Pete, You have helped me in the past. I have the original 12 bolt and thought I had the original tranny. It is a Powerglide, but the stamp is C0R03N, indicating at least the pan is probably a '70. Can't locate a VIN, but did locate a circular number in the casing, looking like a clock dial on the driver's side casing, stamped '66'. Don't know what that does for me.
I did pull the frame off and can get at the tranny from all sides and just can't find any numbers on it besides the pan stamp and all the patents.
Is the L48 a big block?
The engine is correctly coded "MV" - Powerglide with smog equipment and built six weeks after. Folks here have told me that the car to this engine is still out there but I am at a bit of a loss as to where to find it.
I toyed with the idea of putting newer suspension, brakes and steering components, to really enjoy it, saving all the old parts, but think I will go for as much of a resto as I can and just get it on the street sooner.
I did upgrade the 3:31 non-posi 12-bolt unit to 3:73 posi (kept the old gears) and did have the tranny rebuilt, taking the original torque converter to a 2,500 stall with a shift kit. The engine had 2:02 heads already cut and I have had it completely rebuilt as well.
The engine was date stamped six weeks later, Dec 31, 66 at the same plant as the car, chrome oil tube.
I figured that since it wasn't a numbers matching car, I could drift a bit out of the lanes of strict restoration and enjoy it too, while presenting a definite original RS/SS. Sierra Fawn with Beige Vinyl top and black bumble stripe is pretty rare.
Console car but no gages. Thought of keeping all the old stuff and converting to a console/gage car too.
Dressing up with torque thrust or American rims from the era.