The team removed the L82 cam, heads, and intake to make way for the the Comp XE274H camshaft with. With a baseline established it was time for the upgrades. Run on the Dyno in the stock configuration with long tube headers it produced 313 HP 5,400 RPM and 355 Lb-Ft of torque 3,800 RPM. 450/.460 Lift and 222 degrees of duration. It also offered a healthy at the time camshaft with a. It featured a 9.0:1 compression ratio, cast iron 882 heads, and a Quadrajet induction system. This particular small block is an L82, the performance 350 offered in the Corvette from 1973-1982, prior to the introduction of Chevys fuel injection engines. Richard first installed a 350ci SBC on the Dyno. Even though the upgrade test conducted does include a camshaft and intake upgrade as well, the main focus is the role a good set of heads plays in making real power. To demonstrate the importance of choosing the right cylinder heads, Richard Holdener teamed up with Comp Cams and RHS to set up a test using a Chevy Small Block that has a reputation for using a poor head casting. However there are many more considerations to be made about such a big decision that can make or “brake” a good engine build. When picking out cylinder heads to upgrade an engine, in general most people think in terms of flow.
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