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Old 08-17-2024, 12:01 PM
RALLY RALLY is offline
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The Z28 package for 1974 included a 350ci L82 small-block V-8 that was rated at 245 net horsepower. This was clearly a performance-oriented engine, with four-bolt mains, a forged steel crank, windage tray, impact-extruded aluminum pistons, and heat-treated and shot peened rods. The cast-iron cylinder heads were still the 2.02-inch intake and 1.60-inch exhaust valves, and 76cc combustion chambers. The hydraulic-lifter camshaft featured 0.450/0.460 lift (intake/exhaust) and 346/360 duration (i/e). A dual-snorkel air cleaner sat atop the motor, while a real dual exhaust system got rid of spent combustion gases. Still used the good 2.02 heads, but they used the low rise cast iron intake and Rochester carb and later came out with the HEI distributor. This engine at 245 horsepower still had some punch and with a set of headers and good Distributor curve 300 horsepower isn't out of the question.

Last edited by RALLY; 08-18-2024 at 01:31 AM.
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Old 08-21-2024, 07:52 PM
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mssl72 mssl72 is offline
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I've owned my '74 Z since 1980. I always liked it!
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1966 L72, 4spd Caprice
1974 Z28, M40 Camaro
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