Well... 360's didn't come until the 1974 model Dusters. Unless someone stuck a stock 360 in a 1973 base duster.
Yes, technically a lot 74's were built in late 73 (like mine was built in Oct. 73) but were marked as 74' model years.
73's were the last year of the 340's in the A-bodies.
Yup!
I have a Roller LA360 from a 1991 RC. I stuck Speed-pro Flat-top slugs, Alum. heads, RPM Air gap manifold, Lunati Voodoo Roller Cam, freebie Hooker headers and topped with a Street Demon 750 Carb.
- About 10.2 Compression with thinner Cometic head gaskets.
- I'm loving it but, but wanted an upgrade, now I'm currently assembling a Magnum based 408 Stroker. I'll be likely selling that LA360 to my friend here who just acquired a 1976 Dart Sport if he can't then I'll be selling it on here eventually.
And yes 904's are great but I like A999's better lol. The Dodge Diplomats / Plym Gran Fury's that were in the salvage yards here were excellent donors. Sadly even those guys are getting hard to find, I'm trying to find another A999 or A998's for my friend for his 76'.