Generation III Internal Engine 1997-2006 LS1 | LS6
Sponsored by:
Sponsored by:

Valves, lifters, rocker arms selection?

Thread Tools
 
Search this Thread
 
Old Jul 13, 2019 | 11:48 AM
  #1  
5.7stroker's Avatar
Thread Starter
TECH Addict
15 Year Member
Liked
Loved
Community Favorite
iTrader: (36)
 
Joined: Apr 2009
Posts: 2,357
Likes: 276
From: OH
Default Valves, lifters, rocker arms selection?

If I want to do 6 bolt heads on an LSX iron 427 twin turbo street that won’t see past say 7100 rpms and is hydrollic roller, how does my part list below look? 6875 turbos, 1300-1500 rwhp target. Low boost on street. 10.5:1 compression. I realize solid roller and LS7 heads with a different cam profile are another option but if I wanted to do cathedrals would the proper selection of parts on say a set of TFS 245's with Chamber Softening & HIP Treatment be something along the lines of:

Intake Valves - 11350H-8 - Manley 2.100" LS Hollow Stem
Exhaust Valves - 11683-8 - Manley 1.60" LS Inconel
Valve seats exhaust - Ductile Iron, Exhaust, 1.680 in TFS-30600274
Valve seats intake - Ductile Iron, intake 2.2 in TFS-51600271
Valve seals - TFS-30600455
Valve guides - TFS-30600251
Valve Springs - BTR 0.685" Lift Dual Spring Kit; Titanium Ret, Spring specs are 170 lbs @ 1.800", 380 lbs @ 1.180", 450 lbs @ 1.115, coil bind @ 1.000"
Valve Spring Retainers, locks, seals - included with BTR kit
Lifters - ST2126LSR - Johnson Lifters Link Bar Pre-Load .030" +/- .005"
Camshaft - 244/248 .629/.629 115+3 LSA
Rocker Arm Pedestals - GM P/N 12552203
Pushrods - 5/16 manton Chromoly (can I go thicker?)
Rocker Arms - LS1 rocker arms with brush CHE trunion upgrade CHE4290

Studs, nuts, and washers?

AR5.250-1LB - ARP Stud 1/2' X 5.250' (qty=20)
300-8334 - ARP Nuts, 12-Point, Custom 450, Black Oxide, 1/2'-20, Set of 10 (qty=2)
200-8534 - ARP Washers, Chromemoly, Black Oxide, 1/2' ID, 7/8' OD, .120' Thick, Set of 10 (qty=2)
AFG2.725-2LGB - ARP M8 x 2.725-Inch Studs (qty-18)
AGW550N - ARP .550-Inch O.D. Washers (qty-18)
AFG2.550-2LGB - ARP M8 x 2.550-Inch Head Studs (qty=8)
AGW675N - ARP .675-Inch O.D. Washer (Bottom Ears for 6-Bolt LSx) (qty=8)
AGN12-1 - ARP M8 x24 Nut for Top Row, Bottom Ears, & Reverse Studs for 1/2" Head Stud Kit (qty=26)
Reply




All times are GMT -5. The time now is 07:35 AM.

story-0
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-1
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-2
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-3
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-4
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-5
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-6
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-7
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-8
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-9
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE