Get 78 302 to 9.5:1????

SPEED FREAK said:

I would recomend a roller engine with at least e7 heads. To change over you will need the block, cam, lifters, pushrods, crank rods and pistons from the late block. The rest of your accesories should bolt on sans problem. The newer engines are more efficient and tend to have better power curves. I recomend them.

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dastang2 said:

yes you can and it is easy. you have d80e heads and they are not even a good boat ancor. chunk them, they got about 68 cc chambers and huge exhaust bumps. i wouldn't even worry about that roller conversion. if you get a good flat tappet cam, you can overcome the power of that roller conversion. but if you wanna do it, all you need to do is get the dogbones,spider bar,lifters and the 2 bolts that hold the spider bar down and drill and tap 2 holes in the lifter valley to bolt the spider down. now you have a choice here. either you use a large base circle cam which is what stock is and put lifter bore extensions on the block or you get a small base circle cam and do nothing with the lifter bores. i would do the small base circle thing. you also need the correct pushrods and the steel dizzy gear from an HO motor also. look for some e7 heads, they flow better and i think they have smaller chambers. i have a set but the need to be redone.

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