WernerGMHTP

iTrader: (12)

Hello everyone,

I'm putting together an L92-headed mill and will be using the Corvette-style GM valve covers. Anyone have experience with Yella Terra #6667 (1.7 ratio) rockers and having to mod the valve cover undersides in any way? Just want to know what I'm up against ahead of time.

I'm using a fairly large cam - 0.620+ lift. Valve cover spacers / aftermarket covers are not an option.

Thanks!

Ben Diss

iTrader: (1)

I've got a smaller cam (.590 lift), and I did have to knock a few of the high spots down on the covers for clearance. You might find it to be a tight fit. Katech has replacement rocker cover available with more clearance if it somes down to that.

WernerGMHTP

iTrader: (12)

I see. If you don't mind me asking, what model year and vehicle valve covers were you using? I got the latest Corvette ones as they supposedly have more clearance, particularly with offset-rocker heads.

Ben Diss

iTrader: (1)

2007 Corvette, LS2, L92 heads, stock covers.

WernerGMHTP

iTrader: (12)

Anyone have any idea whether LS2 and LS3 Corvette valve covers are the same?

TJ

iTrader: (10)

i have a similar situation on a set of trick flow heads.
the valve covers i have, the baffles have been removed.
they clear the valve covers without any grinding.

Haans249

iTrader: (24)

If you remove everything (baffles/shielding) on the underside of the valve cover, you will be fine.

WKMCD

iTrader: (2)

The LS3 valve covers should be fine. If you run the LS2 you will have to grind on the baffle some but it can be left in place.

I run the GMPP on my L92's w/ YT Ultralights.

Haans249

iTrader: (24)

Sexy.