Hey guy i am looking at a 89 trans am with a t-56 and 3.27 gears. i was wondering how the first gear compares to say a 700r4 with 3.27 gears? What is the exact gear of a t-56? i know a 700r4 is 3.06 first gear. so i guss my main question is will a 700r4 or t-56 be faster of the line (everythign ebing the same engine, tires, etc.)
thanks
Tom

 

'94-up T56's have a 2.66 first gear. That's why the stock fourth-gens came with at least a 3.42 gear. I would recommend a 3.73 for a TPI car or 4.10's for a more radical combo.

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1992 Camaro Z28; Engine:383 w/Ported Edelbrock RPM heads. Lunati Solid Roller Cam 224/232 .502/.502, Fluidampr, Comp Cams 1.5 Roller rockers and lifters, Comp Cams Triple Valvesprings, SVO 30 lb injectors. Holley/Walbro 255 lph in-tank pump, Haltech E6GM DFI, SLP 1 3/4" headers, 4" Mufflex, T56, SLP Clutch, Pro-5.0 Shifter, 4.10 Gear, Auburn Offroad Pro Posi. Super Ram. 17" X 9.5" Ronal FireHawk Rims w/ 275 40ZR17 Bridgestone RE 730's up front and Nitto Drag NT 555R's out back.

Double-Pump This! EFI Rules!

 

If you've got the 3.27 9-bolt, your only choice for gears is the 3.70. Search this board for that info, I've posted it quite a few times. I'm getting a T56 in mine, I have 3.45 9-bolt now but will be putting in a 3.70.

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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
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The 700R4 will definitely be quicker off the line. I have the 3.23 rear end with a T56 and the car bogs like hell off the line. I'm putting 3.73 gears in over the summer. With a TPI car 3.73 is ideal. 4.10 would be nice if you can hook up.

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1991 Z28 - 350 TPI, T56, McLeod street clutch, Pro 5.0 shifter, ported plenum & runners, AFPR, Holley Annihilator ignition box and wires, Hooker shorty headers w/o AIR, Flowmaster muffler, homeade ram-air, SSM subframe connectors, Kenny Brown STB, Global West steering box brace, Steve Spohn adjustable torque arm and T56 crossmember

 

Yeah, I agree... I have the 3.08's with my '96 T56 right now, and its a little sluggish and hard to launch right now. Can't get the revs up, but I'm going to 3.73's or 4.10's soon.


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