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Re: 427 tall deck???? I need HELP!!!
You can't use regular BBC pistons in a tall block with standard rods. At TDC the pistons will be almost half an inch below the deck of the block, and you will have the world's lowest compression ratio! But, as other posters on this thread have pointed out, if you use the right parts you can build a nice tall deck 427. The question is how much will it cost vs. finding a old 454 and building that.
Yes, both tall block's have the same bell housing bolt pattern as a regular big block.
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1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90.
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