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4 mill 68 mm cheetah


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First of all the porting is done on the cylenders and not the case. Second if you are talking about a 4 mil cub with 68 bore you do not have to trench the cases, but if you step up to a 7 mil you will. The cubs only need a clean up porting to get rid of casting residue, but you can do a full drag, dune port for more power..................... :beer:

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You can match case porting if you'd like, it is not neccessary...

Simply put the correct gasket on the cases and marker where the gasket hits.

 

I dremeled my cases myself. Just a little bit of grinding... You might get 1 to 2HP extra....MAYBE.

 

No big deal, though...

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