BillS

iTrader: (13)

I just buttoned up the engine from a head swap. I installed a set of milled prc stg 2.5 LS6 heads, OEM gaskets, using allready installed ARP studs. I also added rebuilt stock rockers with the Harland-sharp mod, new 7.350 pushrods, LS6 valley cover/pvc system, Fast 92mm intake, NW 90mm TB, new oem coils, new MSDD wires, new TR6 plugs.
I fired the car up for the 1st time and it started on the 1st turn of the key. I shut it down after 20 sec to check for leaks, none found. I fire it up again and all seems fine, then about 30 sec in I hear a loud ticking sound.
Any thoughts?

jrpimp00

iTrader: (17)

Are you sure your push rods are the correct length?(Did you check) Are those heads milled? If not Id think those rods are too short

trix5032

iTrader: (5)

First thing to check would be an exhaust leak off the header.