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

Need help identifying which Manley duals I have

Thread Tools
 
Search this Thread
 
Old Dec 31, 2008 | 08:27 AM
  #1  
Blorton's Avatar
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Feb 2004
Posts: 126
Likes: 0
From: Hotlanta
Default Need help identifying which Manley duals I have

I bought a set of used heads with Manley duals on them and want to replace them before installation. The seller says these are good for .650, but I want to be certain what I have before ordering replacements since Manley appears to offer different widths.

I have a good caliper and would greatly appreciate any pointers on how to measure/identify these.

Thanks,
Dan
Reply
Old Jan 1, 2009 | 08:14 AM
  #2  
04gtod's Avatar
11 Second Club
iTrader: (3)
 
Joined: Sep 2007
Posts: 114
Likes: 0
From: raynham ma
Default

A common Manley spring used was part#221426 good for .650 lift. The specs I have are 1.29O.D., Rate 337, 140lb@1.800, 385@1.150, coil bind 1.100. I drove these springs about 10000 miles on the street and had them pressure tested and they were like new.I don't see them on the Manley website anymore.
Reply
Old Jan 1, 2009 | 12:56 PM
  #3  
87silverbullet's Avatar
TECH Veteran
iTrader: (11)
 
Joined: Mar 2007
Posts: 4,873
Likes: 8
From: Slidell,LA
Default

Yeah manley doesn't have them anymore. They came on a set of heads my buddy bought from MTI (Houston) years ago. We counldn't find a replacement on manley's site that had the same seat and open pressure and the inside diameter. We called thunder racing since he was using their cam (TR224) and they recommened dual patriot golds and the car has ran fine ever since with no issues
Reply
Old Jan 1, 2009 | 01:14 PM
  #4  
Blorton's Avatar
Thread Starter
On The Tree
iTrader: (2)
 
Joined: Feb 2004
Posts: 126
Likes: 0
From: Hotlanta
Default

Thanks guys - the thing is, these springs came with ti retainers which I would like to retain(heh) but the cam I'm going with only has a .581" lift. Manley shows a dual set "with damper" good for .600, but the sizes are a bit different.

So Manley definetly doesn't put any markings on their springs? I'm waiting on Tim's tool to show up so I can pull one off and get a better look.

Thanks,
Dan
Reply
Old Jan 1, 2009 | 01:27 PM
  #5  
87silverbullet's Avatar
TECH Veteran
iTrader: (11)
 
Joined: Mar 2007
Posts: 4,873
Likes: 8
From: Slidell,LA
Default

Just call your cam manufacturer or the place you got it from and see what they would recommend. The patriot golds were a lil stiffer then the manley's but they seem to work well.
Reply




All times are GMT -5. The time now is 08:40 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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