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Author Topic:   New Dyno numbers
ZEATER
Gearhead

Posts: 132
From: Mount Pleasant,IA,USA
Registered: Aug 2001

posted 05-08-2003 11:34 AM     Click Here to See the Profile for ZEATER   Click Here to Email ZEATER     Edit/Delete Message   Reply w/Quote
I went to the dyno yesterday afte some changes to my 428. Power increased from 373 to 412. Torque stayed about the same at 410 but now the torque curve stays above 400 for about 500 more rpm.

The larger exhaust has moved the peak torque curve from 3500 to 4500 before to 3700 to 5300. Horsepower was lower slightly until 4000 rpm where it gradually grew to 40 more at 6300.

I ran 12.19 @ 111 with first set up. I think moving the torque curve up an increasing hp should throw me in the 11's.

The dyno operator suggested going back to
2 1/2 exhaust. He thought it would increase torque to about 450 and drop the curve back. Since I never get below 4000 rpm when running I'm not sure I agree.

I think I need to run as is and see where we ended up.

Any opinions would be great.

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steve'66
Gearhead

Posts: 7226
From: Sonoma,CA,USA
Registered: Mar 2000

posted 05-08-2003 05:03 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
I'd run it at the track and expect it to run high 11's too.

SteveW

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