ZF vs. T56
07-15-2002, 01:09 PM
#1
Racer
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ZF vs. T56
Why did GM put a ZF in the Corvette & a T56 in the f body cars? Seems like the T56 is cheaper & easier to work on. Also, the Mustangs that have the T56 have a 5th = .8 & 6th = .63 which seems like much beteer gearing than the .75 & .50 for 5th & 6th that the ZF has.
07-15-2002, 01:12 PM
#2
Race Director
Re: ZF vs. T56 (Polar LT4)
I thought part of it was to have a trans that would hold up to the LT5.. the only main difference for the LT5 trans and the L98/LT1 was the input shaft length (as far as the trans goes)
07-15-2002, 01:13 PM
#3
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Re: ZF vs. T56 (Polar LT4)
I dont think the T56 was available when GM signed the contracts to get the ZF6. T56's are in C5s.
07-15-2002, 06:25 PM
#5
Melting Slicks
Re: ZF vs. T56 (vader86)
I dont think the T56 was available when GM signed the contracts to get the ZF6. T56's are in C5s.
07-15-2002, 06:36 PM
#6
Team Owner
Re: ZF vs. T56 (JasonL)
the ZF6 was also a co-development between GM and ZF... a modification of the one used by BMW in their 850.
The ZF is a much stronger tranny than the T56... much stronger.
FWIW, ZF makes some of the best gear drive systems on the planet. period.
The ZF is a much stronger tranny than the T56... much stronger.
FWIW, ZF makes some of the best gear drive systems on the planet. period.
07-15-2002, 07:26 PM
#7
Team Owner
Re: ZF vs. T56 (bogus)
The ZF was available first. I disagree on the ZF being stronger having owned both the other car was a 94 Z28. The C5 T56 is put under more stress with the torque tube and rear mounting. However the F-body and Viper T56s are very tough. If it wasn't such a PITA swap I would drop a T56 in my car before rebuild a ZF.
07-15-2002, 09:49 PM
#8
Team Owner
Re: ZF vs. T56 (93Polo)
is it possible to put in a T56???? whats involved?
07-15-2002, 10:04 PM
#9
Team Owner
Re: ZF vs. T56 (vetteman9368)
is it possible to put in a T56???? whats involved?
07-16-2002, 12:18 AM
#10
Drifting
Re: ZF vs. T56 (bogus)
Stronger the ZF may be, but for most people that will only translate into ob$cene repair bills. You haven't lived the Corvette experience fully until you have had a ZF rebuilt. I should know, between what I have paid and what was covered under warranty mine has amassed ~$7k in bills.
07-16-2002, 12:25 AM
#11
Team Owner
Re: ZF vs. T56 (The Green Rocket)
Yes Zf rebuiilds are crazy a cheap one is $3,500, and a T56 from a f-body can be rebuilt for $1,000. One guy posted that he swapped a $+3 for a T56, but never posted pics. The shifter does not line up with a C4, and a way to mount the C beam to the trans would have to be made.
