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Ships within 48 hours · Estimated delivery Sep 10 - Sep 15
Requires custom tuning
Features:3-Step Rev Limiter4-Stage Multi-Step RetardRPM Activated SwitchAdjustable Start RetardCylinder Select 4
Water Injection Filter
GM Fullsize Truck 1971-72
RHS Bare Block Engine 4.120" Bore 9.250 Deck Standard Main - 6-Bolt Mains AA0220BG2T64 Requires custom tuningThis block has a 9. 240 deck height with a 4. 125 bore and a 5. 87 cylinder sleeve length. Cylinder walls are Siamese cast with press in cast iron sleeves. 12AN feeds for dry sumps. Aircraft quality A357 T6 aluminum. 6 Head Bolt Design. In recent years, LS engine technology has revolutionized the GM performance aftermarket. Gen IV engines have set a new standard for factory horsepower and torque. To meet the growing demand of today's high performance
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