Shaving heads
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Joined: Nov 2005
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Shaving heads
To increase compression can i shave a little bit off the bottom of the heads ans/or get thinner head gaskets, will it increase comepression, what else will increase compression? this is on any V8 engien, but im wondering about doing it to a late 70's 351(M,W,and C)
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Joined: Nov 2001
Posts: 3,351
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From: Escondido, CA
The best place to get that info would be in the engine forums. But I can say you for certain that shaving the heads will not give a lot of compression. The piston type determines that more then any thing. With a thinner head gasket, .042 compressed hieght, and milling the heads .020 will give at best .5 more compression. How much are you looking for?
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Joined: Sep 2006
Posts: 197
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From: commerce city co
be better using flat top or domed pistons with small chamber heads shaving the heads will give you a smaller chamber but doesnt make that much difference a 70 to 72 clevland 4 bbl was 10:1 comp 73 and later was 8:5:1 for feul and emission purposes also keep in mind to watch valve clearence when milling heads and chaning pistons but a good machine shop will help you with that 351m not a real good builder windsor is the easist and cheapest for parts and aftermarket availibility
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