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Originally Posted by airjunky
(Post 4498869)
I would try to replicate the merc 377 build, that boat wont be happy with a cammy engine. Especially if you put 5 people in it . And if you still have the fiberglass "arch" that happens to have a tow hook built in up there .
Can I get an explanation for Cammy Engine, and what would be better? |
[IMG]https://s15.postimg.org/v17muddnb/sbc_014.jpg[/IMG]
[IMG]https://s3.postimg.org/vlphhmf3z/sbc_010.jpg[/IMG] [IMG]https://s18.postimg.org/6b3oq3r51/029.jpg[/IMG] [IMG]https://s11.postimg.org/drdpo35gf/028.jpg[/IMG] |
well, I read a lot lately and came to the conclusion that it would better suit XM 270 H camshaft, but the majority are 350 engines, what I have 500 cui more
camquest calculator says that the ideal grind 280, 270 is in the third place I realize that 270 begins to charge earlier, but I already have a 280 grind ... any input from you experienced in boating .. some explanation in behavior 3000lbs heavy rig with one or another cam |
That motor looks a little on the rough side, if it was me i would try to find a manual trans vortec 5.7 truck motor ,with the flywheel , have your guy toss a $250 ht383 cam in it a cheap aftermarket vortec aluminum intake , some new oem or better valves . then put some money aside for props, a dedicated prop tool and some extra washers and prop nuts .
And dont forget to relocate the battery or batteries up front. And take all the dings out of the bottom of the hull if there is any . That motor may of seen some salt. The more weight you can get out of the back of that particular hull the better |
Wait a minute here , are you thinking about putting a old school small block 400 in that thing?
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well, this engine was already and worked in this boat, with this camshaft,head combo
I managed to get to the guy who was driving and do servicing on this boat, says that he went as f1 yea, this is a old 400,overbored .020 and now I must drill more .020 to 4.165 ,put some new flattops,shave a head to raise compresion,shave a block to get zero deck |
not too many answers and I'm full of questions
Can I replace Alpha with Bravo 1 without additional complications? x dimension is it the same? |
Stick with the alpha , your never going to pull bafefoot skiiers with that boat anyway.
If it really starts turning into a no holds barred all out boat, go with a volvo penta duoprop. |
And most people on this earth have never been within 500 feet of a sbc 400 manual trans flywheel. And now you have aftermarket pistons. Better make sure that motor is going to have the correct balance before ya put it back in .
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Originally Posted by airjunky
(Post 4509890)
And most people on this earth have never been within 500 feet of a sbc 400 manual trans flywheel. And now you have aftermarket pistons. Better make sure that motor is going to have the correct balance before ya put it back in .
all suggest that alpha is too weak for more than 300PS Why I will not be able to pull skiers? What is problematic with 400 flywell? please a little more explanation, facts This engine has an external balancer I found this application in several projects I found here in Croatia bravo 1 complete with transom, pumps, cylinders, stainless steel prop for $ 3,000 minus my alpha $ 1,000 = $ 2,000 man says low hours, 25 w / h http://www.njuskalo.hr/unutarnji-bro...oglas-20301182 volvo duoprop,or bravo 3 is to expensive here I heard that love brake Need help, advice, encouragement the easiest way to buy a new Mercruiser and drive, and plug and play I like a bit of chemistry, as we say here. this is my hobby, and I love to revive old ships,old problematic engine |
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