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    auto meter tach

    my factory tach pooped the bed and i had to disconect it at the coil it was a grey wire the boat runs a 5.7 . I have a auto meter tach i want to toss in the hole for now any reason this would not work or anything i need to be aware of ?
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    exhaust manifolds needed

    it came to my attention today that my old manifolds have had the bun . the boat is a 81 hammond but someone has put an alpha 1 in it acourding to the serial numbers as Don had informed me of . is it possible to use the 87 and up manifolds and risers ? i was thinking of going to aluminium and...
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    new engine set up questions

    hello finally got the new engine in and started last night for the first time . i had a newer style vortec 350 built 4 bolt mains mechanical fuel pump . specs are 9.3:1 comp cams xtream marine 270 hr .eddlebrock performer and a 600 cfm carb . balanced ect the boat is a 1981 with an updated...
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    want more speed

    1981 hammond challenger , with an alpha one r drive 1.5 ratio, stock 23 pitch cleaver , boat is 21' 2800lbs loaded , with merc 260 hp i was running 60mph gps @ 4700 rpm with this set up . Changes for this year 330hp vortec350 , roller cam, 9.3:1 comp, balanced, rpm range of 1200 to 5200 max...
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    mercruiser f 6340752

    my 81 hammond challenger drive has this stamped on it f 6340752 . one guy says its a number 1 drive and another says its a alpha . i am curious now as i cant seem to figure it out lol . sorry if the answer is posted else where i have looked hi and low . Thanks guys
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    new engine

    i recently had a vortec 355 built its around 9.4:1 comp with a comp cams extreme marine 270 hydraulic roller do you think the cam will be ok as far as reversion goes ?
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    thunder bolt IV upgrade and new engine

    Hello all first post on here . I am in the middle of installing a vortec 350 in my 81 hammond challenger in place of the old 260 hp 350 non vortec . couple questions i am wanting to get rid of the thunderbolt system and go to something like this 5.7L GM Delco Voyager EST marine electronic...
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