451 on the dyno

I was asked to give some information about the 451/400 we used as a dyno mule to test out our 901 SuperFlow dyno.

This was a 400 based stroker with a 440 crank turned down to 400 mains.

Scat 6.76" rods
Forged Ross Flat tops
Ported 906 heads
9.5:1 compression
M1 single plane
850 Mighty Demon
Erson solid roller 254/259 @ .050 .400" lobe lift
Harland Sharp rockers

RPM................TQ...............HP

3000..............353..............202
3500..............442..............294
4000..............498..............379
4500..............521..............446
5000..............517..............493
5500..............518..............542
6000..............502..............573
6300..............478..............575

Just some thing we threw together, with parts laying around, to test the dyno to about 600 HP. We needed some more compression or a shorter duration cam with more lift.

Next is the 528 all aluminum hemi