70 l78 402/375 hp cko engine - The Supercar Registry

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70 l78 402/375 hp cko engine

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05-26-2017, 10:07 PM

68moz28rs

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Join Date: Jan 2016

Location: PA

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Quote:

Originally Posted by luzl78

meaning, the 402 was bored 30 over again meaning the 854 block is 60 over?

The 854 block In 1970 was a 402. So it's .30 over. The pistons say .60 because they're l78 pistons for a 396. So I guess you could say it's a .60 over 396 but that wouldn't be fully right because it never was a 396, like I said 402 from the factory. The pistons are gm TRW pistons too if anyone wants to know.
Thanks

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