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6.2 chevy and diff ratios

Tech Talk for Nissan owners.

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6.2 chevy and diff ratios

Post by majti »

Hi....
just about to finish my conversion in GQ with 6.2d and th400 auto...but the geraing stayed the same (4.625:1). Tires are 33". What can i expect?

ty,

.majti
1991 Nissan Patrol, Chevy 6.2d&TH400, LWB (LHD), 33' BFG...5'' mannell lift
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Location: Esperance WA

Post by ZAPPA »

Not sure exactly but with the th400 not being an overdrive unit( 1:1) and the chevs not liking revving u might be in trouble.
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Post by RMP&O »

offroad pretty nice. Will idle over anything, but with 33s and no lift you will drag it! I would think gearing be fine offroad depending on what x-fer you got. Hwy he is right not so great but also not to bad, maybe top 100-110k/hr?

What x-fer you running, chevy? I would spend the money and go Atlas 4spd, lockers, bit of lift and 35's. Then you be really happy!! :armsup:

turbo, non-turbo?
www.rmp-o.com
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Post by majti »

RMP&O wrote:offroad pretty nice. Will idle over anything, but with 33s and no lift you will drag it! I would think gearing be fine offroad depending on what x-fer you got. Hwy he is right not so great but also not to bad, maybe top 100-110k/hr?

What x-fer you running, chevy? I would spend the money and go Atlas 4spd, lockers, bit of lift and 35's. Then you be really happy!! :armsup:

turbo, non-turbo?
t/c is np208, i have 5" lift form mannell...its a non turbo engine...i was think what revs would i have with those ratios and what top speed should i get from it...

.majti
1991 Nissan Patrol, Chevy 6.2d&TH400, LWB (LHD), 33' BFG...5'' mannell lift
Posts: 107
Joined: Sun Apr 09, 2006 10:03 am
Location: europe

Post by Rampage »

ive heard form most V8 boys that they prefer going back to about 4.1 OR 3.9s
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Post by brighty »

I run standard 4.1 diff ratio's behind my 6.2 with standard GQ g'box + transfer.

I find it great offroad and will go almost anywhere, 1st low range has awesome torque and will crawl over some tough terrain.... I play with it and have some fun sometimes just to see what it is capable of. And onroad I find it to be good too, I can cruise at about 120k/hr no probs on the freeway and it loves it, just need to get into it when you have a bit of an uphill climb but rerely do you have to go back to 4th gear.

Hope that helps,

by the way, you may want to get a kit form the US that joins all the main bearing caps together and strengthens it up as these engines are known to crack in the main bearing webbing(No 2 & 3 i think... could be wrong though)

Cheers,
Brighty.
When in doubt..... UTE-ERIZE it!!!
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Post by ashnbowiev8 »

Hey mate i got the 6.5 chev diesel in my gq ute with 4.1 diff gears standard 5 speed and transfer and on the hiway it sits on 2600rpm in 120ks, about 2100 rpm in 100ks
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