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Old 07-27-2011, 05:46 PM
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What rear end gears would you use.

Ok I just wanted some input on what rear end gears to use. I have a 1967 camaro 468 big block med. cam. It is attached to a muncie M-22 and my rear wheels are 275-60-15 The gears I have in it now are 5.14 posi. We all know that is to high for the road. I drive mostly around town and Once or twice a year I take a trip about 250 miles away. I am thinking about maybe 3.55 gears. Can I change just the ring and pinion if going with 3.55 or will I have to stay with 4.11 or lower with the 5.14 set up. Would like to know your thoughts on what gears you would go with. Thanks

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Old 07-27-2011, 06:34 PM
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Tell ya right now, you ain't going to like the switch to 3:55 from 5:14. Better go with 4:10's at least. What rear? 12 bolt?
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Old 07-27-2011, 06:55 PM
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yes it is a 12 bolt. The 5.14 gears are in the car from when it ran at the strip. I tried them on the road and I am at 3000 rpm at 45 mph. I was hoping that if I used 4.11 I could get away with just changing the ring and pinion.
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Old 07-27-2011, 07:21 PM
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gears

3.55 3.73 You own a gas station?
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Old 07-27-2011, 07:24 PM
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No gas station. When you put it that way the 3.73 sound good
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Old 07-27-2011, 07:30 PM
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Hi
4.30s & Gear Venders Or 4.30s & 200-4-R
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Old 07-27-2011, 07:43 PM
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as I recall GM had a 3.31 gear for early Camaros. My 69 Camaro with a mild 454 and 3.31 gear. it would drive any where and run 12.9 at Firebird track here in Aridzona... back in the mid 1980's
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Old 07-27-2011, 08:23 PM
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Originally Posted by Crosley
at Firebird track here in Aridzona... back in the mid 1980's
You just told where you live now! You must be buds with Techinspector1.
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Old 07-27-2011, 08:25 PM
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Quote:
Originally Posted by oldtimercarnut
yes it is a 12 bolt. The 5.14 gears are in the car from when it ran at the strip. I tried them on the road and I am at 3000 rpm at 45 mph. I was hoping that if I used 4.11 I could get away with just changing the ring and pinion.
Let's try this. What rpm do you want to run at 60 mph?
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Old 07-27-2011, 08:35 PM
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I like the 3.73 gears i have in my camaro. JMO I am running automatic at the moment with 3000 stall and 26 inch rear tires.



Cole
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Old 07-27-2011, 08:42 PM
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I would like to run around 2500 rpm at 60 mph. Cole what is your rpm with the 3.73 on the highway?
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Old 07-28-2011, 04:11 AM
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Good calculator for rpm & speed>> http://www.f-body.org/gears/
Trans Ratios etc..for Calc input>> http://www.maliburacing.com/auto_tranny_id.htm
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Old 07-28-2011, 05:34 AM
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Thanks that thread really help. I also used a couple other threads and for what I am using the car for I think 3.73 will be the gear of choice. So will the Differential have to be changed because of the smaller ring?
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Old 07-28-2011, 05:48 AM
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The only 3-series gear available for a 4-Series Carrier is the 3.73 ratio, so you can use the same Diff Carrier. For any other 3-Ser. gear you will have to change the Carrier.
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Old 07-28-2011, 06:12 AM
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That is great information!! I will look for one and order it as soon as I take the differential out. Would Summit carry 3-series gear for 4-series Carrier ?
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