1984 Coupe DeVille Engine Swap! - Page 2
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RWD 19xx-1984 DeVille and Fleetwood,
1985-1996 Fleetwood and Brougham Forum Discussion, 1984 Coupe DeVille Engine Swap! in Past Cadillac Vehicle Discussion; Originally Posted by sven914 I like the colors, but Rocket Motors are supposed to be green and gold... Ah, I ...
  1. #16
    greencadillacmatt's Avatar
    greencadillacmatt is offline Cadillac Owners Connoisseur
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    Re: 1984 Coupe DeVille Engine Swap!

    Quote Originally Posted by sven914 View Post
    I like the colors, but Rocket Motors are supposed to be green and gold...
    Ah, I knew someone would ask about the colors. They stopped painting the Olds engines gold in '74, I think. The '75 and '76 engines were just plain GM Corprate Blue. I figured that since mine is mostly stock but with a hot cam and valvetrain, it was like a stock+ engine. Back in the day the gold only went on the more powerful engines. So I gave it the gold, because now it will have some more oomph.

  2. #17
    77CDV's Avatar
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    Re: 1984 Coupe DeVille Engine Swap!

    I think it looks great! You can do mine next!

  3. #18
    greencadillacmatt's Avatar
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    Re: 1984 Coupe DeVille Engine Swap!

    ^Well, if you'd like to lug the thing all the way down to Florida this summer I could probably make that happen!

  4. #19
    77CDV's Avatar
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    Re: 1984 Coupe DeVille Engine Swap!

    Think it would work as a carry-on?

  5. #20
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    jayoldschool is offline GM RWD V8 addict
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    Re: 1984 Coupe DeVille Engine Swap!

    Oooo that looks purty. You are going to make Sam pull out his 500 and paint it blue...

    Let's hear about the cam and valvetrain!

  6. #21
    outsider is online now Cadillac Owners Connoisseur
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    Re: 1984 Coupe DeVille Engine Swap!

    Wanna do my 472 after 77CDV's engine?

  7. #22
    Bro-Ham's Avatar
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    Re: 1984 Coupe DeVille Engine Swap!

    gcmatt, You're doing a good thing by giving your car the life it deserves. Someone could make a business out of creating a kit to swap out all those HT4100's and put in a viable engine. There were lots of attractive cars made by Cadillac which were afflicted by the HT4100 and I'm sure too many of them were dragged off to the crusher despite the car being nice but the engine being bad. Matt - bravo to you!

  8. #23
    csbuckn is online now Cadillac Owners Master
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    Re: 1984 Coupe DeVille Engine Swap!

    That is a nice color combo.

  9. #24
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    Re: 1984 Coupe DeVille Engine Swap!

    Thanks for all the compliments guys! I thought the paint turned out pretty good. I didn't get a whole lot done today, I had work and whatnot. Tomorrow, however, will be a different story. I'm going to pull the driveshaft and start swapping the accessories over from my 307 parts engine. Sunday will be the big day, the day that the HT4100 decides to leave home and go on it's merry way.

    Quote Originally Posted by jayoldschool View Post
    Let's hear about the cam and valvetrain!
    Since I'm not all that good with cam specs and that sort of thing, I asked my teacher when I built the thing what he would recommend as far as the cam went. He recommended a Comp-Cams K-Kit. I called up Comp and got a rundown on how that kit would run (powerband wise) and was pleased to find that it would work from just off idle to about 5000 RPM! Aaaaand it would have a nice torqey pull to it. (I like torque. )

    The K-Kits come with everything you need for the timing and valvetrain (assuming your valves are still good). I got a timing chain and gears, the cam itself, lifters, valvesprings, guides, and keepers. It was pretty inclusive.

    Since my engine only had (has?) 54,000 miles on it when I got it, I only had to lap the valves. It was so fresh inside that there was even factory cross-hatching still left on the cylinder walls! I rebuilt the heads and put in the higher-tension valvesprings (I can't remember what they are rated at) and put in all the new timing and valvetrain goodies.

    So, since you wanted to know what the cam specs are, here is what I got off the cam box about 20 minutes ago:

    Advance Duration: Int. 256, Ext. 268
    Duration at .050: Int. 212, Ext. 218
    Valve Lift: Int. .453, Ext. .456
    Lobe Separation: 110.0

    There you have it, the specs (more or less) on my cam and valvetrain. I hope this has been helpful.

  10. #25
    The-Dullahan is offline Cadillac Owners Master
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    Re: 1984 Coupe DeVille Engine Swap!

    Quote Originally Posted by greencadillacmatt View Post
    ^Well, if you'd like to lug the thing all the way down to Florida this summer I could probably make that happen!
    Don't say that or I'm going to make you do mine!

    I'd love to do the work myself when I get the cash for an engine, but I lack the basic essentials, such as a garage or any tools to move/manipulate heavy engine blocks. Bet I can lift one myself though...

    Don't mock the colors, look at it next to the original engine! I think it looks better than THAT...

    I'd keep mine black myself, when and if I get the engine work done on mine, the entire engine bay will most likely all be black, just to be a putz I can even paint the coolant reservoir and relive the days of it being all cloudy and having to probe it to determine where the fluid was...

    Also...you call that a Garage? Where's the Guinness?

  11. #26
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    Re: 1984 Coupe DeVille Engine Swap!

    ^Hey, get your engine bay de-greased and maybe we can play artist with it this summer! And seriously, don't try and move one of those engines by yourself, it took two of us guys at the college to move just the BARE block of mine, and both of us were hurting for a week after that. Should have used the hoist. As for the Guinness, um, uh, elsewhere?

  12. #27
    outsider is online now Cadillac Owners Connoisseur
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    Re: 1984 Coupe DeVille Engine Swap!

    trust me, you can not lift one of these engines. You can move it a little (slide or roll) but you will not be able to pick it up or move it very far...

    for proof, see my 1969 calais thread, that tractor even had a hard time lifting the enigne.

  13. #28
    The-Dullahan is offline Cadillac Owners Master
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    Re: 1984 Coupe DeVille Engine Swap!

    Oh, I don't actually expect to be able to lift one, but I would spend an hour or two trying, had I the chance. It only weighs three-or-four times what I do...

  14. #29
    Bro-Ham's Avatar
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    Re: 1984 Coupe DeVille Engine Swap!

    I took out the heads (I should say my mechanic did it ) on a 75 Electra with a 455 that I owned several years ago and brought it to the machine shop - back breakingly heavy! Those old iron engines last forever for a reason. Go Matt! I'll have a Guinness for you tonight to cheer you on.

  15. #30
    greencadillacmatt's Avatar
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    Re: 1984 Coupe DeVille Engine Swap!

    Gah, not a whole lot of progress today. I can't get my driveshaft to come out. My uncle is coming over tomorrow to help pull the engine and trans, and he said we can get the driveshaft out then too. I'll update with pics tomorrow.

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