[nasty92LX]

I blew my headgasket about a week ago .I bought the felpro mls head gaskets. They gave me a 4.200 bore size when a stock 302 is 4.000. Will this be ok.

[Speedstang302]

wait when a engines bored .30 over, doesnt that calculate to a 4.030 bore..well if you're saying 4.200 that means a 200 overbore..or am i just that confused right now..and just have the engine bored to fit the gaskets now..

jpjp i think that the gasket being bigger than the cylinders, will make it leak..

[Speedstang302]

i think if it was opposite way, gasket smaller than cylinder than it maybe able work..but not in ur case..

[nasty92LX]

someone told me it will work fine it just will lower the compres.

[woody1]

it will work but I wouldnt use it personally, go get a 1011-1, a typical 1011 fel pro head gasket, .041 thick has a bore of 4.100, yes it will lower the compression

[nasty92LX]

i already put it on the car

[ryans88gt]

Don't worry about it, it might lower your compression from 9.20:1 to 9.18:1 or something like that. you talking about an additional 1/2 cc or less. It should work fine on you car.

[ryans88gt]

OK, I did the calculation for you.

With a 64cc head on a 302 with a 4.1 head gasket and 0 deck and 0 chamfer you would have a 9.51 compression ratio.

Same combo with a 4.2 head gasket = 9.46:1

[nasty92LX]

okk what do you put your heads to. I did mine from the inside out side to side 25lbs then 45lbs then 70lbs.

[ryans88gt]

Originally Posted by nasty92LX okk what do you put your heads to. I did mine from the inside out side to side 25lbs then 45lbs then 70lbs.

Mine are torqued to 125 ftlbs. But they are Cleveland heads, so.... anyway.

It depends on what heads you are using, what gasket, etc...but 70 ftlbs sounds about right for a stock motor.

Also, don't forget to do a retorque...most head gaskets these days let you do a cold retorque, but you should read the instructions that should have come with the head gasket.