Author Topic: straight 6 to 350 swap  (Read 273 times)

Offline icncs21

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straight 6 to 350 swap
« on: September 07, 2020, 02:06:54 PM »
Hello, I have a 1984 C20 with a SM465 transmission. I will be putting in a (1986) 350 which I stroked to a 383 which has a Borg Warner super T10 4 speed transmission. I have 2 main questions. 1. Can I use any of the existing frame/engine block motor mount components or do I need to replace some or all of the components. Also, will I need to do anything to the drives shaft, shorten, lengthen??? Thank you for your help

Offline JohnnyPopper

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Re: straight 6 to 350 swap
« Reply #1 on: September 09, 2020, 04:32:53 PM »
I think you will need different mounts going from a 6 to a v8.

Is the v8 and trans still in the truck? If yes, take some measurements of how the components sit.

You will find common jig holes in both frames that you can use as references.

Take lots of photos too before taking anything apart.
1957 Apache 3100 235 Inline 6, 3 on the tree
1973 C-20, 3+3 454 4BBL TH400  Water Injection
1978 K-10, 350 4BBL TH350 NP203 M.M. Part time Kit/Hubs
1980 C-10 under construction