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Author Topic:   3 speed transmissions
Scoot
Dirt Freak

Total posts: 330
posted February 07, 2002 09:12 PM
Ok guys I know this is in here somewhere but I cant find it. I have a 3 speed tranny with a 1.90 2nd gear ratio. I've been told that the markings on the tail of the tranny tell what gear it is. Can someone tell me what they are. I'm looking for a 6.50 final gear ratio, my rear gear is 3.73. I've heard there is one with a 1.74 2nd gear ratio is that correct?

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Scoot Smith Racing Team 870-365-5989

racer17j
Dirt Forum Champ
Total posts: 1565
posted February 08, 2002 01:38 AM UIN: 54865418
scoot the lines are on the imput shaft not on the tail i'm assuming yours has 3 lines witch would make it a 1.89 if you are looking for a 650 the the closest thing you would get is a 626 with a 1.68(no lines) or a 686 with a 1.84(2 lines)with your 373 gear you could get a 650 with your 1.89 if you went to a 3.42 rear gear that would give you a 646

tilley88
Dirt Freak

Total posts: 353
posted February 08, 2002 05:38 PM
Go to www.racersguide.com , then look under the transmission ratios section to find what ya need. GM ratios for 3 and 4 speeds, plus glides are listed there.

Scoot
Dirt Freak

Total posts: 330
posted February 08, 2002 06:39 PM
Thanks alot guys. I appreciate all the great info I get from here.

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Scoot Smith Racing Team 870-365-5989

bryanb30
Dirt Forum Racer

Total posts: 98
posted February 08, 2002 06:58 PM
where do you look for these lines that are on the input shaft?

tilley88
Dirt Freak

Total posts: 353
posted February 08, 2002 10:19 PM
[IMG]http://www.thedirtforum.com/ubb/smilies/cwm3.gi They cut across the input shaft like rings. Look at them close though, cause sometimes normal wear and tear will cut into the shaft and will cause a misread.

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