Clas­sic Clean Up

RE­VIV­ING THE HEART­BEAT OF A SQUARE-BODY C-10

Street Trucks - - TECH - TEXT AND PHO­TOS BY JEREMY RICE

The pop­u­lar­ity of square-body C-10s is grow­ing, and they’re be­com­ing more dif­fi­cult to find. We’ve had our eye on a cer­tain ’79 model that had been sit­ting in our friend’s back­yard for about five years. When the time fi­nally came for us to snatch it up, we were ready. The truck hasn’t run in all of that time, and it’s slowly been de­te­ri­o­rat­ing. We did a lit­tle more re­search and dis­cov­ered that the truck hadn’t been driven daily since 2000. We had our work cut out for us.

We’ll be doc­u­ment­ing sev­eral steps in the re­vival of our '79 square-body, and we’ll start with get­ting the truck’s heart­beat pump­ing again. We did some re­search and learned that the truck was orig­i­nally equipped with a six-cylin­der, but it had been swapped out for a small-block 350-ci V-8. Since the 350 en­gine hasn’t run in at least five years, we knew that ev­ery seal and gas­ket would have de­te­ri­o­rated and would need to be re­placed. We also de­cided that it would be a good idea to swap some of the fac­tory parts for af­ter­mar­ket ver­sions to dress up the en­gine and add more horse­power.

Sum­mit Racing was called upon to us get ev­ery­thing we needed to bring the en­gine back to life. Be­fore get­ting our parts list to­gether, we ex­am­ined the cur­rent con­di­tion of our en­gine. We turned the en­gine over by hand, mak­ing sure it wasn’t locked up. Next, a com­pres­sion test ver­i­fied we had good in­ter­nals, so we fo­cused our Sum­mit or­der on the out­side of the en­gine. Fol­low along as we re­vive this square-body’s heart­beat.

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