Diff ratio 2.6 ?

[Gunna Do]

Hi all when unloading all the gear out of the donor van i found a 10 bolt diff centre in pieces .the large cog has ratio 2.6 stamped on it,i haven't heard of that ratio before does anyone know what its out of.

[Dick61]

WB Statesman, I think!

[HK1837]

2.6 replaced 2.78 in 10 bolt for Statesman during HJ. Holden continued with 2.78 for a few years but eventually Holden went to 2.6 also. All tall ratio 10 bolt in Torana and Commodore were 2.6 too.

[Gunna Do]

Thanks for that info,i suppose it would be a good cruising ratio.

[HK1837]

Good for a trimatic or TH400 308 or bigger with tow cam.

[george]

you could get an optioned hz kingswood 1980 van with 2.6 ratio , i know because i had one and no it was not a sedan diff.
but a factory van or ute one

i guess they used what ever they had during the run out of the hz.

[HK1837]

Wouldn't have been a run out, that was the economy option diff on a HZ ute or van with L31 M41 driveline. Standard was 3.08, economy option 2.6, performance option 3.36:1.