Description
Pontiac V8 1965 to 1979 HIGH PERFORMANCE valve springs, chrome moly retainers and steel locks Also see my other auction for springs by themselves Does 1 pair of Pontiac D-port cylinder heads auction is for: 16 new dual spring HIGH PERFORMANCE valve springs Chrome moly retainers 32 valve locks High quality stock replacement dual spring valve springs FOR HIGHER LIFT CAMS. Parts used and manufactured for Pontiac engine builder and guru, Spotts Performance I have a video on youtube under spotperf on how to install these springs and check clearances The dual valve springs are “dropin” on 1965 to 1979 PontiacD-port factory heads(except early SD, some 67 Ram Air). You do not need to machine the springs pads like required on other company valve springs, like Comp Cams These are good for performance cams with up to .590 lift with my VSR1 retainers and positive seals used. Make sure your machine shop is competent in checking clearances or see my video Spring specs: They install at 1.600 to 1.625 height. .910 – .920 coil bind – you need need/should have .080 from coil bind Closed spring pressure is 100-115 lbs. Open spring pressure is below300 lbs. – the “happy” pressure to ensure cam break in and longevity. Do not use steel shields. I recommend positive valveguide seals – check my other auction for those This kit is for hydraulic flat tappet, hydraulic roller and solid flat tappet cams with less the .600 lift. NOT for solid roller cam These springs are for: 068high lift cam with taller rocker arms like 1.65 041 RAIV cam See my other auctions for high quality Pontiac cam and lifter kits
