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3.45 with 6.2V8D ?

Tech Talk for Cruiser owners.

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Joined: Sat Feb 11, 2006 5:01 pm
Location: Katherine NT AUSTRALIA

3.45 with 6.2V8D ?

Post by beatle_bayly »

I'm not into rockcrawling and want to gear the trukster up for highway use. Will a healthy 6.2 diesel in an FJ60 pull 3.45 (3.54 ?) diffs OK ? I'm aiming at 2000RPM @ 100kph. I'm not sure that 3.7 is tall enough.

I plan on using 4th for towing and at present it's too low, and 5th is weak (so I'm told).

Oh, It's a standard 5-speed with factory rims and 235/85-R16 tyres.

What do I do to recalibrate the speedo ?
Beatle Bayly
Katherine NT
Oztraya
'83 FJ60 GM 6.2Dsl V8
http://photos.yahoo.com/beatle_bayly
Posts: 413
Joined: Sun May 29, 2005 11:35 pm
Location: Launceston, Tas

Post by Sixty's Guy »

Can you buy 3.54 diff crown wheel and pinions? I thought 3.7 was as tall as they go. According to my calculations, with 3.7 gears you would be doing 2040RPM at 100kph in 5th gear. The 3.7 gears were standard in US Spec FJ60's so you should be able to pick them up cheap from there.
AKA Mark.
1983 HJ60 - 2" OME springs, Bilstein shocks, 2" Bodylift, 35" BFG MT, Twin Lock Rights, Longfields, Denco Turbo, Ironman Winch
1975 FJ55 - stocko, but with power steering!
Posts: 413
Joined: Sun May 29, 2005 11:35 pm
Location: Launceston, Tas

Post by Sixty's Guy »

Try this for speedo correction too.

http://www.marks4wd.com/speedo-correction.html
AKA Mark.
1983 HJ60 - 2" OME springs, Bilstein shocks, 2" Bodylift, 35" BFG MT, Twin Lock Rights, Longfields, Denco Turbo, Ironman Winch
1975 FJ55 - stocko, but with power steering!
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