62T case porting

[BlwnBrd]

I Did a search and never really found what I was looking for. What kinda gain is to be expected from properly ported 62T cases?? I know every mod combo is diff. and the ben. from the ported cases will very with the mods done (and amount of case porting) but as an example, on a 701 with mods listed below is there that much of a power gain?? Say you have 2 of the exact same combos as below with the exception of Ported cases on one, will you notice a BIG diff?? -Thanks-

Freestyle ported 701 61x cyl
185ish psi
B pipe
dual 44 or 46mm carbs & after M. reed setup
prop, msd, etc.........

 

[SN760]

You will not notice a BIG difference. There is some gain to be made with case porting but with your setup it won't be much. The critical area you want to look at is the matchup between the cyl. and cases. Make sure the transfer passages in the cyl. line up with the cases--no lip or or overlap betweel the two. Also make sure that the base gasket don't hang out into the transfer port area where they meet the cases, if it does trim to fit.