High output small block Chevrolet engines produce the most power possible with high compression ratios, or CRs — ratios as great as 15:1. Competition and racing engines are designed this way, but require the use of high octane racing fuels. High performance “pump gas” engines can produce relatively high power levels as well, but the lower octane ratings of available pump fuel restrict CRs to levels of under 11:1. However, a carefully planned engine combination can frequently approach — or exceed — 500 horsepower.
Things You’ll Need
350- or 400 cubic inch SBC block, Aftermarket aluminum heads, High-performance engine components, Performance engine assembly manual, Engine assembly tools