LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Stock LT1 Head Porting

Thread Tools
 
Search this Thread
 
Old Mar 23, 2006 | 12:14 PM
  #1  
TopendLt1's Avatar
Thread Starter
Banned
 
Joined: Mar 2006
Posts: 52
Likes: 0
Default Stock LT1 Head Porting

Does this require a PCM tune after?
About how much will this cost?



What kind of HP increase and MPG change should I expect?
Reply
Old Mar 23, 2006 | 12:27 PM
  #2  
Tony Shepherd's Avatar
8 Second Club
iTrader: (4)
 
Joined: Oct 2002
Posts: 2,913
Likes: 2
From: Round Rock TX
Default

Yes it will require a tune. Are you planning on porting them yourself or getting it done by a proffessional? I recommend Port Pros if so. portpros.com

Cost depends on what you want done. MPG and HP #'s vary on cam selection...etc. Too many variables.
Reply
Old Mar 23, 2006 | 12:32 PM
  #3  
TopendLt1's Avatar
Thread Starter
Banned
 
Joined: Mar 2006
Posts: 52
Likes: 0
Default

Do you Have to get a cam?
What did it cost you?

I know a little about cams, I would want a mild cam with good mid-topend power.

It is worth it?
Reply
Old Mar 23, 2006 | 12:42 PM
  #4  
Tony Shepherd's Avatar
8 Second Club
iTrader: (4)
 
Joined: Oct 2002
Posts: 2,913
Likes: 2
From: Round Rock TX
Default

Originally Posted by TopendLt1
Do you Have to get a cam?
What did it cost you?

I know a little about cams, I would want a mild cam with good mid-topend power.

It is worth it?
Porting the heads without installing a larger cam is almost useless. To utilize the extra flowing heads you need a larger cam with higher lift #'s and more duration. It is well worth it if you install a larger cam. Preferrably custom grind but an off the shelf cam like the cc305, cc306, or the 847 would work nice.
Reply
Old Mar 23, 2006 | 01:41 PM
  #5  
Camaroholic's Avatar
TECH Senior Member
iTrader: (1)
 
Joined: Nov 2001
Posts: 6,449
Likes: 1
From: Waco, TX
Default

Tony, Tony, Tony.... guy says "mild cam", and you play the 306/847 card. Those are anything but mild. Especially with an A4.

IMO the LPE 211/219 is a great underrated mild cam with excellent street manners.

http://www.lingenfelter.com/store/lpe-74211.html

Want something a little more, consider a CompCams XE 218/224.

http://www.thunderracing.com/catalog...&vid=4&pcid=51

Much bigger than those, you're going to get in to the land of the 2800 stall / 3.73 gears being required to make the car fun and driveable again. The 218/224 is probably too "big" for a stock stall, would probably want a full size 2400 stall (can be had pretty cheaply from some transmissions shops).
Reply
Old Mar 23, 2006 | 01:51 PM
  #6  
Tony Shepherd's Avatar
8 Second Club
iTrader: (4)
 
Joined: Oct 2002
Posts: 2,913
Likes: 2
From: Round Rock TX
Default

Ha ha! Thats mild in my book!
Reply
Old Mar 28, 2006 | 11:56 AM
  #7  
curlyws6's Avatar
On The Tree
iTrader: (2)
 
Joined: Sep 2004
Posts: 177
Likes: 0
From: Eastern NC
Default

Just my opinion..... if I were going to install a cam, look at your "longer term" goals for the car and get that cam. I have heard alot of people that were disappointed after going with a "milder" cam, wishing they had gone with a more aggressive cam.

It's your choice but you will love it once it's there!
Reply
Old Mar 28, 2006 | 02:55 PM
  #8  
Camaroholic's Avatar
TECH Senior Member
iTrader: (1)
 
Joined: Nov 2001
Posts: 6,449
Likes: 1
From: Waco, TX
Default

And I have seen guys get the biggest cam they could and be disappointed because their car runs like crap, has no low end grunt any more, can't run A/C, stalls at the stoplights, and TCC lockup drives them crazy. Yeah, a lot of that is in tuning, but for street manners, a smaller cam is justifiable.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-1

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-2

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-3

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

 Verdad Gallardo
story-4

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

 Pouria Savadkouei
story-5

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

 Verdad Gallardo
story-6

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-7

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-8

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-9

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

 Verdad Gallardo
Old Mar 28, 2006 | 03:15 PM
  #9  
slowmofo's Avatar
11 Second Club
20 Year Member
iTrader: (6)
 
Joined: Oct 2004
Posts: 1,906
Likes: 1
From: Melbourne, Florida
Default

ahhh i drive a 847 car everyday!!! suuuure it shakes alittle but who cares!!!
Reply
Old Mar 28, 2006 | 03:17 PM
  #10  
Camaroholic's Avatar
TECH Senior Member
iTrader: (1)
 
Joined: Nov 2001
Posts: 6,449
Likes: 1
From: Waco, TX
Default

Reply
Old Mar 28, 2006 | 06:40 PM
  #11  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

In the LT1 the heads are pretty good stock so the cam is the first cork in the engine, if doing just one or doing one first the cam is the right choice. On the programming, modding a computer controlled car requires reprogramming if not willing to do that leave the car stock.

There are some "mild" cams that can work wonderfully if given a chance something 210-220 on the intake can perform quite well and if you stay to the smaller end of that not exibit any "cammed" manners atall, great for a mild driver. If you want a lopey idle and all then yeah you want to go bigger.
Reply
Old Mar 28, 2006 | 10:21 PM
  #12  
TAEnvy's Avatar
TECH Fanatic
iTrader: (2)
 
Joined: Aug 2005
Posts: 1,651
Likes: 1
From: DFW
Default

anyone ever hear about Joe Overtons head guy?
Reply




All times are GMT -5. The time now is 04:47 AM.

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