Big block ????s - The 1947 - Present Chevrolet & GMC Truck Message Board Network

*screamin_c102* · 08-10-2005, 10:26 PM

OK say I just happened to get my hands on a complete running 454 powered '73 C20 wth a TH400.

What would I need parts wise to swap the 454 and TH400 into my 71 C10.
I currently have the factory 307 and TH350.

I figure it should be relatively straight forward as our trucks came with the 402 BBC and the engine crossmember from the '73 is very close to the '71s

Will the mounts and towers fit my '71?

Will the '73 454 exhaust manifolds work in the '71?

Will the tranny crossmember need to be replaced or can I use my TH350 mount and crossmember?

What about the drive shaft, will it need to be shortened, will the TH350 yoke fit the TH400?

Will I need any special linkages ie. throttle, trans, etc.

08-10-2005, 10:26 PM	#1
screamin_c102 Account Suspended Join Date: Feb 2005 Location: Yoncalla Oregon Posts: 775	Big block ????s OK say I just happened to get my hands on a complete running 454 powered '73 C20 wth a TH400. What would I need parts wise to swap the 454 and TH400 into my 71 C10. I currently have the factory 307 and TH350. I figure it should be relatively straight forward as our trucks came with the 402 BBC and the engine crossmember from the '73 is very close to the '71s Will the mounts and towers fit my '71? Will the '73 454 exhaust manifolds work in the '71? Will the tranny crossmember need to be replaced or can I use my TH350 mount and crossmember? What about the drive shaft, will it need to be shortened, will the TH350 yoke fit the TH400? Will I need any special linkages ie. throttle, trans, etc.



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