Which rocker arms?
Teching In
Joined: Jul 2014
Posts: 9
Likes: 0
From: Polson MT.
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!
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!
Last edited by gets70; Jul 22, 2014 at 12:35 PM.
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!
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?
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.
No issues.
I would always recommend a trunion upgrade though! As Whigham said, they puke on stock cams all the time.
Teching In
Joined: Jul 2014
Posts: 9
Likes: 0
From: Polson MT.
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???
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 
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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.
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.
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.
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.
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.
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.
Which rocker arms? 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.