Re: Stroker Combos
I don't think you can say achieving 540-580HP is easy. Heads and cam have to be optimum, that's the key. Mine aren't, so I don't make that sort of HP with my stroker.
Agree that the CHI218 heads would be much better suited. Also when using these heads the 'normal' compression ratio standards don't apply - so upto 11.5:1 is OK even for PULP.
Personally I don't like 408 strokers for a whole stack of reasons. Sure you get an easy 50HP extra but that's about the only benefit. Costs go up a lot, you're in another league with the block prep needed and longivity is still uncertain with them. Talk to guys that have done them with clevo blocks.
Not to say a 408 can't be done properly though, but I wouldn't use a standard cast clevo block.