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

LT4 Heads!!!

Thread Tools
 
Search this Thread
 
Old Aug 14, 2007 | 09:27 PM
  #21  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

Compare the details. Both cars are IMPRESSIVE to say the least, I just think it is a good example of how well the LT1 castings actually work, as opposed to just following the "conventional wisdom" that bigger is better.
Reply
Old Aug 15, 2007 | 01:43 PM
  #22  
socal's Avatar
TECH Regular
iTrader: (1)
 
Joined: Aug 2007
Posts: 480
Likes: 0
From: Lake Jackson TX, south of Houston
Default

http://www.malcams.com/legacy/misc/headflow.htm

http://www.grandsportregistry.com/lt1vslt4.htm

http://www.jodyshapiro.com//heads.htm

here are some to compair
Reply
Old Aug 15, 2007 | 05:17 PM
  #23  
396D1SS's Avatar
TECH Resident
iTrader: (21)
 
Joined: Feb 2005
Posts: 834
Likes: 0
From: lakeland, fl
Default

Originally Posted by 96capricemgr
Some of us understand that flow or dyno numbers do not necessarily equal performance. Apparently you have not yet learned that leason.

How the hell do you know what all I have learned over the years?????????????? I have been playing with the ltx,lsx,gen1 sbc,bbc since i was a kid, I have tried ALOT of combinations in the past. I did not state flow numbers are everything. Get the facts straight before you make a judgement . I have played with lt1/lt4/afr head combinations probably more times then you have changed your underwear! If you wanna make a judgement without even knowing me i can judge /assume.

#1 From reading the forums over the past few years you come off as a real know it all "*****" (yes some of your post are helpful to some but dont get big headed with me)

#2 I have probably forgot more then you know.

#3 I was probably building motors when you were in diapers..

Do not question what "lessons" I have not learned.

You run high 11's and think you know it all? I have finished the 1/4 before you hit the 1/8 kid.


My first pissing match since 2005, usually i dont argue but you are a REAL know it all / smart ***.

Do i think I know it all? no
Do I think i am the **** because my car runs decent? no
Did your post set me off?no
Am i tired of reading your smart *** comments over the past 3 years? yes



have a nice day

Last edited by 396D1SS; Aug 15, 2007 at 05:35 PM.
Reply
Old Aug 15, 2007 | 05:51 PM
  #24  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

So show me where on street cars these big ports like LT4s and AFRs actually work. I pointed to an example to support my opinion. All you did was make attacks, no examples to support your opinion.
Pretty typical of the narrow minded folks who don't like my actual analysis of information, rather put blind faith in "conventional wisdom".
Reply
Old Aug 15, 2007 | 06:13 PM
  #25  
396D1SS's Avatar
TECH Resident
iTrader: (21)
 
Joined: Feb 2005
Posts: 834
Likes: 0
From: lakeland, fl
Default

Originally Posted by 96capricemgr
So show me where on street cars these big ports like LT4s and AFRs actually work. I pointed to an example to support my opinion. All you did was make attacks, no examples to support your opinion.
Pretty typical of the narrow minded folks who don't like my actual analysis of information, rather put blind faith in "conventional wisdom".

I was not trying to put you down or attack you. . My post might seem silly and it probably is.I am not magazine racing head statisics. I am not trying to prove anything to anybody, Over my personal comparisons from LT1/LT4 head combinations a max effort LT4 head will out perform a max effort LT1 head. This is my personal opinion that I have tested time and time again and this is what I believe. My proof is real track times with real max effort heads. .2-.3 tenths I would say is acceptable.
Reply
Old Aug 15, 2007 | 06:56 PM
  #26  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

I usually have a VERY low opinion of what magazines put in print. This article however is simply statistics and results from a race with details on racers cars. No sponsor to pimp so the facts should be right.

Both of these guys are well known on the forums, this was just a side by side list of details for both cars, if I had access to such a list outside of a magazine I assure you I would have sighted that.

Ed did not like when I said I thought Rick's car was a good argument for LT1 castings on even a race stroker, that discussion is on here somewhere. Ed even says himself that on smaller engines at stock pcm rev limitations LT4s are not the right choice.

Much of the time my responses are in hopes of getting people to think, if someone disagrees, fine, but try and show some evidence.

