4WardInv

Glad to hear some guys chime in about the CHE, that's the direction I'm leaning for my next build!

gets70

What kind of lift can I run with stock rockers without upgrades! Do I dare go .555 or will they hit without the upgrades??
Harland Sharp has roller rocker arms for the LS1 Fits 4.8 - 5.3 - 5.7 & 6 L. Direct Bolt on. No machining required. Anyone use them are they worth the $400 for just a cam upgrade?? It's in my 5.3 Silverado wanting to run the Comp Cams thumper 275. it has .553 lift!

4WOFURY

iTrader: (2)

I've been running .608 lift on stock, untouched rockers for 6 years. Doesn't mean it's right; but...

dr_whigham

iTrader: (49)

You could run stock with no upgrade. But you're rolling the dice. The kit is only 125 bucks. Just punch out the bearings and press the new ones in.


That's a pin pulled on a grenade... Stock rocker arms puke needle bearings on bone stock cars all the time.... There's what... 66 or 69 needle bearings per rocker?

Sales@Tick

iTrader: (3)

I personally turned 7400rpm on stock trunions with a .624/.624 lift cam.

No issues.

I would always recommend a trunion upgrade though! As Whigham said, they puke on stock cams all the time.

gets70

Ok sound like good insurance, anyone use the Harland Sharp rockers I can get a set that would bolt on for just under $400, just trying to decide if I want to spend the time changing the Trunions???

GiggleJuiced_SS

iTrader: (31)

I'm running the stock rockers with comp trunion upgrade. Btr .660 springs on torquer v3 cam. No issues after 2 years of abuse on a 150 shot. They even recently all survived a nasty nitrous backfire my ls1 had. The ls6 intake,lid,maf and hood however did not

JakeFusion

iTrader: (7)

Martin, how do these work on TFS heads?

Yeah, sorry for bringing this back from the dead, but I have an idea...

dr_whigham

iTrader: (49)

And I'd also like to know you're opinion on the crowers against the T&D's please

BURN'EM

iTrader: (11)

I use Jesel shaft mounts, no issues even spinning to 7400.

JakeFusion

iTrader: (7)

Hmm T&D makes a shaft system specifically for the TFS heads... PN 20047 which is slightly different than the standard LS1. It includes an offset intake rocker arm. Any reason why they did that? Does that clean up some of the geometry issues on the TFS heads?

T&D seems to include the priority oiling as well as valve spring oiling option, and needle bearing tip option as well, like the Crowers. But from what I saw on YB was to stay away from the needle tip option but get the valve spring oiling option.

Sales@Tick

iTrader: (3)

I have run them on several sets of TFS heads to date. Clear the valve cover rail with ease and only need an aftermarket cover or spacer to clear the cover.

JakeFusion

iTrader: (7)

Excellent...

The T&D were redesigned to clear, right? And now the pushrod travels in an arc of sorts? Is that right? That doesn't sound good... But T&D builds a badass rocker in general.

Sales@Tick

iTrader: (3)

Not sure on the T&D's Jake.

Kip sent me a set to use on my personal engine, I'll let you know how they clear the factory valve cover rail soon.

I have a couple different sets of valve covers to try as well.

dr_whigham

iTrader: (49)

When I ordered mine, Kip said at MOST you'd have to lose the baffle. That's no problem for me. Now, this was on Mast heads. I don't know what it would be like for the TFS's, or any other head for that matter.