1137/1763 6.7

redram04

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Nov 29, 2010
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Just got some numbers from my old 6.7 cummins. Motor was built for nitrous but these runs were fuel only. 1137/1763 on a street tune @ 64psi boost. Tuner didn't have time to change gate springs to turn it up higher but not too shabby. Dyno had a density altitude of 5500ft.
Big thanks to Gecovey Coffman for the UDC tuning and Brad Ponci for the motor and turbo build, great job guys.
Video coming soon!!

FB_IMG_1428603922046.jpg


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nice! what were the specs on the build? What made it "built for nitrous"?
 
Thanks jlibert ,the motor was built much looser up top.

specs are s463/garrett 98mm,carillos, ported head, cam, dual cp3, 200% inj, pretty much a typical street truck :)
 
If you feel like sharing...

what pistons, cam, and who ported the head? Side draft?
 
marine pistons, 188/220 Hamilton cam, zz fab side draft, cant remember if it was ported at zz or sent out as I bought the head used.
 
Thanks Les, I recently saw you put down some big numbers too, good job!
 
marine pistons, 188/220 Hamilton cam, zz fab side draft, cant remember if it was ported at zz or sent out as I bought the head used.

Sounds like all the same parts i have. Do you remember what the ring gap and piston to wall clearances were?
 
thanks, it is going to ennis texas this weekend so maybe some better air will help those numbers a little.
 
I did sell it, just finally got it to Gecovey for some dyno numbers. I put twins on the day before I shipped it out and was happy to see the numbers it put down at elevation. It made 980 at 45psi,I'll see if I can get that video posted here.

I think the owner has plans to spray it but I dunno how the crank is gonna like life with a couple big kits thrown at it.
 
Here is the first run on the rollers having big time primary gate issues making 934.
Coffman Customs - Tim Nix 934hp UDC Dyno pull: [ame="http://www.youtube.com/watch?v=Y1aTdJCvZW4"]http://www.youtube.com/watch?v=Y1aTdJCvZW4[/ame]
 
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