Valiant experts! I have been advised that all 1972 Valiant and Scamps with the 318 and A/C had 8 3/4 rear ends. Anyone know for sure? Thanks for post.

Can't answer about all 72 Valiant and Scamps, but the donor car for my V-8 conversion of my Duster was a 71 Dart with 318 and A/C which had an 8 3/4 rear.

In 1971 I bought a new 1971 Plymouth Valiant Scamp. It came with a 225/6, 727 Auto and 8.75" rear. It had SBP Ralley Wheels and factory manual front disc brakes. It was built in Canada as if it makes any difference. It was a great little car, I lost it to my 1st wife in a 1977 divorce in California. I really miss that car.

They may have spec'd that combo, but Ma Mopar did all kinds of screwy things- and after 44 years, well I'd confirm what's in there 1st.

the odds ARE in your favor

The only rear end that Ma Mopar put in all the A bodies that had the drop out third members where 8 3/4 If the rear end has a removable rear cover that can be seen from the rear bumper it isn't a 8 3/4 In other words if you can see bolts holding a stamp steel cover over the rear end it isn't a 8 3/4

My '72 Duster with 318, 904, A/C, PS had a 7-1/4 rear, which I eventually broke.

I'd say if it's factory v8 car it should have 8 3/4 if /6 than 7 1/4 I think 73 up they were 8 1/4 on v8 car, my 74 valiant 318 car had 8 1/4.

Most 318 cars had 7-1/4 rears in them unless they had a manual trans or a towing package. I had a 68 Dart GT convertible with a 318, 727, and 8-3/4 because it had the factory towing package. Canadian A-Body's got the 8-3/4 more often then US versions I have found.

My father ordered/bought a 1972 Duster Twister in late 1971 , 318/a/c , the 7.25 it had originally didn't last long once I got my license ...

I can see near the end of 72 production Chrysler using them up to clean out build production stock units because they were going away for 73 .

I thought the 8.75 was only guaranteed with disc brakes or a 340?

Bought 71 Dart Swinger 318 with A/C..had 8 3/4 under it.

My Dad's 72 318 Twister had disc brakes , no 8.75.

340 or as mentioned a towing package was the only guaranteed way to get it.