Selling Olds 403 build - feelers for price?

Discussion in 'General Discussion' started by Anubis, Jun 11, 2018.

  1. Anubis

    Anubis Royal Smart Person

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    Fellow Oldsmobile enthusiasts, I am considering selling the moderately built Oldsmobile 403 long block from my 1986 442. After the LS swap I hung onto it in hopes of finding a good roller but that isn't happening anytime soon. I am now considering selling it on Craigslist or the Homecoming show in Lansing. I realize I will not get my initial investment back but looking for your thoughts on a fair asking price. Here are the details. What do you think?

    Pulled out of my car in running condition for fuel injected motor - LS swap.
    1979 Trans am Olds 403 with under 5K miles after rebuild
    Hot tanked, line bored, .030" cylinder overbore
    TRW forged pistons (9.6 : 1 compression ratio with #5 heads)
    Melling high volume oil pump
    MSD HEI with custom distributor curve
    Nice 800 cfm Q-jet with big secondary rods and primaries. Throttle shaft is tight.
    Competition cams (have specs somewhere - moderate cam lope)
    Comp roller tip valve train
    Edelbrock performer intake
    Around 2014 I added 1968 #5 heads with 455 stainless valves, bowl port and polish.
    Exhaust dividers welded for headers. Over $1200 invested in heads alone.

    Before putting in another car I would install a new rear seal.
    Compression is good but there is slight scoring in 2 cylinders that I will clean up with a drill hone.
    There is no step at the top of the cylinder wall.


    I've had this car at the track only a few times. Best time was 13.1 @ 3860 lbs at the time.
    Even with the lopey cam this engine produces a lot of low end torque. Smoke the tires at will without power braking as shown in the video.

     
  2. Anubis

    Anubis Royal Smart Person

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  3. DROLDS84

    DROLDS84 Greasemonkey

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    You should hold onto it...you'll never get what you want out of it.What do you feel it is worth?
     
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  4. fleming442

    fleming442 Comic Book Super Hero

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    I didn't want to low ball you. I think $2-3k would be fair....
     
  5. My86R3gal

    My86R3gal Apprentice

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    I’d concur with 2-2.5k

    Edited
    I misread it, I thought he was selling an entire car not just the motor
     
    #5 My86R3gal, Jun 12, 2018
    Last edited: Jun 12, 2018
  6. ck80

    ck80 G-Body Guru

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    My mind puts it at 2500-3000.

    If you wanted to sell it I'd recommend transamcountry.

    It takes 25 or 50 posts to get it their classifieds, but, a built 403 is a drop in right up their alley. And they aren't as cheap as a lot of cutlass/regal owners.
     
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  7. 403Olds

    403Olds Master Mechanic

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    That’s an impressive build, my 403 is similar in build, no idea what it’s worth, I’d agree at the 2-3k price. Just out of curiosity, how’s the ls compare in performance?
     
  8. 565bbchevy

    565bbchevy Geezer

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    I am curious with only 5,000 miles on a rebuild why is there scoring on 2 cylinder walls and did you tear it down to discover this?
     
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  9. oldsmobile joe

    oldsmobile joe G-Body Guru

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    hey now, i resemble that. lol but lets not point out the obvious.

    however, i agree, the more you advertise it, the greater the chance of selling it.
     
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  10. Anubis

    Anubis Royal Smart Person

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    Good question. I noticed it when I put the #5 heads on it. The machine shop that did the rebuild on the reciprocating assembly didn't provide adequate clearance for the forged TRW pistons. This caused slight scoring on the cylinder wall in 2 cylinders. I've been running it this way for years with no ill effects. The low mileage is due to the fact that the car doesn't get driven much. Typically 3-4 weeks out of the year to car shows and the beach.
     
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