looking for 391/410 gears

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12-08-2005, 09:59 PM

mcbuff47

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Join Date: Dec 2005

Location: Houma, La

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Car: 88 bird

Engine: 355

Transmission: 700 R-4

looking for 391/410 gears

Anybody have some new 391 or 410 gears to replace 308 gears in a 88 Firebird posi rear?

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12-10-2005, 07:11 PM

Ricktpi

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Location: Lower Salford, PA

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Car: 1987 Camaro Z-28

Engine: 6.3L Victor EFI

Transmission: Tremec TKO 600

Axle/Gears: Moser 9"/4.11 Trac-Lok

9 bolt or 10 bolt? 10 bolt ratios are 2.73, 3.08, 3.23, 3.42, 3.73, 4.11. 4.56. there are less choices with a 9 bolt & they are more expensive. The only ratios I know of for 9 bolts are 2.73, 3.27, 3.45 from Randy's Ring & Pinion.

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12-10-2005, 11:02 PM

Kevin91Z

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Car: 1990 Pontiac Trans Am

Engine: 355 TPI siamesed runners

Transmission: Tremec T56

Axle/Gears: 12-Bolt 3.73

You can get new 3.73 and 4.10 ratio gears for 3.08 and lower rear ends from Summit and Jegs.

If you're looking for a private party sale, please post in the classifieds.