road car cam for my 318

str12-340 said
I'm curious as to why that would make a difference - the 42RH also has lower first and second gears than say a 904 or 727

2.74 vs 3.09

I take more issue with a final 2.03:1 in OD that's a pretty high ratio.

Your engine only needs to make like say 40-50 hp on the highway question is at what rpm (among other things) can it be made most effectively at.