1977 chrysler lebaron lean burn question

i just picked up a 1977 lebaron with the 318 2bbl carb and lean burn ignition.

im getting ready to tear off the lean burn crap but i have a few questions.

i have a mopar electronic ignition conversion kit, but dont know if i can modify the carb on there, or just buy a new one. what should i do? can you also direct me to a part number for a new carb that will work on there?

im used to working on imports, and this is my first domestic... ive seen the light and dont want to go back :)

any advice would be great

also, could you possibly give me some links to look at that might have more info on them about removing the lean burn?

Reply to
crioten
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Does yours still have the big Computer hanging off the air cleaner ?. As I remember the lean burn came with a 4bbl thermoQuad. The factory used to swap a two BBL carb/manifold for the lean burn because it was such a problem. They used a carter BBD style carb. Any 2bbl from a mid 70's 318 should work. I have several 4bbls that will work if you want to change the intake manifold, several NON lean buurn thermoquads & a aftermarket #9636 Cry specific Carter AFB in good shape, also a factory 77 service manual

Reply to
sqdancerLynn

"sqdancerLynn" wrote in news: snipped-for-privacy@localhost.talkaboutautos .com:

Be careful of which carb you get.

When the dealer replaced the LEan burn on my 80 Lebaron 318, he installed one that didn't have a vaccum advance port. Oh the port was there, it just wasn't connected internally in the carb. So while all the hoses looked correct, there was no vaccum. The car ran for two years with no vaccum advance (mostly stayed parked, till I inherited it). The two part numbers where virtually identical, except for the suffix. You will need to change the dist. The Lean burn used an electronic controlled dist. You need a vaccum controlled dist. The dealer at least got the dist right. Using help from posters on this NG, I did get everything working eventually. There is a site with instructions on how to change out the lean burn for conventional. I can't find it right now, you might try to goggle it. I'll see if I can find it later. To start with, try

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Reply to
Nirodac
2 bbl might have been a Rochester model. Also a great source would be
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Dodge Diplomat Farley's Page.

A '77 Chrysler Le Baron would be the same as an 82, 83 2bbl Dodge Diplomat or Chrysler Fifth Avenue. All have the same body style, they are "M bodies".

In California because of very stringent rules about smog modifications such as stripping off lean burn computer would violate state smog rules. Problem is lean burn computers are often faulty and don't do the job properly and you fail sniffer test; though you won't have visual/tampering failures as long as all the hardware is on correctly.

Steve

Nirodac wrote:

Reply to
slpetlak

The modification was legal in Ca per CARB ONLY if done by the dealer, Didn't mention dist because he is already changing it. Had a 77 Aspen Wagon with lean burn system, bought it super cheap in 1990? as a fixer upper Ended up Junking the body. A friend has a 71 Charger special ordered from factory 440/6pk IT wouldn't pass the tailpipe sniffer even when it was brand new. Haven't seen him in 5 years last I knew he still had it. IT had like 40k original miles

Reply to
sqdancerLynn

ok guys thanks for the info, and sorry for my late replys...

~yes, it still has the big computer on the air cleaner, and as far as i know this car is all original, but it could have been changed

~im still a little confused as to exactly what carb to get... could someone tell me if summit racing has the carb i would need, and its part number? i love summit lol

~i dont live in cali, so i dont have to worry about that crap. hell... i dont even have any kind of emissions test :)

thanks again

Reply to
crioten

snipped-for-privacy@yahoo.com wrote in news: snipped-for-privacy@75g2000cwc.googlegroups.com:

My former lean burner 318, now uses a Carter BBD-8292S. Not spectacular performance, but good gas mileage. Manual says you can also use a Carter TQ-9372S or TQ-9364S these are thermoquads.

Beyond that, and from summit, I can't help you.

Reply to
Nirodac

cool, thanks for the info....

where is the best place to get those? id rather order it from the net, so any web sites would be great

thanks again

Reply to
crioten

Back to your original post. Change the dist & install the electronic ign, see how it runs.. I have not see that manny lean burn systems. The one's I have seen & THE 77 factory book diagrams show it as using a 4bbl thermoquad carb IF you indead have a two bbl carb, part of it may have already been eliminated

Reply to
sqdancerLynn

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