LS4 Performance Grand Prix GXP | Monte Carlo SS | Impala SS | LaCrosse Super

rockers n stuff

Thread Tools
 
Search this Thread
 
Old Feb 5, 2007 | 03:59 PM
  #21  
Mgpeagle's Avatar
TECH Fanatic
iTrader: (6)
 
Joined: Jan 2007
Posts: 1,406
Likes: 0
From: Ain't tellin'
Default

I was looking at those on the HS website. SLP also has 1.85's that fit LS6 heads too. I think the SLP's are modified stock rockers though. At least there are a couple of choices out there.

-Mike
Reply
Old Feb 5, 2007 | 04:50 PM
  #22  
Area47's Avatar
Thread Starter
TECH Fanatic
 
Joined: Jul 2006
Posts: 1,732
Likes: 0
From: K.C.
Default

Originally Posted by Mgpeagle
I was looking at those on the HS website. SLP also has 1.85's that fit LS6 heads too. I think the SLP's are modified stock rockers though. At least there are a couple of choices out there.

-Mike
there is a bunch of choices out there, i just went with non adjustables that were not 700 bucks
Reply
Old Feb 5, 2007 | 05:47 PM
  #23  
Area47's Avatar
Thread Starter
TECH Fanatic
 
Joined: Jul 2006
Posts: 1,732
Likes: 0
From: K.C.
Default

Bryan,

The picture shows that yours are the earlier design before we started removing more material for better clearance.

I can’t tell you what ratio they are from that view.

Thanx

Randy


from harland sharp.
so, if you get the old body like i have, you have to grind just a tad, nothing major. if you get the new ones like BADD has. you're golden
Reply
Old Feb 5, 2007 | 06:17 PM
  #24  
Kazmaniac's Avatar
TECH Fanatic
 
Joined: Oct 2006
Posts: 1,190
Likes: 0
Default

Originally Posted by Area47
Quote:
Originally Posted by Mgpeagle
I was looking at those on the HS website. SLP also has 1.85's that fit LS6 heads too. I think the SLP's are modified stock rockers though. At least there are a couple of choices out there.

-Mike


there is a bunch of choices out there, i just went with non adjustables that were not 700 bucks
SLP site says 12hp gain - seems like a lot of work & $$$ for 12hp.

http://www.slponline.com/view_product.asp?P=50185
Reply
Old Feb 5, 2007 | 06:35 PM
  #25  
SDfbody's Avatar
On The Tree
 
Joined: Apr 2006
Posts: 139
Likes: 0
From: South Dakota
Default

Originally Posted by Kazmaniac
SLP site says 12hp gain - seems like a lot of work & $$$ for 12hp.

http://www.slponline.com/view_product.asp?P=50185
Heres what Vinci dynoed there Impala at with 1.8 rockers.
Reply
Old Feb 5, 2007 | 06:52 PM
  #26  
Area47's Avatar
Thread Starter
TECH Fanatic
 
Joined: Jul 2006
Posts: 1,732
Likes: 0
From: K.C.
Default

Originally Posted by Kazmaniac
SLP site says 12hp gain - seems like a lot of work & $$$ for 12hp.

http://www.slponline.com/view_product.asp?P=50185
as of right now, we as a whole don't have many options unless you want to start tearing into the motor.

you can feel it, more so uptop then anything else. dunno, just me thinking. if i can get some friends of mine off their *** at ATI i could get a kit made for the ls4 cars
Reply
Old Feb 5, 2007 | 07:04 PM
  #27  
SDfbody's Avatar
On The Tree
 
Joined: Apr 2006
Posts: 139
Likes: 0
From: South Dakota
Default

Get them off their asses!!! Would be nice just to buy one kit.
Reply
Old Feb 5, 2007 | 07:55 PM
  #28  
Kazmaniac's Avatar
TECH Fanatic
 
Joined: Oct 2006
Posts: 1,190
Likes: 0
Default

Originally Posted by Area47
as of right now, we as a whole don't have many options unless you want to start tearing into the motor.

you can feel it, more so uptop then anything else. dunno, just me thinking. if i can get some friends of mine off their *** at ATI i could get a kit made for the ls4 cars
I hear you ...

SD's graph shows a 25 hp gain. I'd do it for 25.

Like you said, if I can feel it on the top end, that's where I use the car at anyway. Too freaking cold here to do anything now.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-1

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-2

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-3

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-4

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-5

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-6

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-7

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-8

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-9

10 Camaros You Should Never Buy

 
Old Feb 5, 2007 | 08:08 PM
  #29  
Area47's Avatar
Thread Starter
TECH Fanatic
 
Joined: Jul 2006
Posts: 1,732
Likes: 0
From: K.C.
Default

i'll be going to the dyno saturday, we'll see what the true numbers are from before, and now
Reply
Old Feb 5, 2007 | 08:14 PM
  #30  
kissmyss03's Avatar
TECH Regular
iTrader: (1)
 
Joined: Feb 2006
Posts: 485
Likes: 0
Default

so i think im gonna hold off on doing just rocker arms. talked to the engine teacher at school. he is curently building a 1000 hp motor and knows hiWell, standard rocker ratio for our engines are 1.7:1 and that is basically giving you .7 times more lift than your camshafts lift pattern. Using 1.8 will give you more lift. If you look up the lobe lift on your camshaft and multiply it by 1.8, this will give the total lift at the valve. Yes it is possible to gain more lift with 1.8 ratio and more air in the cylinder. Things to consider are piston to valve clearance and valve spring bind, if you do not upgrade your valve springs they may either bind, float or prematurely wear out and then allow the valve to hit the pistons stuff. he told me this,
Reply
Old Feb 5, 2007 | 08:55 PM
  #31  
Area47's Avatar
Thread Starter
TECH Fanatic
 
Joined: Jul 2006
Posts: 1,732
Likes: 0
From: K.C.
Default

Originally Posted by kissmyss03
so i think im gonna hold off on doing just rocker arms. talked to the engine teacher at school. he is curently building a 1000 hp motor and knows hiWell, standard rocker ratio for our engines are 1.7:1 and that is basically giving you .7 times more lift than your camshafts lift pattern. Using 1.8 will give you more lift. If you look up the lobe lift on your camshaft and multiply it by 1.8, this will give the total lift at the valve. Yes it is possible to gain more lift with 1.8 ratio and more air in the cylinder. Things to consider are piston to valve clearance and valve spring bind, if you do not upgrade your valve springs they may either bind, float or prematurely wear out and then allow the valve to hit the pistons stuff. he told me this,

thats a given actually.

im not sticking with the stock springs forever. i have other plans.
but for right now, i don't have any float within the stock relm of rpm range.
Reply




All times are GMT -5. The time now is 01:21 PM.

story-0
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-1
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-2
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-3
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-4
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-5
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-6
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-7
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-8
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-9
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