1973 455 Super Duty Dyno Results

KenMaisano · #1 03-19-2017, 04:58 AM

Thought i would share some info on a recent Dyno study.
Engine SD 455 .005 over clean up W/ torque plate
increased compression from a calibrated 8.6to1 to 9.0 to1
original camshaft was 226 236 .410 114
new camshaft 221 232 .500 112
heads#16 completely stock
original exhaust manifolds,LS intake, 240 Q jet, 208 Dist.
Full Balance and Blueprint Build.
Torque @ 3800 485
Horse Power @ 5200 415

Ken Maisano
Mascar Classics

**njsteve** · #2 03-19-2017, 10:35 AM

Very nice numbers! Got any video of the dyno run? I'd love to see/hear it.

NorCam · #3 03-19-2017, 12:01 PM

Good swap on the cam. Bet that torque curve was real broad?

**Xplantdad** · #4 03-19-2017, 03:09 PM

Very cool!

**tjs44** · #5 03-19-2017, 06:47 PM

Ken,any reason for not going up a touch on duration also?Those engine seem to really like the 230-236 range along with the added lift?Tom

KenMaisano · #6 03-19-2017, 09:02 PM

Quote:

Originally Posted by tjs44

Ken,any reason for not going up a touch on duration also?Those engine seem to really like the 230-236 range along with the added lift?Tom

I wanted to keep it all stock with a smooth idle. Tightening up the lobe center already added overlap.