Thicker head gasket question
Thread Starter
Cruising
Joined: Sep 2005
Posts: 11
Likes: 0
Thicker head gasket question
Good morning guys/gals,
i am running a 383 stroker in my 77 and having problems with engine ping on pump gas. If I mix in 4-5 gallons of cam 2 fuel to a tank of gas I have no problem at all. Its a 383 stroker with gm perf.fast burn heads and we have figured the comp. ratio to be around 11.5 to 1 . The current head gasket thickness is .042 I have been told to change the gasket to a .075 thick gasket to reduce the compression 1 point. Any thought or suggestions would be greatly appreciated. Have a good one and thanks in advance.
i am running a 383 stroker in my 77 and having problems with engine ping on pump gas. If I mix in 4-5 gallons of cam 2 fuel to a tank of gas I have no problem at all. Its a 383 stroker with gm perf.fast burn heads and we have figured the comp. ratio to be around 11.5 to 1 . The current head gasket thickness is .042 I have been told to change the gasket to a .075 thick gasket to reduce the compression 1 point. Any thought or suggestions would be greatly appreciated. Have a good one and thanks in advance.
Le Mans Master
Joined: Apr 2005
Posts: 6,350
Likes: 423
From: Seattle Area WA
Increasing the quench can sometimes have an adverse effect. That is a lot of compression, what cam are you running, doesn't sound like it is allowing enough dynamic compression to bleed off?
Drifting
Joined: Aug 2005
Posts: 1,682
Likes: 3
From: League City TX
You need to check your total timing. Fast burn heads dont need a lot of advance.
No way would I put .075" head gaskets on it.
Do you know what the deck height of the pistons are?
If its a stockish .025" or so, a thinner head gasket might actually help.
No way would I put .075" head gaskets on it.
Do you know what the deck height of the pistons are?
If its a stockish .025" or so, a thinner head gasket might actually help.
