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

tuning

Thread Tools
 
Search this Thread
 
Old Dec 27, 2008 | 01:51 PM
  #21  
barney1golf's Avatar
Thread Starter
Teching In
 
Joined: Feb 2007
Posts: 26
Likes: 0
Default

I had a LT1 that was modded. The harder you work the valve train the more friction you make. Then with more friction comes more heat. These engines run hotter at idle anyway, so now you have a cooling issue. I still want a/c and all the goodies so keeping the engine cool in town was always a challenge on a hot summer day. I want to drive the car with little worries as possible. You just open up a new can of worms with more friction. I am probably older than most of you guys (48) I am now more about show than go. That is why I searched for over a year to find this car. It has 35000 miles on it and I have all paper work that was done at dealer from original owner. Every oil change, window sticker, build sheet, copy of invoice from dealer and all. I am just looking for easy horsepower. I don't need much. Tkanks for all input. It has been helpful. Barney
Reply
Old Dec 27, 2008 | 03:12 PM
  #22  
Elliott's94Z's Avatar
Banned
iTrader: (12)
 
Joined: Mar 2008
Posts: 4,370
Likes: 1
From: Oregon Grown
Default

Originally Posted by Formula350
I ask in earnest, why would you have to pull the motor? Sure, you'd need some room in front, like having the radiator out, but on other vehicles I've heard of people doing cam bearings with it inside the car. That and pulling the motor out isn't all that much work for some people, so for the extra peace of mind that the bearings won't take a crap later on, it's not a huge deal heh
You should start up a poll and see how many people actually changed out the bearings during their cam or heads/cam swap

Have you changed these out before?
Reply
Old Dec 27, 2008 | 03:59 PM
  #23  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

Originally Posted by barney1golf
I had a LT1 that was modded. The harder you work the valve train the more friction you make. Then with more friction comes more heat. These engines run hotter at idle anyway, so now you have a cooling issue. I still want a/c and all the goodies so keeping the engine cool in town was always a challenge on a hot summer day. I want to drive the car with little worries as possible. You just open up a new can of worms with more friction. I am probably older than most of you guys (48) I am now more about show than go. That is why I searched for over a year to find this car. It has 35000 miles on it and I have all paper work that was done at dealer from original owner. Every oil change, window sticker, build sheet, copy of invoice from dealer and all. I am just looking for easy horsepower. I don't need much. Tkanks for all input. It has been helpful. Barney
You're not going to be making allll that much more friction from a cammed setup vs stock. Theoretically speaking, it should actually run the same temp or even cooler. Why? You're upping the volumetric efficiency of the motor allowing it to run, well heh, more efficiently! And having a CAI + full exhaust means it breathes better to get the hot gas away from the motor. Throw in a 160º TStat, a lower fan setting and you're running cooler already. I have yet to install my TStat, and I apparently didn't even set the fans low enough, yet with JUST the fans being tuned down, I run 30ºF COOLER!! ~188ºF driving and 195-199ºF in town/stop-and-go. You could also get a higher capacity oil pan and a high volume pump to help cool the motor more as well. And while I'm sure you're a very knowledgeable gear head, age doesn't denote intelligence/experience/knowledge. I'm sure you can agree on that much Again, I'm not trying to insult you in any way.



Originally Posted by Elliott's94Z
You should start up a poll and see how many people actually changed out the bearings during their cam or heads/cam swap

Have you changed these out before?
No, I have not, but my friend has. It was in a truck though As for the bearing change, I'm sure 90% (I feel that a bit high though) don't. Yet if I were to do one, and my motor had over 80K on it, I would for sure do a change! My motor has been freshened up at some point in it's life though, so it most likely doesn't have the 96K my car does, so I most likely wouldn't do it if I ever cammed my car

You're welcome to make a poll though heh You'd have to poll the Gen III+ section too, but I doubt any of them had heh
Reply
Old Dec 27, 2008 | 04:01 PM
  #24  
Green3spd's Avatar
TECH Fanatic
iTrader: (7)
 
Joined: Oct 2007
Posts: 1,177
Likes: 1
From: Little Rock, Ar
Default

Originally Posted by barney1golf
I had a LT1 that was modded. The harder you work the valve train the more friction you make. Then with more friction comes more heat. These engines run hotter at idle anyway, so now you have a cooling issue. I still want a/c and all the goodies so keeping the engine cool in town was always a challenge on a hot summer day. I want to drive the car with little worries as possible. You just open up a new can of worms with more friction. I am probably older than most of you guys (48) I am now more about show than go. That is why I searched for over a year to find this car. It has 35000 miles on it and I have all paper work that was done at dealer from original owner. Every oil change, window sticker, build sheet, copy of invoice from dealer and all. I am just looking for easy horsepower. I don't need much. Tkanks for all input. It has been helpful. Barney
Well I understand what your saying.. when I got my car it was very clean(the cleanst ive owned) and said "im not modding this car"...
Well I dont plan on goin too extensive with it, but I added headers, adding them really woke the car up! I couldnt believe the difference it made in the sound and the power! I went with LT headers BUT I agree with the Mac Mids considering emmisons..

