SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: Kacan on September 12, 2018, 09:04:34 AM

Title: 454 build suggestions
Post by: Kacan on September 12, 2018, 09:04:34 AM
Im pulling my motor, looking for advice/recommendations on a mild build, block is a 399289, solid lifters (stock im sure) looking to do a good combo for top end
Thanks in advance!

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Title: Re: 454 build suggestions
Post by: 96Laveycraft21Xt on September 12, 2018, 03:44:17 PM
Hi there, What is your definition of Mild?  What parts are you looking to re-use?  What power do you have now?  RPM?  do you have a target to look for?  Budget?

Then we can give you suggestions.  Thanks! ;D
Title: Re: 454 build suggestions
Post by: eliminator18 on September 12, 2018, 09:44:33 PM
496 stroker!!


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Title: Re: 454 build suggestions
Post by: Flusher on September 13, 2018, 05:46:52 AM
Looks like your block is a 2-bolt main (http://www.nastyz28.com/bbcmenu.php).  You can still make decent reliable power on with a 2-bolt if you keep the RPM reasonable and avoid detonation.  I doubt that solid lifters would have been original in that block.

Once you get your RPM and CID set, the best set of heads in your budget is advisable.

What kind of boat/pump?  X2 on the RPM and performance goals?
Title: Re: 454 build suggestions
Post by: mash on it on September 13, 2018, 09:35:11 AM
I based mine off of a ZZ454

454, .030" over, TRW forged pistons.

ZZ hyd. roller- .510" / .540",  211 / 230, @.050"

mine- Howard's hyd. roller, .567" / .578",  225 / 231, @ .050".

ZZ454 heads- oval port aluminum, 110cc, 2.19" int., 1.88" exh.

mine-  iron oval port, 100cc, 2.06" int., 1.71" exh.

ZZ comp ratio- 9.6:1 (GM optimistic guess)
mine- 8.99:1 (calc'd, not guessed)


ZZ intake- Dual plane GM
mine- single plane Eddy Victor Jr rpm.

Pulls an American Turbine AA to 4900-4950 on pump gas, thru logs and snails.(505 hp by the charts)

ZZ454- 469 hp @5500,
519 lb/ft @3700

Hope this helps
Dan'l
Title: Re: 454 build suggestions
Post by: Kacan on September 13, 2018, 06:01:23 PM
Thank you sir! Im talking with  local builder now, turns out it was a main bearing and bad valve adjustments, motor is stripped down now, i will update on the build!

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Title: Re: 454 build suggestions
Post by: Kacan on September 13, 2018, 06:05:00 PM
Hi there, What is your definition of Mild?  What parts are you looking to re-use?  What power do you have now?  RPM?  do you have a target to look for?  Budget?

Then we can give you suggestions.  Thanks! ;D
This is a more fresh build, just done wrong, main bearing gone and he had header plumbing horribly wrong! Was pulling water, im not looking for anything crazy but to flow good, talking with a builder now about the right path

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Title: Re: 454 build suggestions
Post by: Kacan on September 13, 2018, 06:07:14 PM
It is a 2 bolt yes, numbers come back as a chevelle motor, its a tx19 with  dominator pump, not sure on pump specs. This boat was originally built with a blown 454 built by rehr-morrison

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Title: Re: 454 build suggestions
Post by: Kacan on October 06, 2018, 07:12:03 AM
496 stroker!!


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Update: definately building a 496 now

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