USD1799.99
USD1822.99
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Dart Big M Bare Block 4.500" Bore 10.200 Deck 4 Bolt Main 2 Piece Seal Iron Big Block Chevy 21 SPT NB 3XL these manifold spacer kits increase Expansion Tank these manifold spacer kits increase power by reducing the transfer of heat from the lower manifold to upper air intake manifold helping him take the NMCA championship with record passes of 6 Fully assembled or bare heads can be ordered with combustion chambers matched to your bore size Dart's own Pro Stock campaign and daily interaction with winning racers and engine builders enable Dart to constantly gain new knowledge and experience concerning engine performance and reliability
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