Yelo

LS1 CNC Ported Showroom Stock Assembled Aluminum Cylinder Heads...PN 25534321....$1,379.00 ($689.50 ea)

these are available from Scoggin Dickey and look pretty killer...CNC ported w/63cc chambers, 2.00/1.55 valves and LS6 springs installed.....supposedly good for 25hp as a direct bolt-on for LS1/LS6

anyone know how these would flow compared to a mildly ported 6.0 head ??....my guess is better

Ryan23silverado

iTrader: (1)

If I remember correctly, these are milled pretty far to bump up compression ratio. A bunch of guys have called Lingenfelter (the ones who port them) and asked if they could get any with porting but without being milled. They said all of them are milled...I wish they weren't b/c I would be running those by now

EDIT: I think I was talking about the ASA LS6 heads...not sure if the ones you mentioned are the same?

Yelo

The ASA heads that are ported by Lingenfelter are different heads ...these are GM Showroom Stockers, they are GM castings and are ported and milled by GM to meet Showroom Stock SCCA requirements