How much will I like new gears??

[crazydavez28]

Probably. A lot of people don't realize that sometimes having a 2.xx ratio can actually kill mileage. 3.23-3.42's in my opinion are about the best street gear for a 3 speed transmission. Overdrive's can handle 3.73 easily and 5 or 6 speed manuals can do 4.10's and still get good mileage with superior performance everywhere.

My Camaro had 4.10 with an M6 when I bought it It got 24 mpg before I put 315's on it.

Elco averaged 14hwy with the old 305 oil slinger. Swapped in the Vortec and 4l60e (adding about 100+hp) and it averages 18hwy with the smog gears. Completely stock motor with headers, cats are intact and no codes were thrown last time I checked. Might try a towing/RV cam sometime in the future but for now I wanna see how it does with 3.23's. stock camaro 3.42's are still in my camaro and will be available once I get a 9"

!!!BTW ANYONE THINKING ABOUT ATTEMPTING THIS WITH LATER MODEL F-BODY GEARS: THE INNER PINION BEARING DOES NOT INTERCHANGE!!!

90's F-Body: HM89249
70's G-body: HM89449
Pretty close but pinion will hit the carrier

 

[CHRIS.O]

Do you have lt1 or ls1 f body? Just wondering. My 3.23 and A4 with premium on the highway will pull in close to 26mpg. Not bad for a gas guzzling v8 right? haha

 

[-83MONTESS-]

I went from lousy 2.29s to 3.73s about a year ago now and I realize that 3.73 is more aggressive than your 3.23 but it was like a whole new engine was under the hood. Instead of chirping a tire from a stop I can get sideways with ease. But I still got a 3sp so once I hit 55 shes screaming rape. I hope to go with an OD transmission and swap in some 4.10s very soon 8)

 

[crazydavez28]

Got the gears installed tonight and 😀 . No body ever told me that I'd have wheel hop! Freaking amazing difference! it has just enough juice to spin both the tires 225/75/15 off the line just stomping the pedal. Right on the traction limit. Turn a corner and hit the pedal and you have yourself a good time. Best $60 gear set so far.

 

[CHRIS.O]

In my opinion gears are probably the best hp/dollar mod you can do. Next would be a stall. Wheel hop sucks. See if you had more power though they wouldn't hop, just spin them over with a bunch of smoke. Sounds like engine mods are next haha.

 

[dogsht]

8) Good to hear. Wheelhop, nothing some inexpensive aftermarket control arms won't solve.

83Montess, Hellz yes a 200-4R would take that 4.10 to a final drive ratio of 2.74! Even with a short 26.0 tire it would cruise 70 mph at 2,500 rpm.

 

[crazydavez28]

LOVE the gears they were a good investment. Highway rpm is 2250 @80mph not bad. I think my cats are making my mileage suffer so they go away as soon as i can get it tuned. Got 18 while hauling around 700lbs of cargo with the topper on so I hope to get 20 once the cruise is working.

It was amazing that the LSD carrier fitted with different gears from a 90's f-body will fit in my 79 elco and the backlash was dead on .006" with the stock shims... I love chevy parts.

As for the wheel hop:
We are talking about the upper control arms right? I need to get adjustable ones to make them longer correct?

BTW I have a 3" lift in the rear all springs but a lot higher than stock. Are there some relocation brackets for the upper arms that will put the arms at the correct angle for this ride height?