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8.1 vs New 6.2 550 HP supercharged

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  • 8.1 vs New 6.2 550 HP supercharged

    Hi everyone new to the forum
    I want to know if i should go with a GM Marine 8.1 levator motor or the new 6.2 550 HP supercharged all aluminum block 20 ft boat will be hauling lot of weight.

    Any body know about the 632 GM putting out 750 HP and what that going for price wise

    Thanks roud:

  • #2
    Me I Would Use The 8.1 If You Can Find One With Out Getting Bent Over. They Have Lots Of Low End Torque, The All Aluminum Block Motors Are Hard To Get The Engine Temp Up They Tend To Run Cool And If You Over Heat Them, Thats Another Story

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    • #3
      look up GTO Airboats. they are selling mas motors with two year warranty. talk to Kieth at GTO. before you buy anything run it by skip olsen on this forum. hes been in a couple of rodeos before!!!!

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      • #4
        I donít have an answer for you, what I do know is the best engine for any airboat is one that is design for airboating by some one who builds airboat engines. Go to the web site Southern airboat and looked up all the information on Felber he is consider the best engine builder for big blocks. Heís not cheep.

        Donít just look @ 550hp or 750hp look at everything prop, reducer ratios, size of boat, and what you want the boat to do.

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        • #5
          Timber, The PCM 8.1 was awesome. The L92 Mast Motor is awesome it's 550H.P. but it's not supercharged.
          We have 4 8.1's left in house but not really wanting to sell them to be honest. They are good as Gold Bars! :-)

          I would be happy to give you engine advice any time at 409-920-0716. We have engines with 1 and 2 year warranty's. I would not reccommend the 632 at all from GM. We have blown up several of GM's 572's also they don't seem to hold up.
          Please call me I can save you money.
          Faron Floyd
          Vice President
          American Airboat Corp
          airboatcapt2@aol.com
          409-920-0716 Cell
          1-800-241-6390 Office
          www.americanairboats.com
          "The Quality Remains long after the Price is Forgotten!

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          • #6
            Fuel consumption

            Thanks for the replys
            What can I expect for fuel consumption with the 8.1 on a 20 ft boat loaded with 2500 lbs full throttle
            Also just going fishing with the family of 4 with gear tent ect at say just cruising

            Thanks :question:

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            • #7
              Just curious, who is making 8.1 blocks since GM discontinued them?

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              • #8
                Originally posted by Airboatcapt2 View Post
                We have 4 8.1's left in house but not really wanting to sell them to be honest. They are good as Gold Bars! :-)
                Man ,I'll have to raise the price of my boat :-)
                PEOPLE SAY I HAVE A.D.D I DON'T UNDERSTA.....OH LOOK A MOOSE !!!

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