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Old 05-05-2013, 04:50 PM   #6
ChrisBlair
Buick 455 Fan
 
Drives: 1970 Buick, 2012 1SS LS3
Join Date: Jun 2010
Location: Boston MA
Posts: 5,957
Quote:
Originally Posted by Firefighter View Post
Was there three trans patterns? I know there was a Chevy then a Pontiac. Wasn't there a Corporate dual pattern? Or something like that.

Sent from my friggin Droid by two thumbs using Tapatalk 2 or whatever the ish it's called....
I don't know how many there were but BOP had commonality. I don't know the reason

Buick Olds and Pontiac used a common pattern and Chevies were different...Not sure about GMC and Caddy. I don't know when that stopped but I'm confident it was in place in '67. I know it was for '74; I still have a TH400 long tail that was hooked up to my '74 Buick 455 bloc,k and it has the BOP pattern without doubt- bolted right up to my Buick transmission built in 1969.

There are adapters though. There might be a corprosate dual pattern in the mid to late 70s and 80s, but in the '60s the divisions hadn't been corralled into the corporate lagoon yet. I feel very confident there is going to be a tranny pattern issue with that Poncho using a Chevy engine. No deal breaker, just a mild PITA- might already have the Chevy trans for all we know.
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