I have an 89 TBI RS camaro with a stock rear. I want to get rid of the peg leg. Any one know what rear I should get and what Gears would be a good set. I have a drive from NJ to Rochester NY. So I want a good enbetween rear. So if any one has any idea of what I should get, please let me know.


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89 Rs Camaro 305 TBI
Custom Performance Chip
Open Air Element
80 Series FlowMaster Muffler 2.5 inch Cat Back
BFG 235/60r15 Apperance: Black gray pinstripe. Black interior with Gray center piece in seat. Blue Gauge lights and 2 Blue neons under dash Board.
90 Iroc Checkerd Tail lights
Iroc Foglights
System: Pioneer 5200 Head unit Polk 3 ways up front and in the back. Kenwood 300 watt amp pumpin a 8inch JBL GT


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You need to keep the engine in it's powerband to get good performance. I wouldn't go much higher than a 3:55 in your car. A 3.43 would probably be a good choice. A 3.73 or higher would keep you in the upper rpm range and a basically stock 305 TBI falls on it's face after 4500rpm.

 

You've most likely have the 3.42 ratio. I wouldn't bother changing it. Good compromise between performance and fuel mileage. If you want posi consider a Powertrax unit. $300 from Summit nad it goes in with basic handtools. You do have to know the number of splines on your axles though and since you have an 89 you will have to pull the axle and count the number of splines. BTW, 89 was the phase-in year for 26 to 28 spline axles, that is why you have to count.
bsa

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"If they do not run, Then they will die." - Stonewall Jackson
#3
'87 IROC, 355 TPI, Converted to SD, 700R4, B&M Megashifter, 3.42, Trick Flow Twisted Wedge Heads, Edelbrock Intake, Accel Runners, Comp Cam, Crane Gold rockers, Lucas 24# injectors, Edelbrock headers, Flowmaster 3'' exhaust, Mallory Ignition, Transgo Performance Shift Kit, Corvette Servo, 2,000 Stall Torque Converter