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Looking for gear ideas

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Old 11-14-2001, 10:40 PM
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70 LS1
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Default Looking for gear ideas

I am looking for something in the 4.5 range. I would like to find something that will fit my original carrier. Is this possible? Do I need to change to a 4 series carrier?
thanks
Old 11-15-2001, 09:00 AM
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DeenHylton
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Default Re: Looking for gear ideas (70 LS1)

Anything higher than a 3.90 requires a 4 series carrier...although I've read you can install a 4.11 with a ring gear spacer. If your going to put a lot of HP to the rear and run slicks a ring gear spacer is not the way to go. Deen
Old 11-15-2001, 11:47 AM
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ylose
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Default Re: Looking for gear ideas (DeenHylton)

yep.....as above...

also many advise not to go with the spacer unit......
also note...GM doesn't make a 3.90 for the 3 series....but Richmond does make a 3.90 for the 3 series.
Old 11-15-2001, 12:03 PM
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norvalwilhelm
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Default Re: Looking for gear ideas (DeenHylton)

When I was looking for gears I tried to find a set of 4.56 and couldn't. Now I am glad I didn't. With our modern transmission you can easily get 3.35 1st gear and with 4.11's it is almost 13 to 1 in 1st. With the overdrive it becomes 2.78. Without a modern overdrive transmission 4.56 would be a dog on the highway. I had 2 cars with 4.56 and didn't know any better at the time. Both run around 3500 on the highway and everything passed me. No more. 4.11 and 2500rpm at 70.
Old 11-15-2001, 12:55 PM
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MikeC
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Default Re: Looking for gear ideas (norvalwilhelm)

I forgot who but someone on here broke his rear end recently and blamed it on the spacer he used to the 4.XX gears on a 3series carrier. Maybe he'll visit and give his advice about spacers.
Old 11-15-2001, 01:02 PM
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MikeC
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Default Re: Looking for gear ideas (MikeC)

It was gordonm.

Heres the shortcut to the threadhttp://forums.corvetteforum.com/zerothread?id=181893





[Modified by MikeC, 11:03 AM 11/15/2001]
Old 11-15-2001, 02:56 PM
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Gordonm
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Default Re: Looking for gear ideas (MikeC)

Yes it was me. I broke the bolts right off using street tires and only around 400+ hp. I would definitly stay away from a spacer. Find a 4 series carrier and do it right. I found a carrier for around 200 dollars. Unfortantly it came a little late and it exploded before I got it in. I have a 3.70 rear that I think I am going to run for a while and see how I like it.

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