1971 Buick Convertible

[Mr70]

Those are kickass cars!
I've encountered that OW tag on a few other 71 GS's.
A very stout trans. that was build better then the std.
TH400 and assembled in the same vein as the CW/CY 1970 Trans.
That 233 stamping is the day the starting assembling it,i.e August 21,1971.
1516 is the serial number of the trans. itself.

[Chris KH2PM]

Stefano, is your Buick a big-block or small-block equipped car? M38 is typically the code for TH350; M40 is for the TH400 (am I wrong..? Could be..) Maybe during some snafu on the assembly line your car received an OW trans. If it's a small-block with the TH400, it must be a stout high-perf SB, not one of the regular ones. I dunno..interesting though.

[TN2Lane]

In this case, the Julian date indicates a 1970 build for the 1971 model year. For those of you who don't know, there was a strike at GM just before the car was built; they were out of BB TH400s but had some OW ones available when production restarted, thus what's usually an Olds transmission in a Buick.

I'll let Stefano comment on the car when he's ready, but it's not a small block (or at least wasn't originally if the VIN on the trans matches).

[Mr70]

Yep you're right.I was incorrect in my previous reply.
It should say Friday,August 21st 1970,not 1971.

[BUIZILLA]

not unusual for a 71 Stage 1 car to have an OW tranny

I think the 1516 is the last 4 digits of the VIN #

in any case, the back 6 or 8 digits of the VIN would be stamped on the pan rail boss anyways

[Stefano]

The car is one of the 81, 1971 Stage One Convertibles produced. It is documented back to the original owner in Colorado. It also has an original POP. It has had 4 owners before me and has traveled just under 100,000 miles.

That sheet I found in the back panel threw me off, but I have found out that many of those sheets did not end up in the cars which they were intended for. That particular sheet is not for this car as it is missing a few options that would have been on it, as well as it shows the TH350.

I have some pics of the third owner when he bought the car in the 1980s at a Dealership called Dreiling Buick, in Lakewood Colorado. I was told that it belonged to the dealer Principal.

The trans tags did not match the cars Vin on Olds or Buick.

The Vin is on the trans and as well as the front of the engine.

This '71 455 engine has a "RS" Code, which is 1969 Stage 1. It Should be "TS" and I was wondering if anyone had seen this mistake before. The code on the POP is correct.

[Xplantdad]

Stefano...is this the one from AZ?

BTW, how are you???