Viton Tophat Valve Stem Seals Set for 2001+ Chevrolet GM Gen III IV LS EnginesViton valve stem seals set for 2001+ Chevrolet Gen III IV LS engines.

(2) #8105-B Cam Retainer Bolts

Advertised Exhaust Duration: 280

550 lobe separation - 114

Outside Diameter of Outer Spring (in):1

Oldsmobile V8 260-455

Optimum operating range is 6000-8500 rpm and is primarily intended to bridge the gap between N/A and Boosted applications

050" 219 int/233 exh

Fits 2003-2006 GEN III HEMI engines with EV6 injectors

- Lightweight CAD-generated design

2L 318 EX HEAVY DUTY & High PERF

2:1 w/ 65 cc heads

Catted systems feature 200 cell metallic substrate catalytic converters for extreme durability