We don't talk about that....
2001 ECSB 4x4, 5.3, Radix, 3.0 pulley, VHP Trucker cam, 216/224 .551/.551 115 lsa, 1.8 Crane roller rockers, 4L65E, Yank SC3000, 3.73, Cal-Tracs, HPTuners.
Seriously though, more info about the setup would be helpful. Things like, what length pushrods, which springs, how big is this cam, stock or aftermarket rockers...........
Why so secretive?
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
Me? or the OP?Originally Posted by txarkitekt
Why so secretive?
Why so secretive?IDK. You tell me.Me? or the OP?
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
The short answer is you don't have enough lifter preload. Cams with higher lift need to be ground on lobes with smaller basecircle diameters. Otherwise the lobes wouldn't fit through the cam journal bearings. You need to increase the preload. This can be done with longer pushrods, longer valves, thinner head gaskets, milling the heads, milling the bottom of the rocker arm pedestals, or using adjustable rocker arms.
Your best bet is to get a dial indicater, measure the preload, and adjust accordingly. From the factory, the preload is set at about 0.125" - 0.130". For a street engine with a performance cam, I would suggest 0.080" - 0.090". For all out performance, use 0.050" - 0.080". If you go below 0.050", you start hammering on the springs, which will shorten their lifespan.
i pulled the valve covers today and found that i need longer pushrods. there's a small gap between the the valve and the rocker.
I believe we have a winner. LoL
2000 Silverado ECSB- 5.3 CAI, Pacesetter LTs, ORY- Pipe, Magnaflow XL, E-fan, Ported T/B , Nelson Tuned, Built 4l60e, Circle D Stall, 3.42s G80, 2-4 Drop, Hertz Highs, Rockford 501s
2004 Buell XB12s
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