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

PSI 1511 or PAC 1211x

Thread Tools
 
Search this Thread
 
Old Jun 29, 2013 | 07:24 AM
  #1  
redbird555's Avatar
Thread Starter
TECH Veteran
iTrader: (14)
 
Joined: Mar 2009
Posts: 4,444
Likes: 9
From: Pompano Beach FL
Default PSI 1511 or PAC 1211x

Hey guys I posted this in another thread but didn't get much feedback. My cam specs are....

Eps 222/234
.604"/.604"
115+3

So it's kind of a sleep cam with a larger duration and lift. I want to run a beehive for the weight and valve control. I think I should be fine with either the pac or psi spring as they are both rated to .625 lift. The pac springs though are quite a bit cheaper so I was just seeing if anyone had a preference one way or another. I know pac makes a good spring but I just have never seen the 1211x used so I'm a little skeptical about trusting a motor with it
Reply
Old Jun 29, 2013 | 07:54 AM
  #2  
PREDATOR-Z's Avatar
TECH Senior Member
 
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Default

I've used both, PSI would be my choice $$ allowing.
Reply
Old Jun 29, 2013 | 09:40 AM
  #3  
JakeFusion's Avatar
Super Hulk Smash
20 Year Member
Liked
Loved
Community Favorite
iTrader: (7)
 
Joined: Aug 2004
Posts: 11,258
Likes: 146
From: Pace, FL
Default

I'd do the PAC 1519 with EPS lobes. 150lbs seat pressure will be your friend and so will a nitrided ovate wire.
Reply
Old Jun 30, 2013 | 11:14 AM
  #4  
*02WS6TURK*'s Avatar
12 Second Club
iTrader: (13)
 
Joined: Apr 2010
Posts: 1,627
Likes: 1
From: Oregon Grown
Default

PAC 1518's here with my EPS 226/234 cam. Great springs.
Reply
Old Jun 30, 2013 | 11:33 AM
  #5  
RQSGTO's Avatar
Staging Lane
 
Joined: Jun 2007
Posts: 64
Likes: 0
From: MIchigan
Default

PSI 1511's here with a 220/224 .600/.600 111 cam, stock retainers and locks on stock LS6 heads.

Great springs!
Reply




All times are GMT -5. The time now is 05:45 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE