I was very excited to get my car dyno'd. expected 230/330tq or so....but i was dissappointed mainly cuz the dyno experience didnt turn out so well.

my car has hooker shorties, into 3inch catback..but with chambered tube muffler. stock cat converter, gutted air box , tb bypass mod, 170 degree thermo, and 2800 stall with 3.27 rear. 10 degrees advanced base timing.

i dyno'd 3 runs, one with stock AUJL bin with mild changes (only pulling out 3 degrees of timing during knock instead of 15 like stock, and tcc lockups/fan temps) and the other two runs were with ARAP bin with similar changes...but also the TCC forced lockup was moved from 88mph to 105mph.

first run was stock chip, blue line on the chart...EBRAKE was on partially!! i was so mad at that and my rotors are now blue... i guess it lowered my power but the chart shows interesting things

second and third runs took place with other chip...but the motor was hot.. end of last run, the temps were 260.
converter lockup was higher in the rpms at 105mph.

you can CLEARLY see the lock up points and changes in the hp/tq.

the dyno chart started reading the run at like 3900rpms-4000rpms!!! so that is pointless on a TPI car, the run should have ended at 4500 as power dropped DRAMASTICALLY after that.

so overall it was fun, but the numbers dont mean much...they just give me an idea where my peak power is and the air fuel

200whp at 4200rpm unlocked converter...and 261 wtq at 4000rpms!! lol
air fuel is around 12.2-12.5 on 2 runs and one run was in the high 11's...so its a little rich.

so i know my car has alot more than what it shows...check out the graph its crazy

 

whats funny is i been running my car at the track, shifting at 5k rpm since thats where the auto shifts... by that point, i'm already down 25-30hp. by 5500, its down 80hp!! no doubt in my mind that miniram or LT1 or HSR intakes will gain TONS of power up top over TPI. by 5000, you'll be making probly 30hp more maybe even more peak hp than the tpi, so 40-50 overall!!

i'm just really disappointed i couldnt get my converter to lock up... does anyone know how to do that? i couldnt figure it out..somethign about pins on the diagnostic port under the drivers side dash?

 

Yeah,Its cool to do....but dont get down about the numbers. Theres is so many things that screw with the numbers. Engine temp is one of them. And the ebrake for sure.

Ive seen guys with a difference of 50 horsepower run the same et. Different dynos...Its fun for bragging rights but the track is the real deal.

 

Don't worry about those numbers!
Dyno queen? No!

My car dyno'ed 380 lol
I plan to go back now that t56 is in and see/prove the difference between loose converter readings and Direct drive..

Stop by again when you want, we can hook you up a switch for converter either off ecm, trans harness or dignostic port.. All three will work, besides you will love having forced lock on demand..

I plan to go to track wed. Car actually trapped 127 with t56
however the driver needed much work. lol.

 

Your times at the track indicate more power than shown on the dyno. If you have ran a high of 100+ mph at the track you are putting down more power than shown on the dyno. Yes you will pick up some power by leaning it out a little.

 

just look at the place where the converter locked up...i have a big hp and tq jump at those points...but way after the peak power was produced... first chip was about 100-150rpm past peak and showed near 15hp increase (even with ebrake on) and the other chips shown a 7 or so hp increase once locked up around 4850rpm...well well after peak was made.

i have a feeling that if it was locked up earlier, it would have shown a really nice increase. i still think it has 230whp i just wish i could have dyno'd the true torque to impress some ppl there.... the torque would be on par with stock to mild LS1's


definately that would be pretty cool to try. i happy with it as it is now, the car feels good just needs more power up top end. i cant wait to track it to really see what it will do now after i took it all apart. lol and after that i would love tryin to lean it out some...but maybe i shouldnt worry about that now, as i hope to have the lt1 intake on it this winter and it will need that extra fuel. but i guess i could just keep one of the stock bins and make a leaner chip just to try it.

damn thats impressive!! glad to hear you got it up and running! just becareful on that 10 bolt....

 

Yikes, don't you just hate where dyno operators start their dyno pulls. Next time I am going to insist that they start at around 55 mph with mine and roll smoothly on it. Maybe even put a diesel governor in the transmission for the dyno pull (easy to get to on mine).

I always thought the TPI was supposed to have more torque than the TBI engines. Granted you do have 20 HP on mine, but mine was dyno'd on a 107* day here. The locked (high ambient heat) 7bladed 20" clutch fan probably pulled a good 10-12 RWHP out of mine. Damn thing sound like an airplane propeller at full power.

Stock 350 HD Shortblock (8.5:1 compression)
810 HD truck Swirl ports
Stock Peanut 305 Roller cam with 1.6:1 roller rockers
1.5" x 3" flowtech cheapy headers
2.5-3" Y-pipe, Single 3" cat, 3" single in, Dual 2 1/2" out turbo muffler, dual 2 1/2" pipes
Edelbrock 3704 Intake
1" open center TBI spacer
Stock sized TBI unit with ultimate TBI mods
RBob's EBL with custom tuning
61 lb/hr injectors @ 17 PSI
Yank 2,800



4,500 was 130 on S rated tires! I have a feeling he was upward of 145 MPH based on the RPM reading of 4,750.

 

they do... you maybe have 261tq but yours is at 3500 while mine is at 4000. mines already been dropping off from that point as yours is probly as well. i know it has atleast 300. i'd be curious as to your final numbers tho

but tbi with swirl port heads usually make more torque at even lower rpms than TPI from what i seen...like from 1000-2500rpms


i told the guy that the trans wont downshift at 55-60mph...which is near 3000rpms and to start around that point. i guess he didnt start it till he was sure it wasnt gonna down shift. oh well

 

He started mine around 100 MPH and ended at 145 if my math is right.

He did not hit WOT until around 3,800 rpm. Notice the a/f ratio is above 13:1 before that. It dropped to 12.7:1 when he finally got it hammered.

On a different Mustang dyno with a diesel governor in it, it hit 320 RWTQ @ 2,200 rpm.

 

oh wow, thats pretty stout


my car in third gear only goes to about 105 by 4500rpms

calculations at 5500 and my tires show 128mph

 

anyone have any idea what this motor might be making if i had the converter locked up earlier? would 230whp be out of the question?