diff ratios for Hilux V6

Post by **mmaaxx** » Mon May 01, 2006 6:19 pm

g'day all,

Id like some advice on your experiences with diff-ratios in relation to increase tyre diameter. I know that with the increased diameter your revs drop and the trucks more sluggish on take-off. My 265/75x16 BFG's have done this to my truck. If I wanted to put on 32/11.5x15 or 33/10.5x15 tyres what diff ratio would I need to put in my diff housing to give it the same perfomance that it had as if it was standard. The factory V6 diff ratio is 4.56:1 so I'm just guessing here but would 4.88:1 cure my problem or should I choose another ratio? And will the new ratio also bring my speedo back to standard? I have a Marks Adaptors variable ratio box I use for the speedo at the moment.

Any advice is appreciated.

Thanks

max

Post by **toyrex** » Mon May 01, 2006 8:01 pm

What gearbox are you using
The Commodore V6 should be about 2600/2700 at 110 kmh

Adrian
www.chevtorque.com.au

Post by **mmaaxx** » Mon May 01, 2006 9:11 pm

NAH MATE,

its a standard hilux 3.4 litre engine and standard 5 speed. Not the holden 3.8litre.

I shouldve clarrified myself abit better.

max

Post by **blackpak** » Tue May 02, 2006 12:05 pm

4.556 in the non turbo diesels might suit.

Diff Ratio (5L) 4.556:1 (1KZ-T) 3.727:1 (5VZ-FE) 4.100:1

Post by **mmaaxx** » Tue May 02, 2006 6:09 pm

thanks blakpak, but I was pretty sure the 5VZ had a 4.56:1 ratio in it standard. R u sure its 4.11:1 ? Im not doubting you I just wanna make sure.

If my hilux has got a 4.1:1 ratio, then would fitting 4.56:1 with my 265/75x16 BFG's go well to giving me better performance or would that ratio not suit that tyre size?

thanks mate,

max

Post by **V6XtraHilux** » Wed May 03, 2006 8:19 am

My XTRA cab hilux 2003 model, factory V6 3.4L engined, has 4.1 diff ratios. Confirmed by Toyota.

I think the Dual cabs have a different ratio, but not sure. You can contact any Toyota dealership, give em your rego, engine and chassis number and they can print out a technical report on the vehicle, all sorts of useful info.

Cheers

Post by **blackpak** » Wed May 03, 2006 12:34 pm

Yep I got my info off Toyota. I think the 2.7 4cly had the 4.1 as well.

Post by **mmaaxx** » Wed May 03, 2006 1:05 pm

thanks blakpak, I appreciate it.

What ratios does anybody else use with 33's on their hilux?

max

Post by **beefa125** » Wed May 03, 2006 1:41 pm

97-01 2.7 petrol has 4.3

Post by **beefa125** » Wed May 03, 2006 1:42 pm

97-01 2.7 petrol has 4.3

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