FFT: Oldsmobile Power

This past Saturday has so far been the biggest day for the Futuramic Farm Truck build. It began with the removal of what was left of the 1975 4-bolt 350 that the previous owner had installed, which you can view in this video below:

After we removed the short block, we grabbed everything that came with it; which included the 993 heads, a set of polished, ball-milled cast aluminum MS valve covers, roller rockers, Edlebrock carb and Performer intake, Accel HEI and some long tube headers. We drove it up a couple miles north and ended up at the owner of the 455’s house. The owner, Paul, was a very nice guy and explained the 455’s back story.

It began life as 70-72 engine that the previous owner had removed from an Oldsmobile vehicle and converted for use in a boat. By the time Paul took ownership the boat, the only thing that was left worth saving was the motor and the boat’s trailer (which Paul modified, being a fabricator by trade) Paul then told me that he was holding on to the 455 for another boat – but now wanted to build a 383 – so my virgin-bored four-bolt was perfect for him.

After some more talking and examining of each others engines, we made a clean trade. The small block Chevy 350 that had sat on the cross member of my truck as long as I’ve owned it, now rested on Paul’s vintage Holsum bread cart. Soon after, my Dad and I left with the 455 in the bed of my ’96 C2500 (better known on here as my project daily driver: Valkyrie)

As you can see in the photos, it’s still set up for marine use. A lot of things are going to have to go to make this work for my 1965 C-10 build. I haven’t torn into it (past popping a valve cover) just yet as I’m battling a cold, but what I’ve been able to gather from examining it is that it’s a 70-72 455 (denoted by casting number for 455 and Serif-style “F” casting for 70-72) and that it has the High Output “C” casting heads that were commonly found on the FWD Toronado. Basically, a home run as far as big block Oldsmobile goes.

The crank appears to have been drilled (Factory or later I can’t tell) for use with a manual transmission, but this might very well be a 425 crank for all I know; they are interchangeable. It being drilled is one less thing to worry about as this will eventually have a Muncie or Super T-10 sitting behind it. There’s a mallory dual points distributor, which is very cool. The intake is an Edlebrock Torker and the casting number off the Quadra-Jet carb on top of it tells me it’s off either a 74-75 455 Olds, which is great, because now I don’t have to find a good Q-jet for it. My favorite “aftermarket” piece was the unassuming 350 Buick air cleaner lid on top.

Basically I ended up with exactly what I want for my build and the Marine parts just give me a bargaining token towards getting the parts I need to convert this engine back to street use. Know that I will be going through this engine and scrutinizing every aspect. I will try to document everything I do for our readers whenever possible.

So until then, enjoy the gallery below:


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2 thoughts on “FFT: Oldsmobile Power

  1. Awesome deal on the engine! Can’t wait to see this project come together.

    I still have a ton of info about Quadrajets saved after rebuilding the one on our Monte Carlo last summer. Here is what I came up with for yours (please correct me if you see a mistake):

    7043251 RB 2902

    70 = Rochester Carburetor
    43 = 1973 (Production Year)
    2 = Federal Emissions (49 States)
    5 = Oldsmobile (Division)
    1 = Manual Transmission

    RB was a production code or build sheet code that assembly line workers used to make sure the right carb was put on the right car.

    2902 is the Julian date code for the date of manufacture, which was the 290th day of 1972, or July 28th, 1972.

    This is a 4MC carburetor which has an automatic hot air choke mounted to the carb itself (looks like the choke coil and adjustment cover are missing on yours). It definitely came from a car and was not a marine carb.

    I bought the rebuild kit for our carb from QuadrajetParts.com. Looks like the kit for yours is $28.95. Here is the link: http://quadrajetparts.com/rochester-quadrajet-parts-quadrajet-rebuild-kits-quadrajet-rebuild-kit-fits-1970-cadillac-1973-chevygmc-1966-oldmobile-q4002a-p-554.html

    Let me know when it comes time to tear into it, I would be glad to lend a hand!

    • Sweet, thanks Trevor. I’d love the help and I appreciate you decoding it for me. We should definitely do a rebuild article on it when I get there.

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