Trick flow 240s on milder builds versus Edelbrock RPMs

[email protected] is small for a 451 no matter how you slice it. Not that this is a bad thing.

Now how it acts and performs... well, there is more to that than just duration. I can tell you [email protected] in a 440 when cut on a higher LSA is mild and VERY and happy at low rpms. It will make around 500hp with OOTB RPM heads. The 451 will be even more tolerant of duration. Now 240 cut on a 104LSA in a 440 sounds like a top fuel dragster, ratty idle and wants RPM, build power very quick and falls off just as fast, and will also make around 500hp. Overlap, IC, EC, ramp speeds, all play in as well.

Personally if that 451 was mine I'd have 240's on it with a custom roller cut at [email protected] on a 112+ LSA.

I also don't buy into 4 speeds being more cam friendly. Tuned right with the right convertor this isn't an issue.