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

overkill heads on a 346

Thread Tools
 
Search this Thread
 
Old Aug 9, 2005 | 02:27 PM
  #21  
Tony Mamo @ AFR's Avatar
Flow Wizard
20 Year Member
iTrader: (13)
 
Joined: Feb 2004
Posts: 2,197
Likes: 7
Default

Originally Posted by JZ'sTA
Hey Tony saying you took a cam like a 230/234 high 500 low 600 lift and ran a 205 and 225 head on a stock cubic inch motor which would make more power?
Using the same compression.
My "Air Dyno" has the 225's coming in 10-15 HP stronger....
Reply
Old Aug 9, 2005 | 03:49 PM
  #22  
JZ'sTA's Avatar
Banned
iTrader: (23)
 
Joined: Jan 2004
Posts: 3,126
Likes: 2
From: Ft. Myers Fl
Default

I need a air dyno.
That is pretty impressive.
Why then aren't the 225's used more often of stock bottom ends? I imagin it comes down to a compression issue again right?
The 205 makes more compression out of the box which would clearly help in horsepower vs a 72cc head on a stock bore/stroke.
Now with the small chamber 62cc heads maybe that will be the start of a more common 225 head on a stock bottomend setup.
For a 300 dollar difference 10-15 HP is very worth it IMO.
Tony again thanks for answering questions for us on LS1tech.
Reply
Old Aug 9, 2005 | 06:39 PM
  #23  
Tony Mamo @ AFR's Avatar
Flow Wizard
20 Year Member
iTrader: (13)
 
Joined: Feb 2004
Posts: 2,197
Likes: 7
Default

Originally Posted by JZ'sTA
I need a air dyno.
That is pretty impressive.
Why then aren't the 225's used more often of stock bottom ends? I imagin it comes down to a compression issue again right?
The 205 makes more compression out of the box which would clearly help in horsepower vs a 72cc head on a stock bore/stroke.
Now with the small chamber 62cc heads maybe that will be the start of a more common 225 head on a stock bottomend setup.
For a 300 dollar difference 10-15 HP is very worth it IMO.
Tony again thanks for answering questions for us on LS1tech.
No problem....

And yes...It's simply been a CR issue. While we could have let everyone mill the 72's down to the high 50's or low 60's (plenty of deck material to do so), I (we) have advised against it due to the fact we know that much of a mill will have an adverse effect on airflow negating some, or most of the reason our customers are buying the 225's in the first place. The reality is that "honorable" situation has cost us business but in the long run, our reputation and our repeatable continued high marks on the chassis dyno, track etc, is by far more worth it.

Hopefully the small chamber 225's are finished soon and I can finally stop making excuses regarding their delay. Once again, time spent in house to perfect the product ultimately leaves all of our customers happy....no excuses down the road about the the first run of heads being sub-par etc.

Thanks guys,
Tony M.
Reply
Old Aug 10, 2005 | 02:24 AM
  #24  
JZ'sTA's Avatar
Banned
iTrader: (23)
 
Joined: Jan 2004
Posts: 3,126
Likes: 2
From: Ft. Myers Fl
Default

Damn at least I got something involving compression correct.
LOL.
I will be a damn compression expert soon as I have been non stop reading on the subject.
I am always in the ball part but sometimes I am in Left feild instead of 3rd base.
Anyways, I/we look foward to the small chamber 225's.
Reply
Old Aug 10, 2005 | 09:31 AM
  #25  
gtodoug's Avatar
TECH Apprentice
iTrader: (1)
 
Joined: Aug 2004
Posts: 396
Likes: 0
From: Miramar, FL
Default

For what it's worth, I'm running 2.08/1.60 valves on my H/C 346. Pretty mild cam at 234/228 .576/.571 113LSA and made the numbers in my sig.
Reply




All times are GMT -5. The time now is 03:04 PM.

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 | 2026-06-09 14:55:56


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