Like I said I have run same track same day against cars with a "bigger is better" build theory and hell they were trailered, I drove the 500 miles there and still out ET'd and MPH'd them. I am not reving too the moon either, for the 11.9 runs the shift point was 6100 rpms.
Something is going on right in my combo and I will freely admit this is the first car I ever really modded and I am not a competitive racer so it is not ME that is the magic here.
Reply
Old Aug 15, 2007 | 07:45 PM
  #27  
CNC Stew's Avatar
Staging Lane
 
Joined: Apr 2003
Posts: 87
Likes: 0
From: Warrenton Ga.
Default

Originally Posted by 96capricemgr
So show me where on street cars these big ports like LT4s and AFRs actually work.
My LT4s have a 220cc intake volumn and flow 303@.600. Some would consider them too big for a mild combo... 230* cam, 2800 stall, 3.73 gears.
I ran the times in sig and did a 7.11@96+. I also bent the small end of a Spohn CM TA so torque was not a problem. Or maybe it was.

Peace out
Reply
Old Aug 15, 2007 | 08:13 PM
  #28  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

With 190cc heads which flow just 274cfm and a mid 220s(under .570 lift both sides) in a stock shortblock best is 7.5 at 90mph, something on the order of 5-600lbs more weight and a mailorder tune from Mr. Creech. Is Edge 3400 stall and 3.73s, still running a mechanical WP as given the amount I drive it I am uncomfortable with the failure mode of electrics. I know they are worth ET reduction though.

Despite the fact your car is faster, I still think my whale compares favorably there.
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 Aug 15, 2007 | 08:31 PM
  #29  
95 Formula's Avatar
10 Second Club
20 Year Member
iTrader: (2)
 
Joined: Nov 2001
Posts: 1,239
Likes: 0
From: Baton Rouge
Default

I know I picked up a ton with my lt4 switch over. Can't really compair the heads thought since my lt1s weren't a max effort setup..but I feel some is left on the table on my lt4s also. I have 21x CC runners and flow 30x average across the ports. Its all acordingto what you want. Best mph with lt1s...126...best mph with lt4s with everything else bing the same...132. I feel if done right and compairing apples to apples..there is something to be gained with an lt4 setup.
Reply
Old Aug 15, 2007 | 09:04 PM
  #30  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

A solid roller car running low 10s aint much of a street car wether it sees street miles or not.

I do not mean to say LT4s are necessarily bad I just think people are WAY too fast to jump on that bandwagon. Most parts have their place.
Reply
Old Aug 15, 2007 | 09:15 PM
  #31  
95 Formula's Avatar
10 Second Club
20 Year Member
iTrader: (2)
 
Joined: Nov 2001
Posts: 1,239
Likes: 0
From: Baton Rouge
Default

Originally Posted by 96capricemgr
A solid roller car running low 10s aint much of a street car wether it sees street miles or not.

.
Never claimed it was...but we are talking about heads and the results. These heads would be very at home on a car that will fit your discription of being a "street car". I agree that most people sell the lt1 head short and give up on it too easy but there are def. gains to be had by upgrading. That being said any heads without the supporting mods and improper combination of parts have the potential to run like crap. That could be a reason you outran cars with the "bigger is better" theory.

And before my last rounds of mods...the car was very much streetable. That solid roller has been driven 100 miles one way to the track..ran the **** out of it...and driven 100 miles home. To me that is a street car. I would say it was just as legal to be on the street as your car I'm sure. Is this mentality the old "if your faster than me you can't be a street car" coming out.

Last edited by 95 Formula; Aug 15, 2007 at 09:25 PM.
Reply
Old Aug 15, 2007 | 09:34 PM
  #32  
96capricemgr's Avatar
11 Second Club
iTrader: (1)
 
Joined: Sep 2004
Posts: 11,975
Likes: 15
Default

I don't mean to come off as "if your faster than me you can't be a street car", but will admit my definition of a street car is relatively concervative. Mine see 10K a year in current trim and the 11.9 runs were 150 miles from home, light duty hitch on the back still sees occasional use.
I am hopeful of finding a little more ET reduction in my car without hurting streetability come fall so I certainly see room for street car and faster to go together.
Reply




All times are GMT -5. The time now is 06:51 PM.

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