I am looking for some information on a Gen V, 454mag Carbureted. Does anybody out there have a dyno sheet for this engine? I would love to see stock dyno numbers; and the dyno numbers with the 525SC cam installed in the same engine. Hopefully everything else will remain constant except the cam and a set of roller rockers and a carb.

Thanks,

Also,
I have Desktop Dyno, does anybody have the flow numbers for the stock 454mag Heads?

I believe the 454/420HP has the same crane cam as the 525SC. With roller rockers and a holley 800 you should be around 420-430HP

razor flat tappet cams are OUT! & for good reasons, we now have mild to wild hyd rollers that can run well with low spring preasure and deliver more performance!

High Performance Chevy magazine has flow test numbers for GM rectangular port heads. The results are on-line at their web page...