speedo gears?? rear swap

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Jul 16, 2005 | 05:36 PM

Brisk

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From: Beautiful BC

Car: '88 IROC-Z / '91 Z28 / '91 GTA

Engine: LT4 Hot Cam 305 / L98 355 / MR 383

Transmission: 5-spd / 700R4 / 700R4

Axle/Gears: 3:45 / 3:23 / 3:23

speedo gears?? rear swap

Hey guys... want to swap in a new rear end with 3:73's replacing the 3:08's..., but I can't get the proper Drive and Driven gears at the dealer (discontinued) now what??

Jul 16, 2005 | 08:24 PM

jmd

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From: Aridzona

Car: `86 SS / `87 SS

Engine: L69 w/ TPI on top / 305 4bbl

Transmission: `95 T56 \ `88 200-4R

I can get 'em. PM me tyre size, your zip / postal code and I'll let ya know.

Jul 16, 2005 | 08:49 PM

leeperryracing

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From: Denver, CO

Car: cleanest '86 sport coupe around!!

Engine: 355ci twin 66mm turbos on e85

Transmission: built rmvb th400 w/ t-brake

Axle/Gears: 3.23

go to www.bowtieoverdrive.com there is nothing for a 700r-4 that they do not have.

Jul 16, 2005 | 11:46 PM

Brisk

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iTrader: (25)

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From: Beautiful BC

Car: '88 IROC-Z / '91 Z28 / '91 GTA

Engine: LT4 Hot Cam 305 / L98 355 / MR 383

Transmission: 5-spd / 700R4 / 700R4

Axle/Gears: 3:45 / 3:23 / 3:23

Well I was at the local dealer today and I think I got the part numbers that I need. Apparently I need to change both the drive gear and the driven gear to work properly.

I have a M39 Borg Warner T-5 tranny with 245/50 R16 tires...

I don't have the part numbers off hand, but if I recall I need the purple and orange gears to get the proper ratio.

Thanks for the help!