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Old 10-31-2001, 06:51 PM
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Post 1972 g m c truck

does any one know if a 400 turbo tranmission
will fit in 1972 g m c truck? i have 350 eng
if so is there any thing i wood have to change like were it mount, linkage,rearend,
and so on. also how long can you leave a
tramission set with use it.
gene

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Old 11-02-2001, 06:01 PM
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Yes, the 400 turbo will fit in the 72 chevy. I have a 72 chevy pickup with a built 350 and I put in a 400 turbo. You have to move the cross member back about 4 inches. Geting the bolts out of the crossmember in a pain! The new holes are already there so that makes it easier. I think you might have to change the end of the driveline , but I don't remember. good luck with teh swap.
nick,
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Old 11-13-2001, 08:20 AM
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I can offer some advice as I work on these trucks all the time at my shop. If you swap to a 400 , use the short shaft version and if you want to do away with a future problem cut the rivets and remove the center support bracket completely and have a one piece driveshaft cut for it . He is right about moving the crossmember back and you will need a 400 yolk because the 400 has a bigger output shaft . otherwise everything else will work . The 400 has an electronic passing gear switch that mounts on the carburator on these trucks but you can put a switch on the bracket above the gas pedal . its adjustable and people run lots of 400 trans without them . If the trans is stock it needs the switch , with a shift kit you can get by without it . I have it on my 69 bigblock truck and the 400 works perfect .
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