LUVTruck.com

I thought I had a TH400. It is out of a 1971 C20 (3/4 ton) I read in one of the posts on here that the tranny mounts on the 400 were the easiest to do. I got my firewall beat enough, the motor mounts are where they should be, but my tranny mount is about 10" in front of the tranny crossmember. Do I have a TH400, or is it something else? Did I just misunderstand the post that said the mount bolted right up? HELP! I need to get this truck driving before rainy season (mid october.)

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No LUV anymore, but still in the GM truck family. Running a lifted 2002 Silverado Z-71!

its not a direct bolt up. if you got a kit,they supply a plate that bolts to your stock trans mount and then your TH400 should bolt up to that adapter plate. If you don't have a kit, you're going to have to fab something. but its not going to bolt up to the stock cross member/trans mount.

if your tranny is out of a truck it is more than likely a long tailshaft turbo 400 , they where used only in trucks and such if you are gonna use it for any type of dragracing i would use one out of a car , there is tons of aftermarket parts for the shorter tailshaft 400s

thanks, I'll check into that

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No LUV anymore, but still in the GM truck family. Running a lifted 2002 Silverado Z-71!

Long 350's in trucks short 400's in trucks. The best way is to look where the modulater valve is and it will tell you if it is a 350 or 400. At the rear of the transmission and pointing to the rearend it is a 350. If it is on the passenger side up by the torque converter and pointing at the passenger door it is a 400. Long 400 came in full size cars and short ones came in trucks. The longest one's are in caddy's.

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stripped and just a memory!