Forced Induction Superchargers | Turbochargers | Intercoolers

how high can I rev this valve train?

Thread Tools
 
Search this Thread
 
Old Jul 21, 2013 | 09:30 PM
  #1  
slowlsx's Avatar
Thread Starter
TECH Addict
15 Year Member
iTrader: (28)
 
Joined: Sep 2008
Posts: 2,258
Likes: 0
From: Deer park
Default how high can I rev this valve train?

I have a build thread up already but figured I would make another thread on my valve train to see if I am headed in the right direction for a high reving valvetrain (7000-7200)

370 iron block
Stock LSA heads with upgraded inconel exh valves
Brian Tooley .660 kit and Pushrods
239/243 620/620/ 115+4
Holley hi ram 92mm
S480 race cover 96mm 1.32AR

I am contemplating doing the comp trunion upgrade on my stock rockers and wanted to see what everyone thought of them or can i do without them?

Second question is what would this combo want to be shifted at?
Reply
Old Jul 21, 2013 | 09:36 PM
  #2  
427zm's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Apr 2012
Posts: 1,053
Likes: 0
From: Georgetown, Tx
Default

Don't see why 7k would be a problem. You've stayed relatively light on the top side. What lifters? And what lobes is the cam running?
Reply
Old Jul 21, 2013 | 10:34 PM
  #3  
3pedals's Avatar
8 Second Club
15 Year Member
iTrader: (3)
 
Joined: Mar 2007
Posts: 1,931
Likes: 6
From: WPG MB
Default

The LSA intake valves(120g)are WAY heavier than L92 valves(109g)and the LS3(91g)valves are 18g lighter than the l92!!!
#1 priority for you is get some lighter intake valves!!!!
I turn my L92 headed engine up to 7200.
Call Brian Tooley and ask him about which intake valves to run- since you have his spring set.
2nd, your cam is too big, you could take 10 degrees out of both lobes and still have a big cam for what you are trying to do. While you have Brian on the phone get him to spec you a cam.
For reference my 6.0 S480 combo made peak power at 6700 with a 227/235 114+4 cam, and a vic jr intake, your hi-ram should be better in the midrange, and rpm just as well as the vic jr.

Last edited by 3pedals; Jul 21, 2013 at 10:40 PM.
Reply
Old Jul 21, 2013 | 11:24 PM
  #4  
427zm's Avatar
TECH Fanatic
iTrader: (9)
 
Joined: Apr 2012
Posts: 1,053
Likes: 0
From: Georgetown, Tx
Default

Originally Posted by 3pedals
The LSA intake valves(120g)are WAY heavier than L92 valves(109g)and the LS3(91g)valves are 18g lighter than the l92!!!
#1 priority for you is get some lighter intake valves!!!!
I turn my L92 headed engine up to 7200.
Call Brian Tooley and ask him about which intake valves to run- since you have his spring set.
2nd, your cam is too big, you could take 10 degrees out of both lobes and still have a big cam for what you are trying to do. While you have Brian on the phone get him to spec you a cam.
For reference my 6.0 S480 combo made peak power at 6700 with a 227/235 114+4 cam, and a vic jr intake, your hi-ram should be better in the midrange, and rpm just as well as the vic jr.
I stand corrected. I thought the LSA heads had the LS3 hollow stem valves. They're light, like 94-95 grams.
Reply
Old Jul 22, 2013 | 12:00 AM
  #5  
slowlsx's Avatar
Thread Starter
TECH Addict
15 Year Member
iTrader: (28)
 
Joined: Sep 2008
Posts: 2,258
Likes: 0
From: Deer park
Default

Yea I do realize the cam was on the big side but I already had it so I figured I would just try it and have something to compare it to when I ran a custom grind.
Reply




All times are GMT -5. The time now is 02:27 AM.

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