ECR GM LS Daytona Prototype engines

[KnightEngines]

Warp - 55 deg seat, 90% throat at 1.4" on a 1.55" valve.

Methinks a 50 deg seat with 1.6" valve & 90% throat will work better for the new use of these heads - but if someone like you was to tell me to stick with a 55 deg seat & a 1.58" valve I'd listen (all ears here, not stupid enough to think I know this shit better than guys that deal with it on a daily basis).

Hoff - factory CNC with some hand finishing in the chambers & seat blend.