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Refresh my memory - did you try any roller cams in that engine? I am slowly working on a 511 low deck that will have manifolds so this thread has my attention.



I did a bunch of dyno testing with other flat tappet cams. Mostly solid flat tappet but also a hyd flat tappet. A couple of years later I did another stroker motor which was slightly bigger and with better heads. I used a hyd roller in the second motor but it didn't really make a lot more power than the .528 flat tappet.

The FAST guys have spent a lot more time and money on this subject than me. I'm sure that Dwayne could find a cam that would make more power than the .528 these days and it would probably be a roller cam.

Back when I did my testing I worked with a couple of different cam mfgs and they sent me their best designs. So it wasn't like I was just picking cams out of the catalog and testing them. I ran exactly what the engineers told me to run and nothing worked better than the .528 cam.



Very good info. Thank you Andy. I am looking for a low maintenance combination that will idle like a stocker with the A/C on. It sounds like the .528 could be a very good place to save a little coin too. Adding a hydraulic roller adds a significant amount to the budget once you price out lifters, a roller cam that can drive a mechanical fuel pump, etc.



Yes,a hyd roller does add a lot of money. If the budget is tight that is one of the first places to save money. For a street engine you won't see much difference.