Chrysler Lean Burn System

Jeff Lee · 03-20-2009, 01:13 PM

Disable it and you have a useable 360. I remember working on those LB systems at a Tune-Up Masters I worked at. Just junk, just like all mid-'70's vehicles. That is when the feds were cracking down on emmissions for the first time and the engineers didn't have a grasp on how to clean up the engines effectively.
Mark, was this once a low-rider?

Mark Yacavone · 03-20-2009, 01:23 PM

Quote:

Originally Posted by Jeff Lee

Disable it and you have a useable 360. I remember working on those LB systems at a Tune-Up Masters I worked at. Just junk, just like all mid-'70's vehicles. That is when the feds were cracking down on emmissions for the first time and the engineers didn't have a grasp on how to clean up the engines effectively.
Mark, was this once a low-rider?

No, but I could crank down the torsion bars, if you think it'll make it look any better.

Hemiparts · 03-20-2009, 03:37 PM

Mopar Performance pn# p3690426 is a complete ignition kit with the oragne box( or summitt sells a "race"kit that replaces the orange box with a chrome box that will take more rpm) that will fix that problem

Chris DeGidio · 03-20-2009, 07:02 PM

I don't like the newer MP distributor kits,they use what looks like a Mallory dist.Nothing against Mallory,but I like being able to get stuff from a local auto parts store if need be.What I'd do is get rid of the lean burn,and wire in the Mopar system using either a ignition harness from MP(or cut one from a junker) use a reman distributor and a auto parts ignition box.You can always put in the advance springs that MP sells and virtually have the same deal they sold years ago.

The instructions for the lean burn conversion are in the old MP "bibles",But if you need the info I can send it to you.It might be avalable at www.moparaction.com in the tech section too.

John Dinkel · 03-21-2009, 10:00 AM

The Lean Burn had two pick-up coils. One was for starting and the other was the run mode. There was no advance in the distributator, it was controlled by the electronic module that is on the air cleaner.
Get rid of it like the others say. Buy the complete kit. The carb will have to be richened up or replaced. Good luck!

03-20-2009, 01:13 PM	#1
Jeff Lee VIP Member Join Date: Jul 2007 Location: Anthem, Arizona Posts: 2,766 Likes: 0 Liked 3 Times in 3 Posts	Re: Chrysler Lean Burn System Disable it and you have a useable 360. I remember working on those LB systems at a Tune-Up Masters I worked at. Just junk, just like all mid-'70's vehicles. That is when the feds were cracking down on emmissions for the first time and the engineers didn't have a grasp on how to clean up the engines effectively. Mark, was this once a low-rider? __________________ Jeff Lee 7494 D/S '70 AMX

03-20-2009, 03:37 PM	#3
Hemiparts Member Join Date: Mar 2008 Location: Raleigh, N.C Posts: 212 Likes: 0 Liked 0 Times in 0 Posts	Re: Chrysler Lean Burn System Mopar Performance pn# p3690426 is a complete ignition kit with the oragne box( or summitt sells a "race"kit that replaces the orange box with a chrome box that will take more rpm) that will fix that problem

03-20-2009, 07:02 PM	#4
Chris DeGidio Member Join Date: Jun 2007 Posts: 364 Likes: 8 Liked 2 Times in 2 Posts	Re: Chrysler Lean Burn System I don't like the newer MP distributor kits,they use what looks like a Mallory dist.Nothing against Mallory,but I like being able to get stuff from a local auto parts store if need be.What I'd do is get rid of the lean burn,and wire in the Mopar system using either a ignition harness from MP(or cut one from a junker) use a reman distributor and a auto parts ignition box.You can always put in the advance springs that MP sells and virtually have the same deal they sold years ago. The instructions for the lean burn conversion are in the old MP "bibles",But if you need the info I can send it to you.It might be avalable at www.moparaction.com in the tech section too. __________________ Nautilus Racing

03-21-2009, 10:00 AM	#5
John Dinkel Senior Member Join Date: Nov 2005 Location: Pinckney, Michigan Posts: 507 Likes: 399 Liked 263 Times in 68 Posts	Re: Chrysler Lean Burn System The Lean Burn had two pick-up coils. One was for starting and the other was the run mode. There was no advance in the distributator, it was controlled by the electronic module that is on the air cleaner. Get rid of it like the others say. Buy the complete kit. The carb will have to be richened up or replaced. Good luck! __________________ John Dinkel 3295 STK