When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
I have a fully built ls6 stroker. Some of the specs are AFR 215 cc mongoose heads, 1.8 harland sharp rockers LS7 lifters. The cam was an ASA from gmpp. I have about 21k miles on the engine and it seems soon to have this failure. Any suggestions?
Failed lifters are usually a symptom of an underlying issue. I'm not a fan of using 1.8 rockers on a cam designed for 1.7 ratio. This doesn't just increase lift but speeds up the rate at which the valve opens and closes, which could be too violent for that lifter and/or valve spring.
What springs and pushrods? Those HS rockers are great, but heavy, requiring a lot of spring to control, and therefore also needing alot of pushrod to avoid flexing and pole-vaulting. That thing looks like it had the **** beat out of it before it scrubbed the cam.
Kinda looks like when I ran some cheap chinese lifter trays one time, the lifters would spin in the bores and made lines just like that on the lobes. And of course destroyed the lifters and cam...
But like others have said you need quite a bit of spring for your setup
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.
Cam and lifter problems. 
