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#1
03-21-2005, 08:49 AM
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thinking of changing from th350 to th400 in 1970 firebird - can i use my th350 crossmember. i see two holes in the frame where crossmember bolts, figured i would have to move it to rear hole a few inches back. are there any other changes i need to make other than swaping trans yoke. what rear tail shaft should i look for
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#2
03-21-2005, 08:49 AM
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thinking of changing from th350 to th400 in 1970 firebird - can i use my th350 crossmember. i see two holes in the frame where crossmember bolts, figured i would have to move it to rear hole a few inches back. are there any other changes i need to make other than swaping trans yoke. what rear tail shaft should i look for
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#3
03-21-2005, 12:24 PM
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If you cut off the pad for the transmission mount and weld it to the other side of the crossmember it becomes a TH400 crossmember.
Don't forget you'll need a TH400 or manual trans driveshaft. The length is different on a TH350.
__________________
1971 Trans Am 455 H.O. - Cameo white 1982 Recaro T/A 305 - Black 
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#4
03-21-2005, 12:45 PM
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will the driveshaft be longer or shorter than my th-350 shaft
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#5
03-21-2005, 02:11 PM
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You will need a shorter driveshaft & 400 A/T yoke.
__________________
If you cant drive from gas pump to gas pump across the map, its not a street car. http://s207.photobucket.com/albums/b...hop/?start=100 |
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#6
03-21-2005, 05:07 PM
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You heard it here first...
V8 '70 1/2 Bird with Turbo 350 uses the same length driveshaft as a '70 1/2 T/A with Turbo 400 transmission. Pontiac used a real long T-400 yoke to make up the length for '70 1/2 production. This long yoke was also used behind Turbo 400 equipped '70 SS Chevelles & early ('69-71) big block Chevy pickups. Turbo 400 "T/A" driveshafts for '71 were slightly lengthened & the med length T-400 yoke was used. Have original examples of these driveshafts & yokes & chased quite a few of the "long" T400 yokes.
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Buzzards gotta eat... same as worms. |
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#7
03-21-2005, 05:46 PM
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sorry it's off the topic, it'll be short:
roger, did you get your little league team together that you were hoping for ? tim |
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