Buick LeSabre motor swap

Asked by Davin Feb 09, 2018 at 06:23 PM about the 1985 Buick LeSabre

Question type: Maintenance & Repair

I have a 1985 Buick LeSabre and I wanted to know if I
could put a 5.7L v8 from a 93 Roadmaster  into the
LeSabre without having to modify anything crazy

3 Answers
10,210

txbarney answered 6 years ago

It will not be "plug n play" you will have some modifications, don't know where you draw the line on Crazy. 1985 was the last year they made rear drive LeSabres...a V6 was the standard engine but most had a 350 V8. If I was doing it, I would also use the Roadmaster transmission. If you don't I don't know if the Roadmaster V8 will bolt to the LeSabre transmission. The other reason to use the transmission is after 1991 the transmissions were electronic and when you make the swap you MUST use the Roadmaster ECM to run the engine and it also controls the transmission so it make sense to use them together. Don't expect any of the wiring to plug so you need to get the engine harness from the Roadmaster to make the job easier.

1 people found this helpful.
Mark helpful

Davin answered 6 years ago

So if I use the Roadmaster tranny and harness I should be good? By crazy I just mean cuts or welds as I do not possess the necessary tools

Mark helpful

Davin answered 6 years ago

Or what if I am taking it from fuel injection to carbureted would that help at all

Mark helpful

Your Answer:

Related Questions

  • Buick LeSabre motor swap 3 Answers

    I have a 1985 Buick LeSabre and I wanted to know if I could put a 5.7L v8 from a 93 Roadmaster into the LeSabre without having to modify anything crazy

    1985 Buick LeSabre

    -

    Maintenance & Repair

  • Motor swap 3 Answers

    I got a 2000 Buick lesabre limited edition and a 2010 impala. I was wondering can you swap motors. Take the motor out the 2010 impala and put it in the 2000 Buick lesabre

    2000 Buick LeSabre Limited Sedan FWD

    -

    Maintenance & Repair

  • Blower motor 2001 Buick lesabre 1 Answer

    How long does the book say it should take to take out and replace heater and a.c. blower motor

    2001 Buick LeSabre Custom Sedan FWD

    -

    Maintenance & Repair

  • Buick lesabre 2 Answers

    Will a 1992 Buick lesabre motor fit into a 1997 Buick lesabre? What parts can interchange?

    1992 Buick LeSabre Custom Sedan FWD

    -

    Maintenance & Repair

  • 2000 buick lesabre 1 Answer

    Will a 2004 buick lesabre transmission work in a 2000 buick lesabre

    2000 Buick LeSabre Custom Sedan FWD

    -

    Maintenance & Repair

LeSabre

Looking for a Used LeSabre in your area?

CarGurus has thousands of nationwide listings and the tools to find you a great deal.

Postal Code:

Shortcuts

Search Buick LeSabre Questions

CarGurus Experts

  • #1
    John Saffrahn
    Reputation
    4,040
  • #2
    txbarney
    Reputation
    3,170
  • #3
    joes098
    Reputation
    2,700
View All

Find great deals from top-rated dealers

Search

Related Models For Sale

Used Buick Regal
24 listings starting at $6,995
Used Chevrolet Impala
9 Great Deals out of 130 listings starting at $4,888
Used Buick Century
2 listings
Used Mercury Grand Marquis
1 listing
Used Toyota Camry
52 Great Deals out of 1,161 listings starting at $4,594
Used Lincoln Town Car
4 listings starting at $9,995
Used Ford Crown Victoria
2 listings starting at $8,960
Used Cadillac DeVille
5 listings

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use. Content will be removed if CarGurus becomes aware that it violates our policies.