Re: How Fast, Y2k,staggered Big Blocks.
 

how reliable would those 383's be? easy for anybody to work on them?

Re: How Fast, Y2k,staggered Big Blocks.
 

A 350 bored and stroked to 383 is the most common stroker motor built.
The Merc 320HP 6.2 (377) is a 5.7 (350) with the 3.75 stroke crank.
GM Performance Parts sells a 425HP 383cube with aluminum heads for like $5000. It makes the same HP and Torque as the 454HO...
Small Block Chevys have more after market parts available than all other engines combined. This fact makes building up a small block a lot less costly than a big block.
I bought my boat without power and was considering going with a stroker small block. Then I got a deal on a 310HP/7.4 Volvo Penta that was too good to pass up. Then I was kicking myself when I started buy parts to build up my 454. Twice the $$ for big block parts vs. small block parts.
JMK has the Merc 320HP 6.2 in his 24' Super and kicked my butt until I re-powered with a 502.
It is my opinion, that if you want twins in a 30' Super, stroker small blocks are the way to go... :drink:

Re: How Fast, Y2k,staggered Big Blocks.
 

You know the big deal with a Y2K is having a 30' boat that can blow almost anything away with a single in this size range. That's what amazes people. Not another 30'er with twins. :cool:

Re: How Fast, Y2k,staggered Big Blocks.
 

with the small block, then, you dont need to stagger (but you could). But for a guy who knows next to nothing abuot engines, is this the thing to get involved with if you want hassle free, dependable engines?

Re: How Fast, Y2k,staggered Big Blocks.
 

Aside from the "it's got a big block" aspect, I've struggled with why not to use a 383 for 450hp and below applications. Like you said, parts, upgrades, etc. cost roughly 1/2 that of a big block. Added bonus is higher rpms for a given piston speed.

Re: How Fast, Y2k,staggered Big Blocks.
 

Yeah, but 801 hp has gotta cost an arm and a leg if youdont know what youre doing with engines, like me.

Re: How Fast, Y2k,staggered Big Blocks.
 

Hey Faster,
I do agree with your statement. But this thread is about twins... :cool:
Maybe we should start a Pole or thread, " What to Power a 30' Y2k Superboat with?"... :drink:

Re: How Fast, Y2k,staggered Big Blocks.
 

Anyone else read the new Family and Performance Boating magazine article about the IMCO splitter drive mounted in a 35' Nortic? Single 1400hp Teague engine driving two outdrives. Also running a very, very high x dimension according to the article. Novel set up even if it might be that much better than twins. Should be lighter than twin small blocks, but probably not by much.

Re: How Fast, Y2k,staggered Big Blocks.
 

I think Fasters engine is going to last a lot longer than his Bravo XR drive... :eek:

Re: How Fast, Y2k,staggered Big Blocks.
 

Uh Huhh :D