JPR Stage 2.5 HVLD ls1 heads. These are Joe's heads off his personal car making 456rwhp. 853 castings. 1.57 / 2.02 Brand new ferrea valves. Freshly decked and pressure checked. They come with brand new PSI valvesprings (makers of teh Patriot springs), Titanium retainers, viton seals, and super 7 degree locks.

PSI Springs specs : Endurance Spring: Single- Beehive LS1 & LS6 (O.D.: 1.290") (I.D. Outer: .630") (I.D. Middle: N/A) (I.D. Inner: N/A) (Seat Pressure: 120lbs.@1.800") (Open Pressure: 360lbs.@1.175") (Rate Lb./In.: 384) (Retainer Step: .000") (Max Lift: .625") (Coil Bind: 1.100")


These heads are brand new since being setup. They have been cleaned up, pressure checked, milled for flatness, and flowed with all new valvetrain.

Valve Lift Intake
.100" 78
.200" 138
.300" 203
.400" 247
.500" 285
.600" 298




Looking for 850$ plus shipping. Check my feedback!

 

Ttt...

 

TTT for you. looks like a nice set of heads.
curious what cam you had in that thing to reach that HP level that used those springs?