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Need more power.... thoughts?
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j-roc



Joined: 26 Feb 2011
Posts: 53

PostPosted: Sat May 11, 2013 11:37 pm    Post subject: Need more power.... thoughts? Reply with quote

Hi all. I run a 19 foot Alberta Special (from what I understand, basically a Nahanni) with a Berkeley pump and 4.3 v6.

I love the fact that I can run regular fuel, but want more power.

I've been really thinking of going with either a zz4, or 383. What's a realistic speed with this boat? I run about 42 mph at 32- 3400 Ish rpm with an A right now. Not looking for a speed demon, but more speed/ power would help.

What should I be looking at for an engine package that will live a while on regular fuel? (Crate or built?)

Thanks guys
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Arthur
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Joined: 28 Oct 2006
Posts: 1654
Location: On the rocks

PostPosted: Sun May 12, 2013 6:35 am    Post subject: Reply with quote

Can't go wrong with either crate engine....
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sandman



Joined: 15 Jun 2005
Posts: 260
Location: The captains table

PostPosted: Mon May 13, 2013 9:43 am    Post subject: Reply with quote

J-Roc,
Go with the 383. It is a great engine for either Berkely style or Hamilton pumps.
It has good grunt so you can run a AA impeller, get decent speed, lift good loads and not have to rev the snot out of it!
I have seen some 383's with respectable fuel economy, near 6.5 to 7 GPH. Try a race nozzle if you can!

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Will R



Joined: 31 Jul 2005
Posts: 677
Location: NWT/Alberta

PostPosted: Mon May 13, 2013 11:03 am    Post subject: Reply with quote

Agreed there sandman and isnt the 383 a little less compression aswell being a little more friendly on the type of fuel you run. Ive had really good luck with the 383s ive run and would go ad far to say that the are better on fuel than the 350.
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j-roc



Joined: 26 Feb 2011
Posts: 53

PostPosted: Mon May 13, 2013 2:15 pm    Post subject: Reply with quote

Thanks so much for the awesome replies guys! Its amazing the wealth of knowledge that people are willing to share! Should a guy just go with a gmpp zz383? Thoughts on what to run for carb/ distributor, manifolds, etc and where to get them?

Any place for good pricing on gm crate engines?

Thanks again guys
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REPO



Joined: 09 Sep 2011
Posts: 179

PostPosted: Tue May 14, 2013 8:29 am    Post subject: Reply with quote

j-roc wrote:


Any place for good pricing on gm crate engines?


From all the different types of crate engine I have ever purchased, you need to call as many GM dealers as you can. I was surprised at how much the price could vary between them. It appears they can mark them up to whatever they want?
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snoflake



Joined: 10 Jul 2012
Posts: 18
Location: Red Deer

PostPosted: Tue May 14, 2013 10:02 am    Post subject: Reply with quote

Call Doug at southgate in Edmonton. He is boat savey, and awesome to deal with. 1 877 435 4040.
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j-roc



Joined: 26 Feb 2011
Posts: 53

PostPosted: Tue May 14, 2013 11:16 am    Post subject: Reply with quote

snoflake wrote:
Call Doug at southgate in Edmonton. He is boat savey, and awesome to deal with. 1 877 435 4040.


You're not kidding! Wow! Super helpful!!!!

Thanks!
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Chrisco



Joined: 12 Apr 2013
Posts: 32
Location: Stony plain

PostPosted: Tue May 14, 2013 11:19 am    Post subject: Reply with quote

So.... what 383 would one go gm has 3 different ones. looks the the 383HT 370HP 435TQ or the ZZ 425HP 449TQ If you look at the specs the HT looks to be suited for a river boat or a bigger boat for pleasure use.

But I don't know....anyone...
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REPO



Joined: 09 Sep 2011
Posts: 179

PostPosted: Tue May 14, 2013 12:04 pm    Post subject: Reply with quote

As in almost everything, more is better. More HP, more TQ
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Arthur
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Joined: 28 Oct 2006
Posts: 1654
Location: On the rocks

PostPosted: Tue May 14, 2013 12:25 pm    Post subject: Reply with quote

ZZ383/425HP
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Chrisco



Joined: 12 Apr 2013
Posts: 32
Location: Stony plain

PostPosted: Tue May 14, 2013 12:31 pm    Post subject: Reply with quote

I thought for a pleasure boat the HT 383 makes 400 TQ from 2500 rpm to peak 435 tq at 4000 rpm not as high strung as the ZZ.
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Arthur
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Joined: 28 Oct 2006
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PostPosted: Tue May 14, 2013 12:38 pm    Post subject: Reply with quote

Mine had a 425HP ZZ...ran strong and very reliable
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Chrisco



Joined: 12 Apr 2013
Posts: 32
Location: Stony plain

PostPosted: Tue May 14, 2013 1:51 pm    Post subject: Reply with quote

Arthur wrote:
Mine had a 425HP ZZ...ran strong and very reliable


What boat was it in.
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Arthur
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Joined: 28 Oct 2006
Posts: 1654
Location: On the rocks

PostPosted: Tue May 14, 2013 2:01 pm    Post subject: Reply with quote

21' Sport Step Tec
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