85-87 442

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Thread: 455 Swap

  1. #21
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    Quote Originally Posted by 85olds4spd View Post
    455 is the way to go if you can afford to run it.
    Your right if this is your everyday driver, and I dont want to assume but, for most of us these builds are projects that we dont drive everyday. And to those that are doing this with having to make sure its running to make it to work the next morning YOU DA MAN. Just one more thing its not the cheapest to build either, I am finding that out the very hard way.

  2. #22
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    I did a 509ci Cadillac in an 88 Cutlass then into an 87 442. I had a 200-4r built with a billet forward drum/shaft to hold the torque with suspension mods & big drag radials. The overdrive and 2,800 stall but lock up converter along with a Q-jet & reasonable cam made for 17.0 mpg on a three state interstate trip where we traveled at 70 to 75 mpg. If I had a 3 speed I would have been lucky to get 12mpg. Over the 9,000 miles I put on this combo I don't know if I saved enough gas to pay the additional cost of doing a 200-4r over a th400 but I know I did not have to rebuilt the engine from screaming down the highway which was my main goal. I didn't have to buy a driveshaft either as my factroy 200-4r, driveshaft & 8.5 from an 84 Ttype dropped right in. I wanted quarter mile gears and reasonable rpms on the interstate. I don't have a truck and trailer. www.extremeautomatics.com will build one for $1,395 with a year warrenty and guaranteed to 10.90s.

    www.robertpowersmotorsports.com Bob did an Olds 455, 200-4r, working lock up, Q-jet, 3.73 g-body combo that netted 12.3s at 110 & 15 mpg while still sorting it out before being stolen. Duane (sorry don't have the link) with a 455 Olds, OD, lock up & 3.73 has run 12.0s at 111 and gotten 20 mpg highway. It can be done and can be very worth it. But you need it built by an experienced proven builder and you should add the billet forward drum shaft with a 455+. Th400 is great, easiest & cheapest and if you just stop light it locally then its the best bang for the buck and stronger for lots of spray & slicks just depends on your goals & budget.

  3. #23
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    Looks awesome man. I am putting a 455 Olds in my 84 H/O and I am wondering what headers you went with? Thanks

  4. #24
    Administrator 88hurstolds's Avatar
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    I didn't use headers but If I were to Is go with a set of Looks from Dick Miller Racing.
    The only other choice available are Hooker Super Comps but they have to have one tube go over the frame.
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  5. #25
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    Do you still have this car and are you happy with the 455 swap? When you swaped the intake to the performer how much hood clearance did you have? What is the largest air cleaner that will still work?

  6. #26
    Administrator 88hurstolds's Avatar
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    I've since sold the car.
    I don't know anyone that wouldn't be happy with a 455 swap, I stick one in every car I own that isn't stock, it's just like droping in a 350.
    I will never pull a numbers matching motor out of a 442 or a Hurst just to run a 455.

    I addressed the hood clearance in post #11, I used a 2" eBrock air cleaner:
    Quote Originally Posted by 88hurstolds View Post
    The dual snorkel air cleaner even clears the hood, I have heard that this is an issue but that was not the case. However it is an issue with Ebrok intakes and you have to run a 2" drop unit or a super skinny eBrock one like this pictured on my 84 Calais when I first bought it:

    Lightning Rods repair service:CLICK HERE
    Seller Feedback:CLICK HERE
    1988 H/OCA Advisor
    88 H/O #1 of 4
    88 CSC White/Claret - T-tops
    88 H/O Triple Black
    87 442 Black/Gray - T-tops
    85 442 White/Blue - T-tops
    85 442 White/Blue - T-tops
    85 442 White/Claret - T-tops
    85 442 White/Sage
    84 H/O Aero Commemorative #2199 - Sunroof
    83 H/O #2400 Sand Gray - Sunroof
    83 H/O #1607 Sand Gray - T-tops
    83 H/O #727 Maple
    "Keep them Rockets lit!"

  7. #27
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    Thanks for the reply, with the drop base air cleaner how big a fillter can you run? Have you ever run headers in your big block cars?

    Thanks for the reply on the G body forum.

  8. #28
    Administrator 88hurstolds's Avatar
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    I've never ran headers on a 455 nor a drop base aircleaner, shop around, google what others have done with regards to those units and carb application.
    Filter size would be drop depth plus 2"...
    Lightning Rods repair service:CLICK HERE
    Seller Feedback:CLICK HERE
    1988 H/OCA Advisor
    88 H/O #1 of 4
    88 CSC White/Claret - T-tops
    88 H/O Triple Black
    87 442 Black/Gray - T-tops
    85 442 White/Blue - T-tops
    85 442 White/Blue - T-tops
    85 442 White/Claret - T-tops
    85 442 White/Sage
    84 H/O Aero Commemorative #2199 - Sunroof
    83 H/O #2400 Sand Gray - Sunroof
    83 H/O #1607 Sand Gray - T-tops
    83 H/O #727 Maple
    "Keep them Rockets lit!"

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