GMHighTechPerformance Homepage

Blue Collar Workhorse

Even though the heads are brand new, the valveguides are checked to make sure everything is where it should be, as Rinaldi put it. The guides proved straight and consistent at .0017 to .0019 on the intake sidesc, perfect for the 2.16-inch Manley stainless valves to ensure ease of movement and a good seal, so oil doesn't get sucked in. The exhaust side needs to be opened up, as the 1.59 Manley valves are a couple of tenths thicker, and .0014 to .0016 may cause the valves to stick at increased temperatures. As soon as they become available for the L92 heads, Golen intends to go with the slightly larger 1.615 exhaust valve for even better flow.
LS2/L92 Engine Package - Blue Collar Workhorse- Tech

 Even though the heads are brand new, the valveguides are checked to make sure everything is where it should be, as Rinaldi put it. The guides proved straight and consistent at .0017 to .0019 on the intake sidesc, perfect for the 2.16-inch Manley stainless valves to ensure ease of movement and a good seal, so oil doesn't get sucked in. The exhaust side needs to be opened up, as the 1.59 Manley valves are a couple of tenths thicker, and .0014 to .0016 may cause the valves to stick at increased temperatures. As soon as they become available for the L92 heads, Golen intends to go with the slightly larger 1.615 exhaust valve for even better flow.  View Related Article

 

 

Get Adobe Flash player

Car Research Guide