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Re: Big Blocks In 67 - 72 C10/C20?
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Originally Posted by TwoFiftyShifter
Yes. Not Terribly uncommon. Only in Two wheel drive. '67 is a bit of a one off - perhaps in 67 you couldn't? These were 396s at first and then they overbored it to 402 I think?
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In 1970 and 71 the engine was marketed as a 396, but were actually 402 C.I. as the bore was 0.032" larger than the 4.094" bore of the 396. Then in 72 they were called 402's. I don't know what GM was playing at there. I seem to recall back then that the story was that there was some problems with the early 402 engines, and GM called them 396 C.I. so buyers didn't know they were getting the 402 engine. But, who knows how stories get started?
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Bob
1967 2wd Burb, 350/TH350, 3.73 posi
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