C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

hmmmm

Thread Tools
 
Search this Thread
 
Old Mar 15, 2023 | 06:16 PM
  #1  
jseremba's Avatar
jseremba
Thread Starter
Drifting
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2013
Posts: 1,451
Likes: 48
Default hmmmm

So I brought my 85 4 plus 3 to a shop. They said it had some problems. And I was better off working on them myself. No worries. But, then they said that given the camshaft I have in the 85 Lunati 212/226 @ 0.50
483/520 112 separation
1.5 rockers483/520 112 separation

1.5 rockers
The car is not going to run correctly because the LSA is going to confuse the ECM. I should consider the Holley system. If they use the GM ECM it will run but not well.
This car has alot of my money
. Another 2 K is a lot.
Frankly I am thinking it is CHEAPER just to pull the cam and go stock.
I really need opinions here. I know I can put a newer ECM in but the repining seems very dificult. I would rather by the Holley than repin.

Thank you all for your help on this.
Reply
Old Mar 15, 2023 | 07:30 PM
  #2  
topfuel67's Avatar
topfuel67
Drifting
Conversation Starter
All Eyes On Me
Photogenic
Photoriffic
 
Joined: Feb 2016
Posts: 1,384
Likes: 339
From: Simi Valley CA
Default

I believe you can tune it yourself. It's old technology but there are tons of sites out there where you can buy hardware and chips to do it yourself. I found this site that the guy running it will burn you a chip. He also has a bunch of links to where to buy stuff to do it yourself. It says LT1 in the URL, but he deals with tbi and tpi too.
lt1pcmtuning.com
Reply
Old Mar 15, 2023 | 07:33 PM
  #3  
jseremba's Avatar
jseremba
Thread Starter
Drifting
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2013
Posts: 1,451
Likes: 48
Default

I'm getting a lot of feedback saying that. I'm going to correct some of what he mentioned. Then go to one of the tuners you guys are mentioning. Thank you
Reply
Old Mar 17, 2023 | 09:58 AM
  #4  
bjankuski's Avatar
bjankuski
Safety Car
20 Year Member
Photogenic
Liked
Top Answer: 1
 
Joined: Sep 2001
Posts: 4,134
Likes: 531
From: Glenbeulah Wi
Default

That cam is not very big, if you raise the idle RPM it will probably run fine. Have someone tune the car for increased idle speed to 750 and see how it works. Also set the minimum idle speed at 700 RPM and you should be fine.
Reply
Old Mar 17, 2023 | 10:05 AM
  #5  
jseremba's Avatar
jseremba
Thread Starter
Drifting
10 Year Member
Liked
Loved
Community Favorite
 
Joined: Feb 2013
Posts: 1,451
Likes: 48
Default

Thank you. I think I am going to address the issues he mentioned. Get it running. I have TunerPro RT software. Download a run and send it to some of the Chip people mentioned on here of FB.
Thank you again
Reply

Get notified of new replies

To hmmmm





All times are GMT -4. The time now is 11:38 AM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE