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Old 08-06-2004, 02:30 PM   #1
meathead95
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drivetrain help

i have aquired a 454 for my 72 2wd blazer it currently has a 350/4spd i am going with the 454 but i cannot decide which trans to use i have a 700r4 and a th400 what all will it take to put the th400 in their i have never had one before and i know it takes some kind of special thing for the kickdown can anyone help me the truck also has a 307 gear but if i use the 700r4 i will swap in a 373

thanks
keith
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Old 08-06-2004, 02:32 PM   #2
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does a sbc and a bbc use the same dist caps? sorry if it is a stupid ? but i have never had a bbc before.
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Old 08-06-2004, 02:43 PM   #3
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The 454 even uses the same distributor as the small block, so caps and stuff are the same.

I used a Th400 behind my 454 swap in my truck. It takes an electrical kickdown rather than a cable like normal trans use. I bought the Lokar kit and am very happy with it.

A good tranny shop can easily build a 700R4 that will live behind that engine, but it will cost you some more money than a Th400 build will.
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Old 08-06-2004, 02:50 PM   #4
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SB & BB dists. will interchange. Kickdown is electric-works off switch mounted on gas feed bracket-you should already have it-one wire to power switch on-one wire to connection on trans (driver side). The switch can still be purchased from GM. Turbo 400 will need an adapter between trans and tranfer(so will 700)
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Old 08-06-2004, 03:00 PM   #5
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No adapter issue on his 2wd truck.
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Old 08-07-2004, 02:25 PM   #6
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thanks guys neither the 700r4 or the th400 needs built its just a matter of choosing which one i want to use now. got anu opinions?
thanks again
keith
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