Im buying a car tomorrow that has t-78. Im just curius of what it will make at around 22 psi?? I know these dumb *** ?? get answered all the ******* time in this part of the forum. Im just looking for a ballpark hp. the car make 435@15 psi.

 

I am Guessing, but if the engine is healthy and ported it should be in the range of 480 to 500 rwhp.

 

At 19 I put down 487 rwhp with a very fat afr.

 

nive numbers. what do mean "fat air fuel ratio"??? what did you make at 15 psi?? Im tyring to compare with other cars.

 

Fat= ric. The richer it is, the less power you make, but the less chance of detonation you have too...

 

On what type of dyno?

Just curious as my car has been dynoed at 451 rwhp @7500rpm, 22 psi with a very steady A/F of 11.3:1 on a Mustang dyno and 464 rwhp @7100 rpm with the exact same tuning within a few days on a Clayton dyno (same temperature and atmospheric conditions). By examining the graph from the Clayton and extrapolating its continuation beyond 7100 rpm by factoring in the Mustang dyno graph, I estimate it would have registered over 490 had the car been spun to at least 7500 rpm. That is a discrepency of almost 50 hp from one dyno to the next.

HAve you taken your car to the track? What kind of mph are you seeing at the end of the 1/4?

 

Hey Serge, I'm guessing he dyno'd on a dynojet.
My friend ran his t51 supra at 22psi on a mustang dyno and made 569rwhp. A week later with no adjustments, on a dynojet he made 604rwhp at 22psi in very similar temp, etc.

 

Just looked at my post and it has a typo. It should be 478 (sorry). It was on a dynojet on a very cold day 68f, well cold for So. FL.

 

Seems like a typical scenario. If you are using the dyno as a tuning tool it is important to use the same one consistently to measure changes but if you are looking for bragging rights, Dynojet is the one to use!