I had a complete L-35 BBC to start with. I wound up putting the 702 heads on my 460 BBC to bump the compression up. I later realized that I probably should have re-used the 781's that were on it because they have the biggest runners in the factory oval head class. Too late now. The question is that I'm going to put the L-35 back together and probably put it in a 70 Camaro with a TH400. I'm wondering how those heads (the 781's) will work on a smaller 396 bbc. This will have the factory cast dome pistons. Will it work just fine? Is this the best factory oval head for a 396??....or would the 702's work better for some reason. Lastly, What would the compression be with the 781's (118cc) and the factory 396 dome pistons? Thanks!