cam question
According to edelbrock the victors flow roughly 20-30 cfm more from 400 to 600 lift than the performers and close to the trick flow. Why is Andys 470 with 271 @ 50 giving up the ghost early with trick flows?I think i am seeing pattern but cant understand.A 426mw
stocker w/stock(nhra legal cheated up) holds rpm longer as Andy said.
Many cyl head porters dont care about low lift flow in fact they try to lower it
Please lets continue this discussion for the sake of knowledge.
Thanks Joe
I better like the question, "Why is Andy's 470 making 675HP (and yes, I think Andy can make more) while your 522 is making 636 HP?" Andy has given you one reason.......the intake manifold.
Here is another reason, cylinder head airflows. I don't care what Edelbrock claims, this is how they compare........all on the same flowbench.......all OOTB.
Lift... EDL RPM #1......#2.....Victor #1.....#2......#3......TrickFlow
.100.............73........74..............60.....68......68.........70
.200............148......149............120....141....129........150
.300............209......211............181....204....190........221
.400............254......253............237....246....243........276
.500............276......280............276....277....290........322
.600............287......292............314....305....315........336
.700............291......292............314....324....313........333
Heck, we have a single 4bbl 451 with our ported Edelbrock RPM heads (349cfm) that makes 679 HP @ 6,000rpm and 771 HP @ 7,000rpm.
The 522 is running out of air, not camshaft duration.
What kind of exhaust system are you using? Not cast iron Max Wedge manifolds?