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#2
04-30-2009, 12:32 PM
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running both manifolds into a single 4" on those help alot but then they won't slow down on mountains when geared down. we found that out on the 97 Pace we had with the same Chevy and 454. due to no back pressure. it's a dang if ya do dang if ya don't. ours lost brakes on Blk Mnt. yikes.
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 1978 V20 Cuddy w/ 225 Johnson. And Several other boat's 
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