caseypryan

iTrader: (10)

Like the title says. I shimmed my stock rockers on my trickflow 215s .090, 90 thousandths. The car didn't smoke before the head swap.

Any idea if pulling the shims out and going from a 7.55 push rod to a 7.50 will change anything? These heads were ran on a different car with no shims with no problems

Russ K

iTrader: (1)

Did you apply sealant to the intake rocker arm bolts?

Russ Kemp

SOMbitch

iTrader: (8)

Valve seals and/or guides good????

I ran YT's on my TFS and after a couple breaking I am going back to upgraded stockers even though some (really respected on here) say don't do it and others (really respected on here) say no problem so we will see....

EDIT. To answer your question in the short term I don't think so...

vettenuts

iTrader: (4)

Not directly but check the rocker to spring clearances and spring to valve seal clearance through the full rocker motion. As stated, seal the intake bolts. Lastly, make sure the seals are still on the guides. I have had them pop off on other cars where they were riding up and down with the valve but not sealing the oil.


I ran Crane's on my prior set of heads with bronze guides. The wipe on the Cranes is not optimal to say the least and when I pulled the heads there was considerable guide wear. Guess I fall into the camp of YT's with the bronze guides now although I understand your reluctance to re-installing the YT's if you have one break on you.

ct06gto

Yes, shimming the rockers will cause excelerated valve guide and valve tip wear. When you shim the rockers on tfs heads you decrease the sweep pattern which drags the rocker tip over the valve tips which cause wear to valve guides and valve tips. To safley run stock rockers on tfs heads change the valve guides to powdered metal guides and run a 400lb open valve spring (tea gold).