Although the valve springs included with PROMAXX Performance Maxx Series Small Block Chevy Cylinder Heads 9200HR can be replaced with a different set, we recommend the PROMAXX 9200 cylinder heads specifically designed for hydraulic flat tappet setups. Helpful? Yes · 2 No · 0 Report SEAN ·...
Direct-acting finger followers off the camshaft eliminate the use of hydraulic valve lifters and will never need to be adjusted. The C8 team could have easily installed a pushrod V-8 with a blower on top, but a supercharged engine doesn't have the character of a flat-plane-crank V-8....
However, the top of the line was the 454 big-block V8. It was only available with the SS package, which also included heavy duty suspension and special SS 454 badging. The less powerful version was the LS5, which made 360 horsepower through 10.25:1 compression, hydraulic lifters, dual ex...