sandstalker Posted February 16, 2012 Report Share Posted February 16, 2012 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 Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted February 16, 2012 Report Share Posted February 16, 2012 head stud pattern is different than a cub Quote Link to comment Share on other sites More sharing options...
Dicklez Posted February 16, 2012 Report Share Posted February 16, 2012 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. Quote Link to comment Share on other sites More sharing options...
lms1977 Posted February 16, 2012 Report Share Posted February 16, 2012 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. Quote Link to comment Share on other sites More sharing options...
Dicklez Posted February 16, 2012 Report Share Posted February 16, 2012 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. Quote Link to comment Share on other sites More sharing options...
guns4children Posted March 3, 2012 Report Share Posted March 3, 2012 Your thinking of my 4dm motor. Quote Link to comment Share on other sites More sharing options...
camatv Posted March 3, 2012 Report Share Posted March 3, 2012 or cheetah.. Quote Link to comment Share on other sites More sharing options...
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