Jon Kaase has announced new cast aluminum valve covers to suit his canted-valve P-38 cylinder heads for 302 and 351cu in small-block Ford Windsor engines.
f you ask Jon Kaase about the most problematic aspect in the design process of his P-38 canted-valve cylinder heads, he’d probably surprise you when he replies "valve covers!"
“I’d hoped the standard Windsor valve covers would have housed the new valve gear with sufficient operating clearance. But they didn’t," Jon said. "An inlet and an exhaust rocker struck them—so did all the valve springs. Consequently, we were forced to invest in foundry tooling and molds and cast new ones.”
Available in black, red, or natural alloy finish or, actually, any color you want, Kaase’s new valve covers with revised bolt pattern are specifically designed to fit his unique P-38 cylinder heads.
What's so special about P-38 heads anyway?
Originally the concept for the P-38 came from Windsor enthusiasts who wanted the performance of a 351 Cleveland style head, but with the intake entries and the exhaust exits in the original positions. To this end, Kaase set about canting the intake and exhaust valves to eliminate a shrouding deficiency between the cylinder wall and the inlet valve and dramatically increasing cylinder filling. Canting also allowed increased valve diameters, particularly the intakes. On top of that, Kaase was able to quicken the port velocities, deepened the bowls, create sweeping short turns in both the intake and exhaust tracts, and improved the combustion chamber shape.
Jon Kaase Racing Engines, Inc; 770-307-0241. www.JonKaaseRacingEngines.com