Mopar Cam- how many more degrees @.006 to equal at .200?
Andy tested 4 ratios on one combo as I recall.
1.5, 1.6, 1.65, 1.7.
Essentially repeated the same power with all the rockers.
I can’t recall if it was that exact motor combo or not, but he also did a cam swap from one pretty fast cam to an even faster cam.
They were rollers.
The two cams were very close in duration, had very similar split, and the same lsa.
The faster cam made slightly less power.
(My understanding is that the faster cam was supposed to be an “upgrade” over the previous cam. But you never really know how that stuff is gonna pan out until you test it).
I could easily orchestrate a pair of tests where the results would contradict each other.
One test would show how much more power the high ratio rockers make, and another to show they lose power.
When “painting with broad stokes”....... claiming this or that is what’s “better”....... the answer is usually......”it depends”.
One of my buddies that races a 535” Pontiac with aftermarket heads had a cam that made pretty good power, but was a little rough on valve springs/rockers/lifters.
I told him...... just change the cam to something smoother and all those problems will just go away.
It might lose 15-20hp. It’s a bracket car...... do you need that last 15-20hp?
So, he finally got tired of changing parts and had me get him a different cam.
I basically duplicated the events and lift of the previous cam, only used lobes from some families that I knew from experience were easier on parts.
Dynoed motor with new cam....... only down maybe 5hp(on an 800hp motor).
Car runs the same....... parts last way longer.
The fast cam was worth next to nothing in his combo........ but it was def harder on parts.