Hey guys, first post here. Having some trouble. Truck is a 99 R/T extended cab. Factory cylinder heads cracked. Decided to replace with Enginequest assembled heads. Heads seemed great when I unboxed them, valves sealed nicely and held carb cleaner.
Problem is, when I torqued down the rocker arms all of the valves are slightly held open. Checked with cam off lobe at TDC to be sure, valves never close. All other parts in the motor are stock. Pushrods measured out to 6.9".
Called Enginequest. They advised me to install the lifters completely dry. I gave it a shot, disassembled every lifter cleaned then put them back together dry. This worked for about half the cylinders, but the plungers on the lifters are almost completely bottomed out. On the other half the plungers are completely bottomed out and the valve is still cracked open off cam lobe.
Any ideas? Shorter pushrods? Worn rocker arms?(They look ok)
Thanks for any and all help.