I'm trying to figure out what kind of HP my new motor is putting out. Will be firing it up for the first time this weekend. Should have had it Dynoed, but the funds started to run short. Maybe some of you motor guru's would have an idea. It is as follows:

454 Mag Gen iv
.030 over Keith Black pistons 9:3-1 Comp.
Comp Cam XM270 226 in 236 ex @ 112 .544in .547 ex lift
Heads are Rect. port that seem to be pretty worked (they have the name "Schrivner" punched in them - an engine builder in LI).
Crane Gold Roller Rockers
Merlin Dual plain intake
reworked 850 Holley
CMI exhaust

Any ideas what this combo will put out? I was thinking maybe mid - 400's.

Thanks,
Scott

Run the combo through DeskTop Dyno.....its not very expensive or ask Crazyhorse to run it through for you ....sounds like about the same combo that SuperV and I are running but we have Merlin oval port heads, SuperV's motor made 505 hp at 5400 rpm on the dyno at Tom Earharts and the desktop was real close...

Thanks Dyno,
Maybe I'll look into getting a "desk top dyno". Seems like something interesting to tinker with.

Scott

I think you are talking between 450-500hp's