Chassis Dyno Results-Why Low HP?

[MAV1]

Had my 2000 2500 ISB dyno'ed on a Mustang chassis dyno last week. In three runs, the best HP was 180. 4. The torque was pretty much the same for all three, around 420-430 ft-lbs. My truck is supposed to be 215 and 420. Where is the HP on my truck? The lift pump has been replaced by Dodge and all else seems ok. The truck is stock except for a Banks 4" turbo to tailpipe exhaust. I have an appoinment tomorrow to have the lift pump tested. Any other ideas?

 

[Bob Wagner]

215. 00 X . 8 = 172 20% driveline loss

 

[R.ebel]

Drivetrain loss

Ditto on what Bob Wagner posted. Subtract about 20% of flywheel HP to get rear wheel HP.

 

[MikeR]

Yup, 180-190 is what I ususally see a stock automatic put out. It's not low,you're looking good.



-Mike

 

[carhauler]

I got 192.1 at cummins

and they said that has been the best dyno run for a 2000 model they have seen. I was surprised too until they told me that. I told them I just bought an EZ ,They said to install it and bring it back and thay would check it for free for me ,Great bunch of guys.



Jim

 

[Joseph Donnelly]

Hmmm, rear wheel hp / 0. 8 is the engine hp, huh? OK we don't know just what the losses are through the drivetrain, but I like it:

609/0. 8 = 761 hp. But my poor old Ram still feels Sickly

 

[R.ebel]

HP

Joe,761/359 = 2. 1 horsepower per cubic inch!!! That is truely astonishing

 

[Steve G]

Like the others have said, my stock at Cummins was 178hp.



Steve

 

[Joseph Donnelly]

Yeah, the Powerstrokers were pretty upset at the Dyno Day last March. We Rammers kinda crashed their party. We said Sickly was too weak to climb the rollers and 4 guys pushed him onto the dyno Then we came up with high number for #2 diesel only, by over 100 hp!



Let's see what folks come up with for the Dec 15 meet in Pahrump; 700 anyone? C'mon, Nowel, where have you been? After Bully Dog matched your drug-addicted 643 with their Ram heavily on drugs too, I am sure you are feverishly at work



Lets see some more good numbers on diesel fuel only--diesel engine, ya know. Wouldn't want Don Garlits or John Force to show up on nitromethane and claim the high number