I know that the 88 V-6 factory final drive ratio is 3.33. Anybody know what the ratio is for the 88 Tech 4 was?

Thanks!
IRG

I wanna say 2.83? Something in that range.

Edit,

Just looked in the service manual.
Its 2.84

It shows that you could get a 3.33,3.06 or 2.84 ratios. There are about 50 different codes.

[This message has been edited by KissMySSFiero (edited 10-05-2002).]

2.84 for most L4.

Apparently there are several sets of gears in the factory trannys but only three ratios. There are only three sets of aftermarket gears I could find. They all match the factory ratios.

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11-Sept-01, The day the world as we knew it ended.

my 84 was a 3.18:1. Or so I have read.

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Matt D
1984 Indy Fiero 4sp.
1985 2m4 now equipt with a 1996 3.4 DOHC.

it is like GM got it BACKWARDS
the 4 needs all the help it can get
and the 2.8 rev's to hi on hi-ways.
my 88 coupe with a swaped in V-6 is much
happyer at speed with its duke geared 125th
then my 87 seV6 auto was with stock gears, and not alot slower to get up to speed.

are the 3 ratios the only ones GM used on all cars with the th-125???

real answer is a 4 speed auto BUT GM WAS TOO CHEAP to use one in our cars, but feel free to swap one in if you want to.

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Question wonder and be wierd

Thanks for the info guys!