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Re: surprising performance increase [Re: 727specialist] #3047649
06/03/22 02:19 PM
06/03/22 02:19 PM
Joined: Jan 2003
Posts: 16,923
NC
440Jim Offline
I Live Here
440Jim  Offline
I Live Here

Joined: Jan 2003
Posts: 16,923
NC
Originally Posted by 727specialist
You are welcome 1savoyracer.
Griner did allot of testing to get the best shift timing and to reduce overlap. I have seen this in the past. Keith

This makes sense. The shift timing with the Tranzact valve body must have needed tweaking. Restrictor here, band adjustment there, clutch drum springs, etc.


1993 Daytona, 5.50 at 130mph (1/8) 1.19 sixty ft (PG). Link to 572 B1 - Part 1
Re: surprising performance increase [Re: B3422W5] #3048234
06/06/22 10:19 AM
06/06/22 10:19 AM
Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
an8sec70cuda Offline
I Live Here
an8sec70cuda  Offline
I Live Here

Joined: Jan 2003
Posts: 13,354
Marion, South Carolina [><]
Originally Posted by B3422W5
Curious if footbraking a trans with a brake would make the car slower than with a foot brake valve body
Several years ago I swapped out a 727 with T/A reverse manual valve body, swapped in a 904 with a brake valve body( A&A) which I have always footbraked, car actually slowed down 7 or 8 instead of picking up a tenth or so I expected. I don’t think the convertor is off, in fact I feel it’s more “ right” than the one that was in it when I bought the car.


I've seen the same 60 foots from my car w/ two different 727s...one w/ a brake and one without. Both were Turbo Action valvebodies. twocents


CHIP
'70 hemicuda, 575" Hemi, 727, Dana 60
'69 road runner, 440-6, 18 spline 4 speed, Dana 60
'71 Demon, 340, low gear 904, 8.75
'73 Chrysler New Yorker, 440, 727, 8.75
'90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt
'06 GMC 2500HD LBZ Duramax
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