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Old 02-19-2006, 09:41 AM
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th350 in 67 Tempest

I have a 67 Tempest I am building to drive hard. I have already stabbed a 400 in her, .030 over, RAIII cam, 1:65 rockers, Hooker headers (those were alot of fun to install), Edelbrock Performer, Mild port on the 4x heads, and a Carter AFB Comp 700cfm carb. I am guessing it's putting out 320-330 HP, maybe a bit more.

Of course the ST300 tranny didn't last long living behind that. I want to find a BOP TH350 to install, with a shift kit, etc, possibly even install a manual valve body and a floor shifter...

From what I am told, the th350 will bolt right in. But what length tail shaft do I need, does anyone know? I see that there are 6 and 9 inch tailshafts. The car is in storage and I can't access it to measure the ST300 and I can't find any dimensions listed on the web for it... I am sure someone here has done this same swap....

I have a th400 but if I go with that then I have to have the driveshaft shortened and install a different trans mount. I think I would rather go with the th350 as it is lighter anyways. Does this sound logical?

Also I understand the th350 needs a kickdown cable, from the carb.... is this a big deal to rig up? Is my Carter compatible? I am getting a new carb anyways after the tranny swap complete, any recommendations?

The rear end is the 2.73 peg-leg right now, but a Safety-Track is next on the list after the trans and carb... probably with a 3.55 gear or so I'm thinking.....

Any help or input or opinions are appreciated.... I have been lurking here for awhile and this is one of the better boards on the web, most of you know what you are talking about


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Old 02-19-2006, 09:45 AM
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THe t-350 was built in 6 , 9 & 12 inch tail housings.....

A 6 inch tail housing would be your best bet for ease of install.

THe detent cable is dirt simple to hook up. Many brackets are available from Jegs or Summit .

your carb should have the hole for the Cable hook up on the throttle arm
Dont worry how old you are... it is the mileage on your body that adds up.
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