4.3 or 4.6 in sd33t?

[InSanE]

i just scored a wreck 82 MQ with a SD33t and a it has a rear LSD diff yet the plates say L28 motor was origin ally in the car, just curious if i could put the 4.6 diff's in my 85 MK LWB Sd33t 5 speed patrol as i will be running 35's in a few weeks

[jtraf]

SD33T has 4.3

almost everything else has the 4.6's

I have a set of 4.6 diffs with air locker for sale if you are interested....

[InSanE]

yea i have a set of 4.6 diff's and i was wondering if they are allright for running 35's

[jtraf]

I was running 35's with 4.3's in a 5sp SD33T

Gearing was a bit high meaning that I had to use first to take off on road if I didn't want to slip clutch and offroad slow stuff and climbing called for 1st low.

4.6's would have been better keeping the motor in turbo range more often cause as it was in 4th at 60kays the MK was only doing about 1550 revs.......

go 4.6's with 35's they will be cool......

go 4.8's if you can find a late model MK ute that would be excellent......remember MK SD33T had 4.3's and 31's from factory....

4.6's would make 33's standard gearing
4.8's would make 35's standard gearing

[InSanE]

ok man thanks allot for your help well i have the 4.6's there and my rear diff is humming its head off so i might aswell change them over and see how i go