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60s locker in a 40

Tech Talk for Cruiser owners.

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60s locker in a 40

Post by patrol_uterus »

G'day i was just wondering if anyone knows if a 60 series air locker or the whole diff center will fit in a 77 40 series
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Post by hulsty »

If its any help i'm running a complete locker centre from a HJ45 in a early 60 series rear housing.
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Post by WICKED »

Yes it will
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Post by DIRTY ROCK STAR »

WICKED wrote:Yes it will
as long as you have the 77model centre in your diff.
if someone has swapped in an early fine spline centre then i dont think it will.
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Post by WICKED »

DIRTY ROCK STAR wrote:
WICKED wrote:Yes it will
as long as you have the 77model centre in your diff.
if someone has swapped in an early fine spline centre then i dont think it will.
He asked if it fits, it does.
Didn't mention splines :finger:
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Post by nottie »

Late model like 60s are generaly a fine spline.
Early ones like 40/45s are a coarse spline.

If they are diffrent just change the ring and pinion from your old diff to the locked one then your tail shaft will bolt straight back in. The flanges for either splines are a diffrent bolt pattern.
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Post by Reddo »

nottie wrote:Late model like 60s are generally a fine spline......

All 60's run the fine spline, with the short side fitting all 40 rear axles (must be fine spline).

60 centers will fit, but you will need the fine spline long sided axle out of 40/45 (60 long side is too long), however, the whole conversion will only work, if the axle is full floating.

early 40 run course splines.... later the fine spline.
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