SLP springs any good?
FROM SLP:
LS1 1.250" Performance Valve Spring Set
Designed for camshafts with increased lift up to .600", these chrome silicone springs will allow higher RPM's due to their increased spring rate. When used with our matching chrome moly retainers these valve springs require no head machining to install. Unlike the factory LS1 "beehive" style, SLP's performance valve spring feature a 1.250" straight coil design.
I currently have these on my heads with titanium retainers. I am going to be giving the top end an overhaul soon and wanted to rebuild my heads with better parts if I can. Whats the best spring/retainer combo out there that can fit my heads without machining?
Lee
https://ls1tech.com/ubb/ultimatebb.p...c;f=1;t=008513
I think the REV's would be worth a good look.






