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Thread: which exhaust is better for blown 1000hp?

  1. #1
    badbug
    on a 1000 hp blown gas stern drive boat, which exhaust system would make the most torque and horsepower? iMCO POWERFLOW PLUS or basset 2 1/4 in. double wall water jacketed tubes with the longer runners? Also wouldnt the imco be a lot lighter? thanks gary

  2. #2
    MAXIMUS
    Yea the imco's are pretty light in reality! The headers would look much better! Is the inside tube actually a 2 1/4 diameter?

  3. #3
    Prime 8780
    The IMCO's would work quite well. We run them on
    our race boat's. Also you might want to look into some CMI's.
    They have a few different styles to choose from.
    Mike
    Prime Marine
    (909) 484-8338

  4. #4
    badbug
    Paul Basset said he would build me a set with 2 3/8ths id for around $4000 . Can't afford that right now. He said the od would be 3 inches with 4 1/2 inch collectors.

  5. #5
    copperrat20
    Paul Basset said he would build me a set with 2 3/8ths id for around $4000 . Can't afford that right now. He said the od would be 3 inches with 4 1/2 inch collectors.
    Holy Chit! I had a guy out in elsinore build me a custom set with 2 1/4 id that were water jacketed and the whole shabang for $1100. That was plain of course. Then I took them to embee coatings in santa ana and had them ceramic coated for around $400. Oh yeah my headers are 4 piece. 2 headers and 2 elbows. 5 inch collectors that flow down to 4 inch thru transom tips. My business happens to be strickly exhaust gaskets also so I get guys calling me all the time to try products out or to wholesale to them for their headers. PM me if you want some numbers.

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