80 L82 Idle
Le Mans Master
Joined: Oct 2001
Posts: 6,925
Likes: 0
From: Paradise City
Re: 80 L82 Idle (SmokinL82)
Possibly, the L82 is more extreme than the L48 cam, but most of the completely stock cars I've heard sound like sewing machines at idle instead of the potato-potato huge cam cars. I'd say the first thing to check is your idle mixture on the QJet, then check the vaccum lines.
Advanced
Joined: Aug 2003
Posts: 71
Likes: 0
From: Kailua Hawaii
Re: 80 L82 Idle (79Corvette02)
I got a book that claims the L82 idle is about 800 in gear... I have particular concerns about this involving the stock A/C setup... my engine (not an L82 anymore technically) idles fine around 600 or so, but seemed awfully rough after i installed A/C... brought it up to around 800 in gear with compressor engaged and it's quite a bit smoother... makes for an awfully high idle when not in gear and the A/C is off, though... anyway just my situation, hope it helps... :)
Thread Starter
Intermediate
Joined: May 2003
Posts: 42
Likes: 0
From: pittsboro NC
Re: 80 L82 Idle (Viken)
maybe I need to learn how to tune mine then. The car sounds and runs good. But some people said it was too ruff. Thanks for the response!
[Modified by SmokinL82, 6:55 AM 11/20/2003]
[Modified by SmokinL82, 6:55 AM 11/20/2003]
Le Mans Master
Joined: Mar 2002
Posts: 7,456
Likes: 2
From: Coming home from Luckenbach Texas
Re: 80 L82 Idle (SmokinL82)
My '79 L82 was lopy and rough at idle until I swapped out the stock transmission. The factory torque converter must have a very low stall because it really drags down the engine at idle. In any case, the L82 cam makes the engine lope more at idle than the L48.
With regards to A/C, there is supposed to be a throttle solenoid on the carb that increases idle speed when the compressor kicks in.
With regards to A/C, there is supposed to be a throttle solenoid on the carb that increases idle speed when the compressor kicks in.
Advanced
Joined: Aug 2003
Posts: 71
Likes: 0
From: Kailua Hawaii
Re: 80 L82 Idle (page62)
smokin: anytime... :)
page: ah, that sounds like a very sensible thing to have, lol... don't think i have one on my edelbrock, unfortunately... :nonod: but good to know for future reference, thanks...
page: ah, that sounds like a very sensible thing to have, lol... don't think i have one on my edelbrock, unfortunately... :nonod: but good to know for future reference, thanks...
Instructor
Joined: Feb 2003
Posts: 238
Likes: 0
From: Tee Tops off all year FL
Re: 80 L82 Idle (SmokinL82)
My 80 L82 also has a noticable lope at idle, I tuned and adjusted with very little change. I like the lope so I stopped worring about it. As previously mentioned the idle stop solenoid on the 80 kicks in when the AC is selected. This should be adjusted to keep the idle at around 700-800 with the AC on. You can check to see if it is working, you will hear it click and the plunger will extend.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Le Mans Master
Joined: Feb 1999
Posts: 8,351
Likes: 75
From: Tampa Bay FL
Re: 80 L82 Idle (SmokinL82)
I'd suspect either a need for vacuum system or carb refresh. I found that replacement/removal of 20 years of prior ownership mods to vacuum mgmt systems was the final solution.
