aussie195588

Hey all, I've done a fair bit of mods on my 55 and due to being in Australia I had to fit a sbc power glide combo in my olds. The new engine is around 400-450hp and was wondering if the factory diff would hold up? I have read that they are pretty strong? Cheers dan

wr1970

Should be strong enough. Cheers mate. From a redneck in Kansas.LOL

aussie195588

Cheers mate! Lol

redoldsman

It should not be a problem.

Tedd Thompson

Should be good to go. Back in the day Olds and Pontiac were the preferred rear ends for hot rods. Tedd

Rocketowner

These differentials became very popular at one time in "round track racing" because word got around that they were hard to tear up. Larry

Scottwhite98

I think the "highway gears" for '55 was 3.08, but I think you could order
"mountain gears" as steep as 5.33. My '55 Olds shop manual is out in the garage, but I think they came that steep.

aussie195588

Thanks guys,


Anyone have any idea if you can get new centers for the 55 diff? and also what type of diff is it?

Mine is way too low geared for the engine gearbox im running.

Cheers


Dan