I have a '72 GS 455 and want to upgrade to a 4 speed overdrive. The car had a th350 put in it by the previous owner and it appears that the output shaft bushing or shaft is faulty. I was experiencing driveline vibration and significant trans fluid leakage even with a new seal I installed. Then I installed a new driveshaft which was balanced and a rear seal and it still vibrates and leaks. I took the trans tailshaft housing off and the bushing is beat up with numerous abnormal grooves making me believe that the shaft is oscillating too much. Since I have to remove the trans anyway I am contemplating an upgrade. I have been told that the th200r4 has the correct bolt pattern but has to be substantially upgraded to handle a big block And that the th700r4 does not have the correct bolt pattern. Any input or advice would be appreciated.
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1972 Gs455
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 csk455 |
1972 Gs455 |
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Posts: 2 09/20/06 23:46:08 |
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Dr Frankenbuick |
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Posts: 195 09/21/06 07:47:30 |
There are several shops in the Extra advertising beefed up 200s that will live behind a 455. The 200 will fit in place of the 350, but I think it requires a change in crossmember or corssmember mounting. Otherwise the driveline remains the same (no change in drivshaft or yoke). Art Car also had 200s advertised in the Extra, but not lately.
Steve B.
GSCA #2173 (1986) 67 GS 525 Stg IV 66 GS Convertible 65 GS HT 63 Riv 03 SVT Cobra Conv |
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