408 Magnum Stroker Build...cam selection

I have read as much as I could about the 274, but it's a little inconclusive because lots of people are throwing it into 300-350 CUI engines. I would think a 408 would treat it different.

I will be ordering new lifters with the XE274 (or whatever I decide). Going to stay with hydraulic roller lifters--the whole reason for going to the magnum. The cams I am told to stick with are the hydraulic roller lifter retrofit XE cams due to builders experience. Going to confirm with Comp that they have the long snout because I want to run the mechanical fuel pump.

I already got 1.6 adjustable rockers, so that's locked in. We plan to reuse pushrods and I think we are doing what you're saying there.

Compression will be mid 9s probably. Exact number we'll know during assembly.

Sadly, I don't have my flow numbers for the heads.

Regarding the manifolds, I wouldn't treat them as I am going to run them forever, but I do want to run them for a several years.

Do you still think the XE274 will be too big for factory converter? I am pretty sure mine is the 10 3/4 performance one.