LS1 Dirt

Our piston upgrade is represented by CP/HTC dished-top forgings...

...Note the sly gas-port holes peppering the top ring land (arrows) that aid cylinder sealing by forcing the ring outward to the cylinder wall.

Mahle Motorsports offers a lightweight alternative for the HTC budget build. Though relatively new on the hot-rodding scene, Mahle has been the OE supplier to Porsche and other high-dollar imports for decades.

Thank guru Russ Hayes for this hot-off-the-forge Speed Pro piston...

...It carries PN L2621F and is available in 3.898- and 3.908-inch bore sizes.

Questions concerning the efficiency and longevity of Mahle products should be answered here. This piston was taken straight from a C5-R 427 Corvette that went the 24-hour distance at Daytona.

ARP is now producing connecting-rod bolts for the LS-series Gen III engine.

Hank relies on Speed Pro 152M main-bearing shells and PN 8-2555CP 40x2 connecting-rod inserts for all conversions.

In order for the reluctor wheel to work properly, it must be installed flat and straight on the crankshaft flange...