OK I want to get ride of the peg leg in my 89 RS. I dont really know where I want to go though. Right now I roll 85 at 2000 RPMs (dont worry I dont speed....umm I got that on the Dyno hehehe) and that is great when I do the Drive from Trenton NJ to Rochester NY. I have been gettin 29 miles per gallon. Well Like I said I want a posi, but I dont know what ratio I want. i would like to keep some high mileage per galloon, dont really want to drop down below 25 MPG. but I just dont know. I was thinkin about a 3:73 at first, but when I did the math I go 2400 RPMs at 74 Mph. I dont really like that number. The 3:42 was alittle better. Can anyone give me a heads up as to which would be better for me, one of those or is there another ratio I am missing. Take a look at my Mods and see whut you think. Also I am soon to have a TB with all the mods done to it. Thanks guys



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1989 RS Camaro
305ci TBI
Mods:
Hedman Header
Highflow Cat
3inch catback pipe
FlowMaster 80 Series Muffler
14x3 Open Air Element
8.5 HighTemp Spark Plug Wires
4.7 Ohm Reistor
Torque Converter Lock Up switch
www.rit.edu/~cjp8408
AIM: PopaPork

I get about 72mph @ 2000rpm's with whats in my sig. Jury is out on the mileage for now.

It's sooooooo hard to keep my foot off the pedal with the improved acceleration I get.

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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

Go with 3.42s. They are a much more street friendly ratio and work very well with a TH700R4 as an overall package..... 3.73s are fine if your engine will pull a decent amount of high rpm power and is mainly a track car........

EDIT: Also, my car registers about 68mph @ 2000rpm in 4th gear with the converter locked, with my 3.42s and TH700R4. Some variances will be present from car to car due to the common slight inaccuracy of factory gauges.................

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1987 GTA L98 MD8
355, TFS Heads, LT4 Hot Cam
My GTA

The Minnesota F-body Club

[This message has been edited by Matt87GTA (edited October 16, 2001).]

If you do any highway driving, 3.42's... The ultimate ratio.

If you'r only going to use it for city trips 3.73's.

As a side note, I drove my car to the track (150mi) on the interstate and torched a whole tank of 94. Avg speed 65 mph, 3,xxx rpm all the way. I got 3 runs and back.

Thats 4:10's...