senicalj4579

iTrader: (41)

Some people are shimming the stock rockers. Some using yella terras.
I read shimming stock rockers is a no no. I hear the yella terras are a hit or miss and sometimes cause valve float. For the love of god what is the proper way to run these heads?

Russ K

iTrader: (1)

Also have the TFS 215 heads with the Yella Terra Ultralight rocker arms. No shims required. Rev to 7000, no valve float.

Russ Kemp

Darkman

iTrader: (2)

I am running TFS 215s with Jesel Sportsman rockers, no shims, - wipe pattern is perfect.

Brennen's01SS

iTrader: (1)

I ordered tfs 245, what's needed to run stock rockers?

senicalj4579

iTrader: (41)

I wanna run these heads but they seem to be a head ache already. YT rockers are another 500?! Thats 2900 for the heads and rockers!

mac62989

iTrader: (1)

Damn. No AFR love Joe?

senicalj4579

iTrader: (41)

lol it would be the same thing with afr and rockers I believe.

Darkman

iTrader: (2)

Powdered metal valve guides would help, but you have to specify those. In any event you should have a cam with lift of 0.600" or lower and open valve spring pressures of about 400 pounds or less.

NVR_SPDS

iTrader: (39)

Im running AFR 205s, with stock rockers. They were installed by Tony himself!

senicalj4579

iTrader: (41)

and what did he do to make them work?

scj

iTrader: (89)

I'm also in the same boat. Tfs 220's. I ordered shims, but I'm pretty sure I've got bronze guides, and apparently this is going to cause issues. Id rather not drop the cash on aftermarket rockers that are hit or miss.. What's the correct way to do this?

mac62989

iTrader: (1)

I discussed a package with Tony and he didnt mention anything. I know he said a 8019 spring, and a thinner set of Cometic gaskets would be needed with them. Gaskets for when you mill them but nothing about rockers..

Darkman

iTrader: (2)

For what is worth, the Trick Flow engine kits, which include TFS 215s, come with Harland Sharp SLS17 rockers.

Che70velle

iTrader: (6)

Have you guys consulted tfs? When in doubt, ask the maker.

scj

iTrader: (89)

They recommend running aftermarket rockers.

senicalj4579

iTrader: (41)

So if I choose to go with these tea/tfs heads for 2400 then ill have to add on another few hundred for rockers. 3k for heads ha! Its pushing me further into procharger land.

NVR_SPDS

iTrader: (39)

As far as I know, he checked PR length, and torqued em down. Ill ask him to chime in.

JPH

iTrader: (2)

It's ALL in the setup. What is your cam profile? TFS heads have stout closed/open spring pressures that handle most cam profiles out there nowadays. Like others have said, anything north of .590+ lift with stock rockers becomes a durability issue with bronze guides. Aftermarket FULL roller design rocker arms (setup properly) will be the best setup to insure long life durability. Use the shims supplied with the YT rockers for proper "wipe pattern" in most cases. Valve float is due to something in the parts selection not being right for the desired setup. The current 346 that I am doing for a customer right now is using TFS 215 heads (160/430 pressures), Comp LSL lobe cam, YT rocker arms, and Manley 3/8s pushrods. So far so good, expect PTV.

2002silverz28matt

I have TFS 225's on my 383, I ran them with Harland sharp rockers, and I had valve float from 5500 all the way up. I swapped to YT ultralights/LS3 hollow stem valves, picked up 40hp/30tq.

Also, the shop that does my work has a 440 ci LSX car there with TFS 245's on it with the same HS rockers as me, and it has the same problem.

Both of these cars have monster cams though.

When I talked to TEA about it, they said either do the guides or the light YT rockers, also LS3 valves if you really want to spin it really fast

senicalj4579

iTrader: (41)

Got an email back from TEA. They dont recomend shimming. Also TFS does not recomend it either or the warranty on your heads will not be honored. The trickflows should have a roller tipper rocker on them.

Back to the drawing board for me. I doubt ill spend 3k for heads.