6.2/6.5 Dyno Data

[6.5 Detroit Diesel]

I looked for, but couldn't find the post that had been set up for posting dyno
runs and numbers.
A local shop with a mustang dyno was offering tests for $50 so I pulled in. Took a little to get set up. The first pull, the tech just opened the door, didn't turn on the fans. And the room got rather black. After that he turned on the fans.
Did 3 pulls, the 3rd one, the optical sensor stopped reading above 3,300 rpm. So only got the first two verified.
I am running the 36" Mudders again, and they didn't have an entry for a 6.5 in their computer, so the tech matched it up as close as he could.
First run pulled 163 Hp, 361 tq.
Changed a few things and did second run.
Netted 191 HP at 3,000 rpm and 376 tq at 2,100 rpm.
I felt these were decent numbers for the truck, so far.
Also am going back to pick up an almost new Cummins intercooler for $100.

[More Power]

I looked for, but couldn't find the post that had been set up for posting dyno
runs and numbers.
A local shop with a mustang dyno was offering tests for $50 so I pulled in. Took a little to get set up. The first pull, the tech just opened the door, didn't turn on the fans. And the room got rather black. After that he turned on the fans.
Did 3 pulls, the 3rd one, the optical sensor stopped reading above 3,300 rpm. So only got the first two verified.
I am running the 36" Mudders again, and they didn't have an entry for a 6.5 in their computer, so the tech matched it up as close as he could.
First run pulled 163 Hp, 361 tq.
Changed a few things and did second run.
Netted 191 HP at 3,000 rpm and 376 tq at 2,100 rpm.
I felt these were decent numbers for the truck, so far.
Also am going back to pick up an almost new Cummins intercooler for $100.

Those sound like good numbers for the 6.5. Three pulls is a good number. The engine warms up for each successive pull, and the numbers can increase a little with each one - to a point.

Thanks for posting.

Jim

[6.5 Detroit Diesel]

If you want to sure. That's probably where it belongs anyways.

[DaveBr]

If a stock 6.5 dyno's around 150 - 160 h.p. shouldn't a truck that has high boost, upgraded exhaust, marine injectors and IP turned up put out more than 31 - 41 more HP? These numbers sound low to me. I was thinking more along the line of 225 Hp / 440 ft lb tq. Maybe the old girl is getting a little tired. 6.5 DD when I get out your way I'll have to race you.

[6.5 Detroit Diesel]

Ya, I think it should have made more power to. But, I am starting to doubt whether I actually have a higher pop injector in the truck.
That, and the tech said the 36's soak up power nicely. And judging by seat of the pants feeling when I switched to them, he's right. I picked up a cummins intercooler while i was down there, so that is going to be getting hooked up soon.

[DaveBr]

If you come across another cummings intercooler please let me know. I was going for the DYI but I like the placement of the Cummings cooler behind the grill better. Those 36's really must turn your gear ratio's up.

[6.5 Detroit Diesel]

Dave PM me. They have one more sitting at the shop. I picked mine up for $112 with tax
As for the tires, I took them off this morning. What a difference in power. I don't even want to think what running them with something lower than 4.10's would be like.

[ronniejoe]

If a stock 6.5 dyno's around 150 - 160 h.p. shouldn't a truck that has high boost, upgraded exhaust, marine injectors and IP turned up put out more than 31 - 41 more HP? These numbers sound low to me. I was thinking more along the line of 225 Hp / 440 ft lb tq. Maybe the old girl is getting a little tired. 6.5 DD when I get out your way I'll have to race you.

It takes a lot of work to get to those numbers, which is where I was in 2004 with my truck. See the dyno data here. Plus, the 6.5 doesn't last very long there without doing work inside. Cracked piston and cracked main web followed.

I don't have new numbers yet, but the Pull-Off performance suggests that I am significantly higher now. With durability, too.

[6.5 Detroit Diesel]

ronniejoe, any idea of when you are going to be doing some pulls with your 6.5?

[ronniejoe]

Hopefully, maybe, this summer.