1970 C10: Engine

Chevrolet introduced the Mark IV series big block in 1965, putting them in Corvettes and Chevelles. By 1968 they made their way into light duty trucks like my C10, but only in the 396 and later 402 designations. My truck never came with either and was originally equipped with a 350 small block. The previous owner installed a 454 that the casting numbers indicate came from a 1978 light duty truck. It is a two-bolt main, but has been rebuilt with new bearings and .030 over pistons. The previous owner also installed a larger cam with matching valve springs and push rods. The engine will be backed by a TCI TH350 transmission with a 2,500 stall converter to improve drivability with the larger cam. While it may not be radical, the engine should be more than enough to motivate the truck. 


I was able to get the rest of the truck disassembled and set the cab aside as well as mount the engine on a stand. While I’m waiting on weather to permit me stripping and painting the large parts like the frame, I took the opportunity to dig into the engine and clean it up. When I purchased the truck the engine was a large selling point as I was told that it had very few miles, and upon me tearing it down I found that to be accurate. The previous owner had painted it red, but I prefer a more classic Chevy orange so I started the process of cleaning the block and the tin parts for a color change.

IMG_7408edited (Medium)

With the new coat of orange paint I think it will fit right in with the rest of the truck. I hope to have it sitting back down on a completely refinished frame within the next few weeks.

Leave a Reply

Your email address will not be published. Required fields are marked *

fourteen − 3 =