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Old 12-02-2019, 10:43 PM   #7
El Dorado Jim
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Join Date: Dec 2009
Location: El Dorado Ca
Posts: 3,374
Re: 1978 K20 454 Swap

Quote:
Originally Posted by mattshea125 View Post
Thanks for the input. I guess my biggest concern is towing, As I would like to be able to haul smaller equipment around for jobs occasionally. Or a small travel trailer and not stress the wheel bearings and ball joints out. I have a 11.5 GM14 bolt full floater for the rear which should be good. The truck will be running 265/75r16 tires and seeing very little if any off road use.
I did this swap years ago on my 74 K20,never any problems with braking, you will like the extra power for towing, mine was a 4 spd transmission and I needed to get a flywheel for a 454, if you have an automatic, you will need a 454 flex plate,they are balanced differently than for a 350
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