I second the 261 option. That truck is too nice to start taking apart to drop on an S10 frame. The 261 looks original to the untrained eye, full pressure oiling, more grunt; it’s a great option and many on this site can walk you through. Get some good ratio gears and you’ll love driving the truck. I know I do on my ‘51 GMC 1 ton. $8000 for a rebuild?! Good grief! That’s the “I don’t want to do it” price. I think I put about $2500 into my ‘62 261 rebuild. New pistons, rings, gaskets, bearings, paint, carb rebuild, valves, block boring, cleaning, alternator. That was few years ago now, but it was no where near $8000.

People like it when you pop the hood and it still has a straight six. “Oh! You have the original engine in it!”

“Riiiiight….Original.” 😉
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Last edited by Fox; 11/05/2022 12:46 AM.

1970 Chevrolet C10
Grandpa's -- My first truck -- In progress to shiny
Follow the build in the Project Journal
1950 Chevrolet 1-Ton Dually
"Ole Red Girl"
In the Stovebolt Gallery
More pictures here
1951 GMC 9430 1 ton dually--Shiny! | 1972 Chevrolet C20- Rusty- the puzzle box lid for the C10 | 1962 AMC Rambler American- my wife's
Parts trucks-
1951 GMC 9300 | 1951-GMC 9430 | 1951- Chevrolet 1300