An email has been sent to the company. I am waiting for a reply. I will say that i was told earlier before i bought these that these lifters all have factory specs. And all rocker arms have been torqued to 21 foot pounds. I will probably be taking the covers off here soon and double checking the rocker arm torque and oil spray. Maybe I'll even be able to pinpoint a specific lifter. I will also be checking my exhaust manifold to y pipe connection for an exhaust leak.
