470 going to the dyno - HP/TQ estimates

470 going to the dyno - HP/TQ estimates

Update...........

1967 Cuda said
My 470 is heading to the dyno in the next few weeks and wanted to see estimates on numbers. Here is the details of the build:

400 low deck with eagle 3.91 crank and 6.760 Rods - balanced rotating assembly
Ross Pistons - 11.2 Compression Ratio
Indy SR Heads ported by Indy to flow 351 CFM @ .606 Intake and 233 CFM @ .606 Exhaust
Holley Street Dominator Intake that was extensively worked on
Cam is a Trickflow Hydraulic Roller - 296/ 300 Advertised duration and .600 lift

Dyno runs will be with a MSD distributor, Dyno supplied carb (I think he said a 950) and 2" primary tube dyno headers.

What is your guess on numbers?

1967 Cuda said
Numbers are in and I'm extremely happy! We only made two pulls (4,500 and 5,500) as my goal was 600 HP/ 600 TQ. The run to 5,500 saw max TQ 689 @ 4,100 and max HP 658 @ 5,300 on 93 octane. (Hell Yeah!)

1967 Cuda said
TQ is over 600 from 3,000 all the way through 5,500. The best part is that the motor would idle really smooth at a little under 800 rpm. No leaks, valve train issues, or oil pressure issues. I took a few videos that I will look to post in the next day or so, but below are a few pictures. The info on the dyno set up was as follows: Holley 950 HP Dyno Carb, 2 1/8" fender well dyno headers into 3.5 collectors.