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MyFirstZ · 08-19-2013, 08:01 PM

Well I guess i should give you guys an update.

Car is down at the moment but ran well for 3 days before I started noticing a tick thinking it was either a lifter or some other valvetrain noise.

Started tuning the car but found the injectors were maxed out. 104% duty cycle at 6200 rpms. Not going to cut it.

So I have bosch 42lb/hr injectors, 85mm truck MAF with the adapter wire coming in.

Since we couldnt tune it any further for wide open pulls we decided to call it a night. Brought it to work the following day and found the "tick" was louder then ever. So as soon as I got back home I pulled the valve covers and checked to make sure nothing backed out. Tried spinning the pushrod and everythnig was tight.

Upon further inspection I found a cracked spring on the intake valve I believe on the second to last cylinder on the right (passenger side). Not sure what the order is on our motors

Contacted TSP and was immediately contacted back. Based on the mileage they suggested I just replace the one valve spring. (if anymore break I will demand a new set or refund and put it towards brian tooley dual springs)

Also was prompt to recheck pushrod length even though they suggested the 7.4 based on the specs of the build. gasket thickness, lifters, heads and cam which were all purchased through them same order.

So tomorrow when i get back form vacation I can check for the correct length.....

At zero lash it took 1.5 turns to torque to 22 ft lbs. They insisted this was infact to much prelaod on the lifter and i should be no more then 1 turn. Thought this was weird based on everything I read.

08-19-2013, 08:01 PM	#83
MyFirstZ Join Date: May 2009 Location: Highland Mills, NY Posts: 1,915 iTrader: (8) Social Networks:	Well I guess i should give you guys an update. Car is down at the moment but ran well for 3 days before I started noticing a tick thinking it was either a lifter or some other valvetrain noise. Started tuning the car but found the injectors were maxed out. 104% duty cycle at 6200 rpms. Not going to cut it. So I have bosch 42lb/hr injectors, 85mm truck MAF with the adapter wire coming in. Since we couldnt tune it any further for wide open pulls we decided to call it a night. Brought it to work the following day and found the "tick" was louder then ever. So as soon as I got back home I pulled the valve covers and checked to make sure nothing backed out. Tried spinning the pushrod and everythnig was tight. Upon further inspection I found a cracked spring on the intake valve I believe on the second to last cylinder on the right (passenger side). Not sure what the order is on our motors Contacted TSP and was immediately contacted back. Based on the mileage they suggested I just replace the one valve spring. (if anymore break I will demand a new set or refund and put it towards brian tooley dual springs) Also was prompt to recheck pushrod length even though they suggested the 7.4 based on the specs of the build. gasket thickness, lifters, heads and cam which were all purchased through them same order. So tomorrow when i get back form vacation I can check for the correct length..... At zero lash it took 1.5 turns to torque to 22 ft lbs. They insisted this was infact to much prelaod on the lifter and i should be no more then 1 turn. Thought this was weird based on everything I read. __________________ 2000 Camaro SS 610rwhp/570rwtq LS2 440, 12 bolt 3.73, tranzilla t56 Last edited by MyFirstZ; 08-19-2013 at 08:03 PM.