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Re: Chassis dyno... [Re: JAKE68] #1098543
10/23/11 01:37 PM 10/23/11 01:37 PM
Joined: Aug 2005
Posts: 759
Southington Ct.
T
turbobitt Offline
super stock
turbobitt  Offline
super stock
T

Joined: Aug 2005
Posts: 759
Southington Ct.
Quote:

We have a chassis dyno that we use to tune, On motors that we have engine dynoed and then chassis dynoed depending on the converter have been from 21-28% loss difference. With a stick it has been 18-20% loss This is not something i live by but just reference. The chassis dyno should only be for tuning and not see what THE NUMBER IS. I dont care what the number is I tune to see if there is any more. We also determine if converter is right for the outcome.


This sounds like a calibration difference between dyno's. 28% loss - ask yourself where is it going ?? I would love to believe that my 928 RWHP dyno pull yesterday could be actually that much higher at the crank.

Allan G.

1970 Challenger w/572 Hemi street car and my pride and joy. 1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno. 1976 Cee Bee Avenger Jet Boat - 460 Ford powered.
Re: Chassis dyno... [Re: turbobitt] #1098544
10/23/11 03:52 PM 10/23/11 03:52 PM
Joined: Oct 2004
Posts: 1,946
Connecticut
5126brl No more Offline
top fuel
5126brl No more  Offline
top fuel

Joined: Oct 2004
Posts: 1,946
Connecticut
I dynoed the engine on a DTS at Larrys in stonington and it made 591hp. Took car to a chassis dyno in wallingford 2 years later and made 482 hp at the wheels ,. this is a 4-speed so I lost 109 hp. in the drive train. whats that? about 18%?
Re: Chassis dyno... [Re: 5126brl No more] #1098545
10/23/11 04:50 PM 10/23/11 04:50 PM
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
G
goldmember Offline
master
goldmember  Offline
master
G

Joined: Feb 2004
Posts: 4,501
Gainesville,FL
Yep.
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