Thinking of building a 4mill supercub..got questions!?

[sandstalker]

I have a 421 cub motor now on alcohol and I'm not sure if my cool head will work on the supercub? Will it or not and if it won't what do I need?

 

I'm thinking I can get 10 mill cub power out of a 4 mill supercub and not have to spend extra money on a 10 mill crank. 115-120 hp 4 mill will put a nice smile on my face

[n2otoofast4u]

head stud pattern is different than a cub

[Dicklez]

I have a 421 cub motor now on alcohol and I'm not sure if my cool head will work on the supercub? Will it or not and if it won't what do I need?

 

I'm thinking I can get 10 mill cub power out of a 4 mill supercub and not have to spend extra money on a 10 mill crank. 115-120 hp 4 mill will put a nice smile on my face

 

On the other hand, you gonna need a head and domes like green said, plus reeds and intake. I'd rather have the 10mill cub but thats only my opinion.

[lms1977]

the reeds and intakes are the same as the cub but the head is different. the pistons are way more exspensive, either way you have to do case work either trench for the 10mil or bore for the super cub.

[Dicklez]

the reeds and intakes are the same as the cub but the head is different. the pistons are way more exspensive, either way you have to do case work either trench for the 10mil or bore for the super cub.

 

 

Whoops. Giiving wrong info. For some reason i thought they used a yz or cr style.

[guns4children]

Your thinking of my 4dm motor.

[camatv]

or cheetah..