1971 Buick Convertible

**SS427** · #1 07-24-2008, 05:47 AM

Post deleted by SS427

Chris KH2PM · #2 07-24-2008, 05:52 AM

3467 is the 'style' code..

Gran Sport Convertible, 112"W.B.

(I'm a big BUICK fan..GS, GSX, Stage 1 stuff..hehheh)

**Stefano** · #3 07-24-2008, 09:34 AM

Thanks for the info Guys, but still need more help.

The car has a TH400 with the VIN stamped on it, as well as this OW tag. [image]

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**Stefano** · #4 07-24-2008, 09:50 AM

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TN2Lane · #5 07-24-2008, 02:53 PM

OW is usually a W30 Olds transmission, but in this case you're in luck. Read this page and I think you'll find what you're looking for:
http://www.stage1registry.com/stage1info.html

**Mr70** · #6 07-24-2008, 05:04 PM

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 · #7 07-25-2008, 08:45 AM

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.

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