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Th-200 transmission

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Old Mar 8, 2024 | 08:19 AM
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Default Th-200 transmission

This is not on my vette,but a 1972 GTO I bought last year,had it delivered and it had no brakes at all,so fast forward to now,drove the car down the road yesterday first time,I think it’s a 2004r, but don’t feel but three shifts,and haven’t done a lot of investigation on the tranny,but it does have the odd shape pan,but didn’t they also come out with a th-200c tranny,that was a 3 speed,and does it have same shaped pan.
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Old Mar 8, 2024 | 08:32 AM
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the 200 is a 4 and 6 cylinder transmission and looks like a small version of a T350 pan shape
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Old Mar 8, 2024 | 09:19 AM
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Thanks
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Old Mar 8, 2024 | 09:38 AM
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Originally Posted by Golferdad
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This is the shape of a 2004r 4 speed auto pan, there is also a metric th200 which is a 3 speed auto, if it's a 2004r and only hitting three speed might be as simple as a TV cable adjustment
the fill tube is in front of the governor cap on a 2004r and believe it's to the rear of it on a th200

Last edited by Golfobsessed; Mar 8, 2024 at 09:44 AM.
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Old Mar 8, 2024 | 09:53 AM
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Thanks,I will check but,thinking it possibly could be a th200, and not a 2004r then.that would make more sense but will check cable.
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Old Mar 8, 2024 | 09:56 AM
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are you sure it's not a T350 ? . they look really similar in size and shape although the T350 is a little bigger and fatter
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Old Mar 8, 2024 | 10:01 AM
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Side of my 2004r 4 speed auto
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Old Mar 8, 2024 | 11:02 AM
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It’s definitely not a th350, it has the odd shaped pan.
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Old Mar 8, 2024 | 11:53 AM
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Probably a 400.

Google "gm transmission oil pan identification"
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Old Mar 8, 2024 | 03:46 PM
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Does this help?



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Old Mar 8, 2024 | 04:28 PM
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cool chart , I knew it was close and thought I could egg shape my T350 crossmember for the 700 because there's plenty of room to modify on my 1980, I already had a G Force cross member for better exhaust system options so I didn't pursue it any further... looks like T350 to 700 is a good swap just as T400 to 200R4
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Old Mar 9, 2024 | 03:44 PM
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Originally Posted by Eric P
cool chart , I knew it was close and thought I could egg shape my T350 crossmember for the 700 because there's plenty of room to modify on my 1980, I already had a G Force cross member for better exhaust system options so I didn't pursue it any further... looks like T350 to 700 is a good swap just as T400 to 200R4
My first swap was a 700 instead of the 4 speed stick shift.....and it was not a good swap gear ratio wise, engine would wind up but good at a typical traffic light shift 3000+ rpm and then get the engine speed but by 1/2 down to typical 1600-1800 rpm.....hell of a drop, not so much issue with the DPFI I had on the car but in traffic it was a PITA because I had taught the trans how to slam shift when I rebuilt it....

I switched to a 200 4r and cured that issue ...having taught the trans fo SHIFT NOW!!!!! that RPM drop was just too irritating on a city traffic drive.....
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Old Mar 9, 2024 | 08:36 PM
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I just stuck a Sonnax 2.84 first gear kit in my 700R4 , it’s a lot nicer
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