Re: How to tell what motor is in a 1972 CMC
Hi Pat and welcome to the site. It makes sense that the BB in the truck should be a 402. Its possible the 402 blew up and a 454 was installed as replacement. By the way, you must have pictures of your truck and we love pictures on this site.
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1972 C10 Custom/Deluxe 613 Highlander 406/700R4
1999 White Tahoe LS 4x2 with Z56 Police Package
1992 K1500 GMC Suburban
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