505 BB Mopar on the dyno today

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Brian Hafliger

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I thought I'd post this pretty easy combo that put up good numbers today...440 source kit, eddy rpm heads and cam kit, 9.8:1, SV EFI intake, 750 carb and good machine work...not porting or modifying of the heads/intake....535HP and 570tq. Had 560's TQ at 3000rpm!

 
I thought I'd post this pretty easy combo that put up good numbers today...440 source kit, eddy rpm heads and cam kit, 9.8:1, SV EFI intake, 750 carb and good machine work...not porting or modifying of the heads/intake....535HP and 570tq. Had 560's TQ at 3000rpm!


Which 440Source kit did you use? I am looking at the 440.512.5060 with Edelbrock Performer RPM heads (60189) with 88CC to give 9.7 comp ratio for purely a fun street engine.
 
Which 440Source kit did you use? I am looking at the 440.512.5060 with Edelbrock Performer RPM heads (60189) with 88CC to give 9.7 comp ratio for purely a fun street engine.

Customer supplied, I think it was 440.500.5080 and we milled the heads down to 80cc.
 
Brian, did you build it, or just dyno it?
We did the machine work, assembly, and dyno session. Typical machine work, touched up the seats and guides on the heads, set I.H. where we wanted it. Other than that pretty simple!
 
I've got a 440 block at the machine shop waiting for a 440 source kit...
Picked up a big block 727 Divorced Capable for my power wagon...
It'll be a minute before I can get the kit financially...
It's good to hear the tourqe comes by easily with it..
 
The original post seems to indicate it was the Edelbrock Performer RPM cam kit. I looked it up and the specs are 238/246 duration at .050 and 480/495 lift with 110 lobe separation.
 
The original post seems to indicate it was the Edelbrock Performer RPM cam kit. I looked it up and the specs are 238/246 duration at .050 and 480/495 lift with 110 lobe separation.
Correct! We used Hughes 1.6 rockers so a little bit more lift but still very very tame.
 
That's a remarkably mild cam to be making that kind of power and torque. Makes me reconsider a big block build
 
Thanks for posting that build and numbers. Confirmed what I was thinking for my GTX project.
 
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