Using thicker head gasket to lower compression?

[FrumRoll]

Is this an OK practice? Or is it simply the cheap and wrong way to do it? Basically I would like to run GT40P heads with a #19 cam on a stock shortblock, and then throw a Novi at it. Can I lower the compression using a thicker head gasket, or is this really not recommended. How about some recommendations on what head gasket to use.

Thanks

 

[86bluecobra]

yah it can work. maybe the chaep way of doing things but it will work just fine. i forget the brand of head gasket it starts with a C kinda like comsic anyways someone will chime in with the name.

 

[Grn92LX]

Why do you need to lower the compression on a stock shortblock when its already low to begin with? It'll hurt your quench and make you more prone to detonation.

 

[FrumRoll]

Why do you need to lower the compression on a stock shortblock when its already low to begin with? It'll hurt your quench and make you more prone to detonation.

I've been told the GT40P will raise compression to roughly 9.6:1 a little more then I'd like to run on the stock shortblock with a Novi-2k where pulleying for anything less than 8psi is difficult.

 

[Grn92LX]

9.6:1 is nothing IMO.

Besides, don't listen to what people tell you w/o actually MEASURING! If those heads are in the 64cc range you are not 9.6:1.

 

[SQUEEZE&STROKE]

They are cometic head gaskets...or try SCE in California.

 

[86bluecobra]

They are cometic head gaskets...or try SCE in California.

thx for the help with the name of the head gasket.

 

[FrumRoll]

9.6:1 is nothing IMO.

Besides, don't listen to what people tell you w/o actually MEASURING! If those heads are in the 64cc range you are not 9.6:1.

I do intend to measure before ordering head gaskets, however the GT40p's I'm installing have been worked over and should be closer 60cc's.

 

[dragnazz5.0]

you can do it with thicker head gaskets, but make sure you do the math first so you know what its gonna be before and after

 

[luckythirteen13]

i have 58cc chamber heads and run a 9psi pulley on my vortech with a power pipe (~11psi) so youll be fine

 

[FrumRoll]

i have 58cc chamber heads and run a 9psi pulley on my vortech with a power pipe (~11psi) so youll be fine

I appreciate the first hand knowledge. I assume this was before the Mr. Freeze and 12# setup in your signature?