ported Gt40 heads on a basically stock 302?

Here are the 3 bars you are looking for.

The "P" heads also have a "P" cast in the lower front corner of the passenger side head (if they happen to be bolted on a motor when you check) next to the valve cover rail. The spark plugs stick out nearly at a 90 degree angle to the head.

Do it

You will like these heads, nice upgrade.

I would atleast try milling the heads .020", to gain alittle compression, since the 40's have a larger chamber than the P's

triostang said:

yeah theyre gt40s not gt40ps. straight bolt on then? nothing weird like needing different size pushrods? they have 1.7 rockers anygood?

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Well that all depends if the heads were milled previously, but you should still be ok with the stock length. But I would check them first, just to be on the safe side, but it is nothing a $15 shim kit can't fit . About the rockers, I would stay with 1.6, but that is my opinion . I assume the 1.7's are roller, if so, then it will be a nice improvement over the regular junks. But always check the clearances first, don't let anyone tell you different, cause all motors are different.

I needed longer push rods when I installed mine.

You get a pushrod length checker and see how long the pushrod needs to be in order to get the right contact patch on the valve tips.

You may have to plug the smog ports in the back if it has any. I had to plug the ones on my E7's. Not sure if the 40's are the same way or not.

Z06killinSBF said:

You may have to plug the smog ports in the back if it has any. I had to plug the ones on my E7's. Not sure if the 40's are the same way or not.

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No smog holes.

I know the "P" heads don't have the Thermactor plumbing, not sure about the regualr iron GT40's.