1970 GTO Judge RAM AIR lll 4 speed - Pontiac GTO Forum
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post #1 of 10 (permalink) Old 08-30-2019, 03:34 PM Thread Starter
 
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1970 GTO Judge RAM AIR lll 4 speed

Good afternoon. I have a 1970 GTO Judge. Iím trying to decode my transmission, the bell housing and rear. Wanted to know if I have the correct parts for numbers matching. The transmission is P9R21A. The number on the bell housing is GM3846429 and the rear casting number is 9799202 on the pumpkin. Canít really find any materials that explains these specific numbers. Any help would be appreciated. THANKS
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post #2 of 10 (permalink) Old 08-30-2019, 06:44 PM
 
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9 r 21 a october 21 69 wide ratio

thats your tailshaft number


rear end
70-72 10 bolt
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post #3 of 10 (permalink) Old 08-31-2019, 12:23 PM
 
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I’m pretty sure if you use a mirror and a flashlight you can find your vin number stamped on top of the tranny . It’s stamped on a flat pad . It’ll take you some time to find it but it’s there . I think passenger side but I could be wrong

Salinas ca
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post #4 of 10 (permalink) Old 08-31-2019, 01:34 PM Thread Starter
 
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Thanks. Iíll take a look
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post #5 of 10 (permalink) Old 08-31-2019, 02:41 PM
 
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Cool
Keep us posted

Salinas ca
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post #6 of 10 (permalink) Old 09-01-2019, 04:35 PM
 
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Did they put a 10 bolt rear in a judge? I purchased a rear end out of one in the early 80's and its a 12 bolt 342 posi.
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post #7 of 10 (permalink) Old 09-01-2019, 05:31 PM
 
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ohhhhhhhh yah they did

pontiac 12 bolts were behind 455's in 70 gto's

and

I dont think 70 judges had 455's

I think u got some bad info
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post #8 of 10 (permalink) Old 09-04-2019, 07:14 PM
 
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Originally Posted by BLK69JUDGE View Post
ohhhhhhhh yah they did

pontiac 12 bolts were behind 455's in 70 gto's

and

I dont think 70 judges had 455's

I think u got some bad info
Later year 70 Judges were available with 455ís
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post #9 of 10 (permalink) Old 09-04-2019, 08:49 PM
 
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Originally Posted by Dano628 View Post
Later year 70 Judges were available with 455ís
My books say 17 Judge 455's with possibly 3 of them being convertibles.
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post #10 of 10 (permalink) Old 09-05-2019, 12:52 PM
 
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My books say 17 Judge 455's with possibly 3 of them being convertibles.
Thatís what my book says also . I met A guy at Carlisle a few years back who had one .
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