dissapointing dyno results...
#1
dissapointing dyno results...
Car was just dyno tuned. Its a fully forged 383 ,home ported heads/intake, gm847 cam, 1.6rr with upgraded comp springs and trick flow 1 piece pushrods, lpe cai , built 4l60e and a pic 3600 stall. Stock auto gears in a stock 9104 bolt.
Last year before the rebuild, the car put down 380 hp..... it now puts down 320 peak. The only thing besides the motor refresh that was changed was 17" wheels from the 18's I had, and going from a stock converter to the ptc. Does a converter have that much effect on dyno hp????
Last year before the rebuild, the car put down 380 hp..... it now puts down 320 peak. The only thing besides the motor refresh that was changed was 17" wheels from the 18's I had, and going from a stock converter to the ptc. Does a converter have that much effect on dyno hp????
#4
TECH Fanatic
iTrader: (10)
1st, it's a dyno! Don't get too upset. A dyno is nothing more than a tuning tool. They are all different. Even the same ones may vary after a year if the owner doesn't keep up on calibrations. And that can be expensive.
2nd. A stall can be very detrimental to #'s based on lock, STR etc.
3rd. It could also be in the tune to engine and trans after the upgrades. The only truth to mods is in track times.
Ask yourself, Does it feel more powerful?" If it does, then it does.
2nd. A stall can be very detrimental to #'s based on lock, STR etc.
3rd. It could also be in the tune to engine and trans after the upgrades. The only truth to mods is in track times.
Ask yourself, Does it feel more powerful?" If it does, then it does.
#5
10 Second Club
iTrader: (8)
1st, it's a dyno! Don't get too upset. A dyno is nothing more than a tuning tool. They are all different. Even the same ones may vary after a year if the owner doesn't keep up on calibrations. And that can be expensive.
2nd. A stall can be very detrimental to #'s based on lock, STR etc.
3rd. It could also be in the tune to engine and trans after the upgrades. The only truth to mods is in track times.
Ask yourself, Does it feel more powerful?" If it does, then it does.
2nd. A stall can be very detrimental to #'s based on lock, STR etc.
3rd. It could also be in the tune to engine and trans after the upgrades. The only truth to mods is in track times.
Ask yourself, Does it feel more powerful?" If it does, then it does.
Wifes car only lays down 365 at the tire....but runns 11s
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#9
You didn't mention whether or not you had your tune changed in the pcm after the new setup. If you didn't retune, maybe that's the problem also what headers and exhaust are you running?
#14
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Car was just dyno tuned. Its a fully forged 383 ,home ported heads/intake, gm847 cam, 1.6rr with upgraded comp springs and trick flow 1 piece pushrods, lpe cai , built 4l60e and a pic 3600 stall. Stock auto gears in a stock 9104 bolt.
Last year before the rebuild, the car put down 380 hp..... it now puts down 320 peak. The only thing besides the motor refresh that was changed was 17" wheels from the 18's I had, and going from a stock converter to the ptc. Does a converter have that much effect on dyno hp????
Last year before the rebuild, the car put down 380 hp..... it now puts down 320 peak. The only thing besides the motor refresh that was changed was 17" wheels from the 18's I had, and going from a stock converter to the ptc. Does a converter have that much effect on dyno hp????
#19
TECH Fanatic
iTrader: (1)
^THIS^
Since you've now said it was a differennt dyno, no need to be concerned at all. @ssed-up dyno results are not uncommon. Some of the operators don't have enough understanding to even follow the operating manual
Calculating hp from your trap speed and race weight will be far more accurate than any dyno.
Since you've now said it was a differennt dyno, no need to be concerned at all. @ssed-up dyno results are not uncommon. Some of the operators don't have enough understanding to even follow the operating manual
Calculating hp from your trap speed and race weight will be far more accurate than any dyno.