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6.2 chevy and diff ratios
Posted: Fri Jun 20, 2008 11:54 pm
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
Posted: Sat Jun 21, 2008 9:27 am
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.
Posted: Sat Jun 21, 2008 3:14 pm
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!!
turbo, non-turbo?
Posted: Tue Jun 24, 2008 8:13 pm
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!!
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
Posted: Tue Jun 24, 2008 9:07 pm
by Rampage
ive heard form most V8 boys that they prefer going back to about 4.1 OR 3.9s
Posted: Wed Jun 25, 2008 8:46 am
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.
Posted: Wed Jun 25, 2008 6:07 pm
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