Just got my new gears and posi installed. My mechanic said that since my car has an electronic speedo that I don't need to swap the speed gears. I thought that was the case on only the 4th gens. Anyways, by noting my speed in different gears at the same rpm, he appears to be right. However, I'm not exactly sure what the T-5 gears are supposed to be.

Has anyone done this before and could share their knowledge?

What exactly are the tranny gear ratios on a stock T-5 for the LO3?

------------------
92 Camaro RS, LO3, 5-spd, T-tops

Performance:
K&N Open Air Filter, Edelbrock performer TBI intake, Fastchip Prom, Timing +4 degrees, Centerforce clutch, Xact 8mm wires, SLP 1 3/4" Headers (coated), Flowmaster Catback Exhaust, Richmond 3:42 gears, Torsen HD Posi
Sights & Sounds:
Alpine 8030 Alarm System, Valentine One Radar Detector (How did I ever drive without one?), Pioneer DEH 7450 Head Unit w/6-pack CD changer, Pioneer DEQ 7600 Sound Processor, 2 Kenwood KAC-846 Amps powering 2 12" Pro Red subs, 2 Pioneer 6x9 and 2 MTX 4x6 speakers. Z28 grille w/aftermarket lights, MacEwen whiteface gauges
NEXT UP: TBI & Suspension mods

 

there is a tech article on here about speedometer gearing, i dont know if it answers your question tho.

 

Mine came w/3:08's I think most did. You will need to change the speedo gears.



------------------
Chronologically challenged. But still kicking!
'92 CAMARO RS
305 TBI 5/spd (now TPI)
B4C Alt.
Cam change:TRW 198/210 ,450/.460 114 LSA
Stock TBI manifolds
'85 IROC Ex.
14.94-92.00 mph
SPDC base and "350" Vortec coming soon!
'69 camaro-BB/Lenco,1050 dominators, /Pump Gas/no drugs 8.97-150+/3200lbs.
SoCal Thirdgen F-Bodies

 

I do believe that I need to change the gears. But I drove it around today and compared speedometer readings @ 2000rpm in different gears. The speedo readings are exactly where they are supposed to be (at least according to the F-body,org program).

Could it be possible that even though the speedometer is showing me the right speed the cars actual speed could still be off?

 

I guess I'll answer my own question.

It appears my trip & odometer readings are about 1 tenth of a mile off (faster). Even though my guages appear to be correct the car is actually moving at 90% of its reported speed. Wheres a radar/speed display when you need one? This is the same % difference between my old and current gear ratio. I guess I will put that on my things to do list.