New motor dynoed.

[71Dragtruck]

Well got my new motor home, it's a 489 BBC with these specs.

4-bolt mains, studded
Eagle crank
TCI Rattler
Eagle H-beam rods
SRP forged pistons
Comp Cams 308R solid roller
Comp lifters
Comp High Tech push rods
Edelbrock Rec Port RPM heads
Comp Pro Mag rockers
Comp stud girdle
Edelbrock Vic jr. intake
Mighty Demon 750
Hooker Super Comp 2" headers
ARP top to bottom
Crane dist, and High 6R, with timing retard
NOS Cheater system

We made some dyno pulls and ended up with 636.5hp at 6250rpm, and 617.6flbs. at 4750rpm. It avg. 585.12flb and 586.92hp from 4250-6500rpm. This was done with a 750 carb, heads and intake unported NO Nitrous all motor. I'm going to run it with this combo, thinking it will run 11's on motor shifting at 6500. With a 850 carb and a small amount of porting to the heads and intake, thinking that it would make 670hp easy.

This was made on a stingy dyno, they like it that way so that their motors will always make what they claim, Ron the dyno guy with 25 years in the buisness, is old school and likes to play it safe, could have made 650 with more timing, leaner, and few more revs.

would have been nice to try a 850, but a guy borrowed it and never made it back in time for my session, oh well not sure if $600 would have been worth 10hp to upgrade my carb, I allways have a 250 shot of nitrous to fall back on.

I'll get some pics up soon, I have a crappy dyno vid from my camera if someone wants to host it.