whats the specs on a 88 RS SC 5.0 TBI? 9-Bolt right? what kind of gears should i get and when i buy a gear (ex. 3.73) does it come with posi? thx, peace

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K&N Air Filter 14x3' Open Element, Edelbrock Catback 3", TES Edelbrock Headers, 3" Dynomax Hi-Flow Cat, 8.8mm Accel Spark Plugs, Underdrive Pulleys, JET Chip (Thurs of this week)
My 88 RS

 

I think 9 bolts were only used w/ the BW 5-speed. If it's an automatic it should be a 7.5" 10 bolt, right? Either way w/ that motor you should probably get the 3.73's. When you buy gears they only come w/ the ring and pinion if necissary. A locker would be a completely different purchase.

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85 Z28 (Soon to be GMPP 350 HO)
Headman Hedders and matching y-pipe, Edelbrock Performer, Ram Air, Accell cap and rotor, Accell Supercoil, 160 stat, highflow Catco converter, absolutely no other smog equipment, B&M shift kit, Rapidfires, numerous carb mods, and flex-a-light fan.

"If you think education is expensive, try ignorance."-Ben Franklin

 

You should have a 7.625" (7 5/8") 10-bolt right now, with 2-series 3.08 gears. When you buy new gears, you'll want ones for a 2-series carrier. Your best bet would be to try to find a whole new rear end with posi, because gears are just gears, you'll still have the open differential.

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1991 Camaro Z28
5.7L 5-Speed
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
Webmaster: ICON Motorsports

 

yes but my stock gears are like 2.78 or something. the 89 irocs were just as bad. i thought u can buy posi and get rid of the open differential? thats what i would like to do. can you give me ur opinions and price thoughts? thx guyz

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K&N Air Filter 14x3' Open Element, Edelbrock Catback 3", TES Edelbrock Headers, 3" Dynomax Hi-Flow Cat, 8.8mm Accel Spark Plugs, Underdrive Pulleys, JET Chip (Thurs of this week)
My 88 RS

 

Yeah you can buy a "locker", it's a posi. Summit has them i think, and jegs might too. If they don't carry them you can easily find a company's web site that produces them.

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85 Z28 (Soon to be GMPP 350 HO)
Headman Hedders and matching y-pipe, Edelbrock Performer, Ram Air, Accell cap and rotor, Accell Supercoil, 160 stat, highflow Catco converter, absolutely no other smog equipment, B&M shift kit, Rapidfires, numerous carb mods, and flex-a-light fan.

"If you think education is expensive, try ignorance."-Ben Franklin

 

If you get a posi, you'll need one for 26 spline axles.

 

Better crawl under your car and count he bolts before ordering anything.

If you clean off the rust on the forward-right side of teh axle and find the three character alphanumeric code (quarter-inch high characters), we can look it up for you and tell for sure.

if you want to upgrade to a Torsen, you could always reference my page:
http://www.isthq.com/~dan/10bolt.html


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Daniel Burk
http://www.isthq.com/~dan/fcar.html
'84 Trans Am WS6/L69
KB SFC, Moser axles, Torsen Diff. PST suspension, Braided stainless brake lines,
5-point racing harness, Koni struts, 11-inch rear disks,Spohn Adj. torque arm,
Ported 305 heads w/1.94"intake valves, Comp Cams XE262H, Griffen alum. radiator,
Speed-sensitive steering conversion, underdrive pulleys, Crane Hi-6 & more. 1.05g skidpad verified.

 

JEG's has a 26 spline auburn gear posi unit that will fit your car for $299.99.

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92 Trans Am/WS6/305/5Speed/T-Tops/K&N filter/Flowmaster Muffler/Ported Plenum/more mods to come.
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69 Camaro/427-currently undergoing restoration