Well, here are the Dyno results on my GT. Kevin and couple of other people had indicated some interest in this.
First some info on the motor/Car and the Dyno shop.
Ford Motor Sports 345HP 302 crate motor from their catalog, Performer RPM Intake, Holley 650 DP, MSD ignition, GTD headers, Renault UN1, P335 X 35 X 17 tires.
The people at the shop were great. The Dyno used is a Dynamics Dynamometer. I was told from the begining 2 things; First, Dynamics test results are always 15% lower than Dynojet Dynamometers /ubbthreads/images/graemlins/shocked.gif and Second, the FMS crate motors are notorious for being under powered, even their big blocks /ubbthreads/images/graemlins/blush.gif /ubbthreads/images/graemlins/blush.gif
The car was straped in, 3 pulls were made and the best one is as follows:
221.3HP at 5600 RPM (Dynamics), 254.9HP (for Dynajet)
250 flb at 3900 RPM (Dynamics), 287.5 flb (for Dynajet)
I was also informed that an older Diablo and a Modena had previously been run on the same dyno with 330HP and 300HP respectively!
After the test I sat down with one of the guys talked for 45 minutes about how under powered FMS crate motors are. He indicated that surprisingly the Chevy crate motors did better (Sacrilege). He also mentioned that a stock Ford lightining truck had posted great results while a big Ford 514 incher had been disappointing /ubbthreads/images/graemlins/confused.gif
I think the bottom line in all this, IMHO is that Flywheel horsepower can really turn out be useless. The bottom line numbers are what is happening at wheel of each ride.
I don't know how many people on this forum have actually put their cars on chassis dyno (Roy Smart and Rick Mertz are the ones I know, I think)?
Finding out the horsepower at the wheel is kinda like having a test done for Alzheimers, do you really want to know? /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/shocked.gif Can the ego take it?!
The car feels fast and moves like the devil, but I can't help thinking how it would have been If FMS wasn't full of SHIT as it often is /ubbthreads/images/graemlins/smirk.gif
I believe the way to go is, tell the outfit you are buying the motor from, the motor will be Dynoed once installed in the car. And, if the numbers are grossly off, IT WILL BE SENT BACK COD /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif
First some info on the motor/Car and the Dyno shop.
Ford Motor Sports 345HP 302 crate motor from their catalog, Performer RPM Intake, Holley 650 DP, MSD ignition, GTD headers, Renault UN1, P335 X 35 X 17 tires.
The people at the shop were great. The Dyno used is a Dynamics Dynamometer. I was told from the begining 2 things; First, Dynamics test results are always 15% lower than Dynojet Dynamometers /ubbthreads/images/graemlins/shocked.gif and Second, the FMS crate motors are notorious for being under powered, even their big blocks /ubbthreads/images/graemlins/blush.gif /ubbthreads/images/graemlins/blush.gif
The car was straped in, 3 pulls were made and the best one is as follows:
221.3HP at 5600 RPM (Dynamics), 254.9HP (for Dynajet)
250 flb at 3900 RPM (Dynamics), 287.5 flb (for Dynajet)
I was also informed that an older Diablo and a Modena had previously been run on the same dyno with 330HP and 300HP respectively!
After the test I sat down with one of the guys talked for 45 minutes about how under powered FMS crate motors are. He indicated that surprisingly the Chevy crate motors did better (Sacrilege). He also mentioned that a stock Ford lightining truck had posted great results while a big Ford 514 incher had been disappointing /ubbthreads/images/graemlins/confused.gif
I think the bottom line in all this, IMHO is that Flywheel horsepower can really turn out be useless. The bottom line numbers are what is happening at wheel of each ride.
I don't know how many people on this forum have actually put their cars on chassis dyno (Roy Smart and Rick Mertz are the ones I know, I think)?
Finding out the horsepower at the wheel is kinda like having a test done for Alzheimers, do you really want to know? /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/shocked.gif Can the ego take it?!
The car feels fast and moves like the devil, but I can't help thinking how it would have been If FMS wasn't full of SHIT as it often is /ubbthreads/images/graemlins/smirk.gif
I believe the way to go is, tell the outfit you are buying the motor from, the motor will be Dynoed once installed in the car. And, if the numbers are grossly off, IT WILL BE SENT BACK COD /ubbthreads/images/graemlins/grin.gif /ubbthreads/images/graemlins/grin.gif