I am currently building a 400 block, highlky modified but this is going ot be a street car in a 92 camaro. I am going to spray it a wee bit as well with a NX direct port kit. I know I am going to be going over the 450 ft lbs torque rating for the t-56 that I am going to put in my car. WHat can be done to beef up a manual trans??? I know with an auto I could have it beefed up and get a nice torque converter but I don't want an auto. THanks guys.

 

I've seen T56's handle 700 ft/lbs with no problems. They're a strong transmission. If you want more then look into the Tremec, or a full-on race tranny.

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1991 Camaro Z28
350 L98 w/ T56 (originally 305 LB9 w/ T5)
318 RWHP, 419 RWTQ
12.803 @ 108.50 MPH (1.932 60')
Member: SoCal F-Bodies
ThirdGen 4-Life!

 

My brother runs a 84Z with a 13:5:1 434 that dynoed at 636 FWHP/622 FWTQ. He has a Tilton triple disc clutch in front of a T56 from a 93 TA. The stock ten bolt grenaded the first time it hooked. Now he has a 9" behind it. 93-97 T56's can take a beating. I run a Tremec TKO five speed for the torque rating and the road race gear set. Can't go wrong either way-both of our cars fried 700R4's prior. Hope this helps.

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90 IROC,394 ci,vortech,SR intake, Accel DFI, MSD 72lb. injectors,Accel injector cntrl,Tremec TKO, 9" Ford,NX 150 HP shot, Spohn adj ctrl arms-sway bars-race tqe arm-,Ground Control coil overs & camber plates,EDL tower brace, roll bar,Kirkey seat
my pics

 

i have seen stock t56's handle over 750. you can go to liberty transmission or D+D to have it beefed up. if your looking for a higher rated trans the ZF they used in C4 vettes and the 92 firehawk was validated to 600 ft-lbs. the problem is finding the bellhousing for it slp used to sell a conversion kit.

 

The Z4 used up to 93 in the C4s was only rated at 450ftlbs. I'm not sure what it's actually capable of though. From 94-96 the rating went down to 400ftlbs because the straight-cut gears were too noisy for all the bald 50 year old fat men that bought them, so the gears had to be changed so that the trans was quieter.

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The IROC Homepage
View the Restoration of an 85 IROC
Weekend projects aren't.

 

The T-56 is alot stronger than they rate it. Even if it doesn't stand up it can be built to handle a lot. There are a few 9 second cars running T-56's. Alot of 10 second cars.

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I WOULD RATHER PUSH A CAMARO THAN DRIVE AN IMPORT

1983Z28
Superramed roller 406 10.5 compression, AFR 195's and custom cam.

future mods:
N20 waiting to be installed

Wifes new car:

1995 Z28
AT, leather, T-tops bone stock for now. 250 RWHP 300 RWT 14.0 @ 99 MPH on a 2.2 60'

future mods:
header to tailpipe replacement and a cold air intake. Then I am just going to leave it alone (maybe)

 

well i got the 600 ft-lbs rating for the ZF straight from a GM powertrain engineer. i have also been told by another GM engineer how much better the ZF was than the T56.

 

I'm just giving you its official rating. Like the T56, it can certainly handle more.


------------------
The IROC Homepage
View the Restoration of an 85 IROC
Weekend projects aren't.

 

What is a ZF ??? I thought the T-5 was in the third gens then the T-56 was in the fourth gens up until they stopped making them. Whats going on here.... Whats this strong ZF ya'll are talkin about. Thanks for the help and info guys! You really are great.

 

The ZF was the 6 speed gm used before they swapped to the t-56. The t-56 is very strong! The weak spot in the trans is the tail shaft. Get one from a viper theyre much stronger.

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91 Z28 4L60, electric red, 355. JE 11.1 flat tops, LT-1 rods, L-98 crank. Ported trick-flows by GTP, cc 306 grind, 1.6 chromemoly rr's, LT-1 intake fabricated for L-98. Tubular k-member,a-arms,manual rack-and-pinion,coil-overs,koni spa-1's. Ford 9" w/3.89's and spool. and still more to come.

'89 Mustang GT. just got it. only weight reduction mods so far.

'99 Neon R/T daily driver

 

SO what years exactly had the ZF trans? i thought 93-2002 had the t-56 IF I am going ot look for a ZF then I have to knwo what year cars to look for. It's funny i have never heard of the ZF strange....

 

SO what years exactly had the ZF trans? i thought 93-2002 had the t-56 IF I am going ot look for a ZF then I have to knwo what year cars to look for. It's funny i have never heard of the ZF strange....

 

The ZF is the 6 speed that was run in the 1989 through 1996 Corvette. Use the T-56 it is cheaper and just as strong as the ZF.

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1988 Formula 5L/5sp 3.45 gears, SLP cold air kit, MAS gutted, TPIS air foil, TPIS AFPR, MAC headers, Mac under drive pulleys, MAC cat back, Relocated MAT, Vortec heads, Vortec intake, ZZ-4 cam.
Best ET street tires 13.53
Best 60 FT street tires 1.903
Best MPH street tires 100.92
255.4 RWHP = Approx 300 flywheel
314 RWTQ = Approx 369 flywheel

 

If you want bullit proof manuals, you're looking the street versions of Jeffco's, Lenco's, Liberties, etc... We are just putting a Liberty into the super street car now (1400+hp). Should be at Orlando in October (if testing goes good) with it shooting for 7.60's.

Miles

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88 427 BBC Camaro
7.76 @ 94 (1/8 mile) 10/01
12.18 @ 113 (1/4 mile) 10/99
I have brand new series 3 9 bolt posi carriers and gear sets to 4.10 available for borg warner 9 bolts. Check my web page for more info.

http://www.koolmeister.com