en-us Fri, 26 Jun 2026 12:54:54 GMT 184806269 https://media.racingjunk.com/header-bolts-and-hardware/184806269/1970-402-4-bolt-main-chevy-big-block-and-heads.html 1970 402 Chevy Big block 4 bolt main standard bore balanced and blue printed do not have the spec sheet I'm still looking for it heads are rectangular open chamber with 108 cc mark 4 L56 will need to be resurface and new seals were rebuilt and the engine was rebuilt before but don't know the mileage on it can look and see that not much mileage was put on it had bought it for my 70 SS Nova but gone with LS motor was told it come out of 70 Camaro 6500 firm

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