L V8 with 203k miles on it. The truck has been running just fine until I went to the store the other morning, when I got out I could s...

    1998 Chevrolet C/K 1500 Cheyenne Extended Cab SB


    Maintenance & Repair

  • 0 oil pressure 10 answers

    I bought a 1998 chevy stepside with a 5.7 vortec engine on the 28th of april,a few days ago while driving home from work,when I tried to give it gas,it wasent accelerating,found out my engine cut i...

    1998 Chevrolet C/K 1500 Silverado Extended Cab SB


    Maintenance & Repair

  • 96 Chevy C1500 5.7L Vortec Truck won't start, Replaced Fuel Pump, Filter & Has Spark. 81 answers

    Hey everyone, I have a 1996 Chevy C1500 with a 5.7L Vortec, I got the truck recently and was told it just needed a Fuel pump, I replaced the Fuel pump, and the Filter, also the pump turns on and there...

    Chevrolet C/K 1500


    Maintenance & Repair

  • Oil pressure 1 answer

    So the other my 97 Chevy Silverado 4.3l vortec oil pressure spiked out completely. I checked the oil I seen no coolant in it. My oil level was perfect. So I did an engine flush thinking it might b...

    1997 Chevrolet C/K 1500 Silverado Standard Cab SB


    Maintenance & Repair

  • high oil pressure 2 answers

    i have high oil pressure but no oil on mu dipstick...i added 5 qts and still nothing on the dip stick and now the pressure is thru the roof...any body have any idea

    2005 Chevrolet Silverado 2500HD 4 Dr LT 4WD Extended Cab SB HD


    Maintenance & Repair

Search Chevrolet C/K 1500 Questions

Chevrolet C/K 1500 Experts

#1 Andrew Olsen
Andrew Olsen
Reputation 3,340
#2 John Saffrahn
John Saffrahn
Reputation 2,500
#3 Rowefast
Reputation 2,050
View All

Related Models For Sale

Used GMC Sierra 1500
822 Great Deals out of 68,199 listings starting at $2,484
Used Ford F-150
2,191 Great Deals out of 206,316 listings starting at $1,499
Used Chevrolet C/K 2500
214 listings starting at $2,250
Used Dodge Ram 1500
454 Great Deals out of 11,152 listings starting at $700
Used Chevrolet Tahoe
548 Great Deals out of 29,234 listings starting at $1,699
Used Chevrolet C/K 3500
237 listings starting at $4,995
Used Chevrolet Camaro
226 Great Deals out of 30,943 listings starting at $1,217
Used Toyota Tacoma
541 Great Deals out of 40,814 listings starting at $2,495
Used Chevrolet S-10
10 Great Deals out of 1,345 listings starting at $1,395

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.