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Sorry for the ignorant question
what should the psi (lbs) be for a 76 l48 engine? 8:5:1
I started my baby up and the engine seems to be missing (running rough) and I want to check the compression..
the engine ran hot just the week before when the radiator blew out..
Thanks
Ken
what should the psi (lbs) be for a 76 l48 engine? 8:5:1
I started my baby up and the engine seems to be missing (running rough) and I want to check the compression..
the engine ran hot just the week before when the radiator blew out..
Thanks
Ken
-Kens -76 baby- Firethorn leather
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Ken,
First off..it's not an ingnorant question.
I don't know what the exact psi is. I would think that it would be around 150 psi or higher. But if you are going to do a compression check.
Write down all your readings, then compare each cylinder reading to one another.
If one or more cylinders is more than 15% lower than your highest reading, then you have a worry.
Good luck, Sarge
First off..it's not an ingnorant question.
I don't know what the exact psi is. I would think that it would be around 150 psi or higher. But if you are going to do a compression check.
Write down all your readings, then compare each cylinder reading to one another.
If one or more cylinders is more than 15% lower than your highest reading, then you have a worry.
Good luck, Sarge
GEN III 5.7L "LS6" Engine swap
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Lifetime Member #26
Borgeson Steering Box
Born 8/1981
Sequence #3975
Click here to see more pics of my Vette on CarDomain.
Lifetime Member #26
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Send PMSHELBYVILLE, TN - USA
Joined: 7/5/2002
Posts: 3944
Vette(s): 1976 L48 auto
1978 L82 4speed
1994 LT1 6speed
1978 L82 4speed
1994 LT1 6speed
ken that compression sould be 130-150# you may have a blown head gasket good luck 
StingrayJim 
NCM Lifetime Member #1936
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