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Old 09-16-2024, 10:59 AM   #17
MikeB
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Join Date: Jul 2000
Location: North Texas
Posts: 3,669
Re: Rear gear Ratio Opinions/Suggestions

Quote:
Originally Posted by HO455 View Post
For my GTO with a T400 3.55's with a 26" tall tire was perfect for me. But I wouldn't have been happy with 28" tires.

In my Burban I run 3.73's with a Gearvendor (Which I got off Craigslist for $600. It was the 3rd one I've bought used.) on 28" tall tires.
I must be a wuss, because I can't image driving at anything above 55-60mph with a 3.55 and 26" tires. And back in the 90s a buddy of mine with a 71 or 72 C10 went from a 3.08 to a 3.73. I was thinking about doing the same, but he told me no way should I do it. And that was probably with 235- or 225-75x15 tires.

Funny, but in my teens and 20s I had a few 55-57 cars with 3.55 axles, and even a 3.70, and drove those cars on highways quite a lot. Of course 60-65mph was the norm. I never once thought the revs were too high.

Finally, I had a co-worker 10-12 years ago, who back in the day had a brand new early 60s Corvette with a solid lifter 327 and 4.11 gears. He said he drove that car from Dallas to Houston a couple times/month to see his sweetie, but didn't remember the revs bothering him. However, his latest car--a mid-70s Nova--had a 3.42 and he was planning to go back to a 3.08.

So, I salute you guys with 3.55-3.73 axles!

As for Gear Vendors, that's got to be a great way to go if you have the budget or can find a deal on a used one.
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Mike
1969 C10 LWB -- owned for 36 years. 350/TH350, 3.08 posi, 1st Gen Vintage Air, recent AAW wiring harness, 5-lug conversion, 1985 spindles and brakes.
1982 C10 SWB -- converted from 250-six to roller cam 350, Vortec heads -- sold
1981 C10 Silverado LWB, 305, TH350C -- sold, but wish I still had it!
1969 C10 (not the current one) that I bought in the early 1980s. Paid $1200; sold for $1500 a few years later. Just a hint at the appreciation that was coming.
Retired as a factory automation products salesman.
Worked part-time over the years for an engine builder and a classic car repair shop.
Member here for 24 years! This is the very first car/truck Internet forum I joined. I still used a dial-up modem back then!
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