My 421 SBC dyno pulls

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My 421 sbc dyno pulls, First 3 pulls were without a spacer, we put a HVH sucker sucker 1 inch spacer under the carb and it made 743 at 7500. Very pleased with the engine build. • #sbc #421stroker #chevystroker #chevelleengine #chevydyno #makinghorsepower #enginedyno #chevypower #sbc #421sbc #chevelle #enginedyno

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