Default Re: What Gear Ratio to run 

Old 11-09-2018, 07:20 PM   #11
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FWIW, I had a set of 35s, which were aired to 28 p.s.i. for the street. I was getting around 3 grand r.p.m. at 60 m.p.h. This is with my T-18 tranny and 4:10 gears. I you compare this with those tire size/r.p.m. charts you can get online, it will show a lot less r.p.m. Although like I said, I only had 28 p.s.i., which makes the tire radius smaller.
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Default Re: What Gear Ratio to run 

Old 11-12-2018, 12:25 PM   #12
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Quote:
Originally Posted by Torxhead View Post
FWIW, I had a set of 35s, which were aired to 28 p.s.i. for the street. I was getting around 3 grand r.p.m. at 60 m.p.h. This is with my T-18 tranny and 4:10 gears. I you compare this with those tire size/r.p.m. charts you can get online, it will show a lot less r.p.m. Although like I said, I only had 28 p.s.i., which makes the tire radius smaller.
Interesting..I'm running 4.10 (actually 4.11 in the rear) on 35s (KM2s @ 30 psi) with a T18 and I'm about 2500 rpm @ 60 mph

 

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Default Re: What Gear Ratio to run 

Old 11-12-2018, 06:58 PM   #13
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Well then I would say we have different speedometer gears in the transfer case.
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Default Re: What Gear Ratio to run 

Old 11-12-2018, 10:43 PM   #14
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Quote:
Originally Posted by jp360cj View Post
That would have been good info disclose up front...

What auto do you plan to run, and with what transfer case?
Im in no rush to do the swap so I wanted to go ahead and get the right gears for what I have now, the 3 speed. which sound like 4.56 or 4.88s
Any suggestions on what auto trans case to swap in?

 

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Default Re: What Gear Ratio to run 

Old 11-13-2018, 09:12 AM   #15
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Originally Posted by Torxhead View Post
Well then I would say we have different speedometer gears in the transfer case.
Maybe...Is your speedometer way off? Mine is within a couple MPH of GPS. sounds like your 60 mph may have been closer to 70 mph.

 

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