css19

yes,i have arch,do you think that this cam is not good for skiing and towing tube?
Can I get an explanation for Cammy Engine, and what would be better?

css19

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css19

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

airjunky

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

airjunky

Wait a minute here , are you thinking about putting a old school small block 400 in that thing?

css19

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

css19

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?

airjunky

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.

airjunky

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 .

css19

come on, you're just talking and not talking about why this is so
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