1980 L-82 quadrajet tuning?
Thread Starter
8th Gear
Joined: Mar 2018
Posts: 8
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From: Huntsburg Ohio
1980 L-82 quadrajet tuning?
So I've bumped the compression up to 10 to 1 with a set of aluminum heads, and I've installed 1.6 rockers to up the lift just a little.
iI'going to go with bigger manifolds with the 2.5 outlets and a stainless works true dual exhaust.
Deleted the EGR
As far as the carb where should I start with resetting it in an effort to get the most HP?
iI'going to go with bigger manifolds with the 2.5 outlets and a stainless works true dual exhaust.
Deleted the EGR
As far as the carb where should I start with resetting it in an effort to get the most HP?
Melting Slicks
Joined: Dec 2009
Posts: 3,220
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From: Thunder Bay
Back in the day we would take those carbs and remove the plugs over the idle mixture screws so we could set up the idle mixture properly. They were stupid lean from the factory for emission purposes. We would also set the accelerator pump to the second hole to increase the pump shot. Finally raise the float level. I don't remember the exact setting we used. I would do these things at a minimum.
To remove the idle mixture plugs, we would use a die grinder to grind away enough of the plug until there was just the start of a small hole in the plug, then insert a screw. Grab the screw with a pair of vice grips and tap them with a hammer to extract the plug. The factory solution was to use a chisel to take them out by chiseling through the base of the carb. Inelegant to say the least.
To remove the idle mixture plugs, we would use a die grinder to grind away enough of the plug until there was just the start of a small hole in the plug, then insert a screw. Grab the screw with a pair of vice grips and tap them with a hammer to extract the plug. The factory solution was to use a chisel to take them out by chiseling through the base of the carb. Inelegant to say the least.
Had a 1976 L-82, 4-sp
Joined: Mar 2011
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From: Some days your the dog and some days your the hydrant.
Royal Canadian Navy
First thing I would do is nail down your timing curve for the new mods. Then search the forum for "Lars", the resident qj tuning authority.
Melting Slicks
Joined: Dec 2009
Posts: 3,220
Likes: 651
From: Thunder Bay
Hard to set up a carb if the ignition curve isn't set up correctly. Its also relatively easy to do. And there's little you can do that will have the positive effect on power of a properly set up timing curve, certainly not in terms of bang for the buck.
Last edited by drwet; Apr 7, 2018 at 12:23 PM.
Thread Starter
8th Gear
Joined: Mar 2018
Posts: 8
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From: Huntsburg Ohio
Yeah, I got the timing under control.
i am pretty versed in the HEI distributor, but I am not really used to tuning a quadrajet.
This the reason I'm asking about the carb and not the distributor.
i am pretty versed in the HEI distributor, but I am not really used to tuning a quadrajet.
This the reason I'm asking about the carb and not the distributor.
Team Owner
Joined: Jan 2006
Posts: 37,637
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From: Crossville TN
Do yourself a BIG favor and send an e-mail to Lars Grimsrud at V8FastCars@msn.com and ask him that same question. He responds directly to e-mails ONLY...not to requests within a post on this Forum.