But a tune will ALWAYS help, just make sure your NOT goin add anymore mods or you will have to go back and re-tune it...
Reply
Old Dec 27, 2008 | 06:26 PM
  #25  
Elliott's94Z's Avatar
Banned
iTrader: (12)
 
Joined: Mar 2008
Posts: 4,370
Likes: 1
From: Oregon Grown
Default

Formula...

Well a trucks a whole different thing...prob a lot more room to get to them in the back. A friend of mine that has built plenty of LTx engines has ran two different cams in his LTx problem free with the stock bearings w/ over 100k on the motor. About 95% of the engines he has built for his customers they have not specified changing out any of the bearings nor has he had a call back with issues regarding them. I would say, "90%" is a little on the high side as far as how many of us folks actually swap them out with new ones. Prob closer to 70-75% if that. He did say changing the bearings in the back is something that really needs to be done with the motor out. If you can pull changing them out with it in the car BIG props to you man
Reply
Old Dec 28, 2008 | 08:08 AM
  #26  
multmigs's Avatar
TECH Regular
iTrader: (2)
 
Joined: Oct 2003
Posts: 412
Likes: 0
From: valley forge PA
Default Just a thought

I know everyone will hate this but why not get a used handheld tuner like HPP and just play with the "tune" urself for a bit before you decide if you want to do anything else, sounds like you are concerned about wrecking a low mile nice SS so that might be the way to go 4 U... You can adjust the tune for what Octane gas, RPM limiter, fan turn on temp, lots of little stuff, and then with a press of the button you can go back to stock settings too....
Reply
Old Dec 28, 2008 | 09:10 AM
  #27  
barney1golf's Avatar
Thread Starter
Teching In
 
Joined: Feb 2007
Posts: 26
Likes: 0
Default

its not about wrecking, its about reliability. I just want to do a couple of bolt on mods and I don,t know whether to spend 450 for a custom tune. I am thinking I will, I think it will run better when I get done.
Reply
Old Dec 28, 2008 | 09:41 AM
  #28  
Bowtie4life's Avatar
Launching!
iTrader: (7)
 
Joined: Jan 2008
Posts: 275
Likes: 0
From: St. Cloud FL
Default

450?, pcmforless and madz28 are both under 200, I'm trying to decide one which one to go with.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

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

 Pouria Savadkouei
story-2

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

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

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

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Dec 28, 2008 | 10:12 AM
  #29  
barney1golf's Avatar
Thread Starter
Teching In
 
Joined: Feb 2007
Posts: 26
Likes: 0
Default

This is from a guy that used to work for Callaway. He writes his own tune. I have seen his work and he is good. Well worth it, I just was checking if it would be good on only a couple of mods.
Reply
Old Dec 28, 2008 | 10:20 AM
  #30  
Bowtie4life's Avatar
Launching!
iTrader: (7)
 
Joined: Jan 2008
Posts: 275
Likes: 0
From: St. Cloud FL
Default

ok, gotcha, and you had also said dyno tune too, I'm an idiot, don't mind me
Reply
Old Dec 28, 2008 | 01:17 PM
  #31  
Formula350's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Oct 2006
Posts: 7,564
Likes: 4
From: Decatur, TN (N-W of Athens)
Default

Originally Posted by Elliott's94Z
Formula...

Well a trucks a whole different thing...prob a lot more room to get to them in the back. A friend of mine that has built plenty of LTx engines has ran two different cams in his LTx problem free with the stock bearings w/ over 100k on the motor. About 95% of the engines he has built for his customers they have not specified changing out any of the bearings nor has he had a call back with issues regarding them. I would say, "90%" is a little on the high side as far as how many of us folks actually swap them out with new ones. Prob closer to 70-75% if that. He did say changing the bearings in the back is something that really needs to be done with the motor out. If you can pull changing them out with it in the car BIG props to you man
Well yea, I know the trucks have tons more room. He removed the grill to aid in that But if you can get a cam in w/o removing it, I don't think doing bearings is a HUGE feat, is it? Dunno, oh well It's good to hear they last a long time
Reply
Old Dec 28, 2008 | 01:36 PM
  #32  
Elliott's94Z's Avatar
Banned
iTrader: (12)
 
Joined: Mar 2008
Posts: 4,370
Likes: 1
From: Oregon Grown
Default

Originally Posted by Formula350
Well yea, I know the trucks have tons more room. He removed the grill to aid in that But if you can get a cam in w/o removing it, I don't think doing bearings is a HUGE feat, is it? Dunno, oh well It's good to hear they last a long time
Lets hope they do The front bearing takes most of the wear and that's the one to change while the motors in the car, if ya were to change any
Reply




All times are GMT -5. The time now is 01:10 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