SoCal Jet Boats

Tech Talk => Engine Mechanical / Electrical => Topic started by: theskitzofrantic on June 04, 2009, 02:39:02 PM

Title: 454 vs 396
Post by: theskitzofrantic on June 04, 2009, 02:39:02 PM

I have found both these motors for sale locally and am trying to figure out which one would be better for my boat. The guy says headers and everything from my old 454 will fit on the 396....any truth to that. Also will my rail kit work with a 396?

Title: Re: 454 vs 496
Post by: beerjet on June 04, 2009, 03:22:25 PM

The only real diffrence in the 2 is the stroke of the crank and cylinder bore.
There are other diffrences like, generation, and bolt patterns and such.
If you have a specific question, you'll get a specific answer.

Quote from: theskitzofrantic on June 04, 2009, 02:39:02 PM

Also will my rail kit work with a 396?

Like this one, yes.

-beerjet-

Title: Re: 454 vs 396
Post by: enginedoctor on June 04, 2009, 03:33:20 PM

Ginger or Maryann  ???  Betty or Veronica  ???

Caution.... 454 has counter weights for balancing on flywheel and harmonic!

396 does not !!  ;D

Go with the 454 :o

Title: Re: 454 vs 396
Post by: pw_Tony on June 04, 2009, 03:53:31 PM

I will be knowing exactly the difference is between a .060" 396, and a .030 454 will be here in a couple weeks  O0 With EVERYTHING being exactly the same, just cubic inch change

Title: Re: 454 vs 396
Post by: nathan72 on June 04, 2009, 04:16:36 PM

imo you can get more rpm out of 396 but that was in a car!

Title: Re: 454 vs 396
Post by: obnoxious001 on June 04, 2009, 05:22:56 PM

Quote from: pw_Tony on June 04, 2009, 03:53:31 PM

I will be knowing exactly the difference is between a .060" 396, and a .030 454 will be here in a couple weeks  O0 With EVERYTHING being exactly the same, just cubic inch change

Bear in mind that the combination of heads and camshaft should be optimized for cubic inches, so if you are running the same cam and heads, you may not maximize your results. 

Title: Re: 454 vs 396
Post by: obnoxious001 on June 04, 2009, 05:27:26 PM

Quote from: theskitzofrantic on June 04, 2009, 02:39:02 PM

I have found both these motors for sale locally and am trying to figure out which one would be better for my boat. The guy says headers and everything from my old 454 will fit on the 396....any truth to that. Also will my rail kit work with a 396?

While the two engines should both fit, 58 cubic inches should net additional horsepower and torque given equal matching of components.  If you plan to put them straight into the boat, you need more information to make an educated choice.  A "performance" 396 may outperform a stock truck 454.  Also, if the 454 is a 1991 or newer engine, it will have parts that are different than the earlier ones.

Title: Re: 454 vs 396
Post by: enginedoctor on June 04, 2009, 06:08:58 PM

[q1244156011]will be knowinIg exactly the difference is between a .060" 396, and a .030 454 will
 be here in a couple weeks  O0 With uote author=pw_Tony link=topic=7225.msg99130#msg99130 date=EVERYTHING being exactly the same, just cubic inch change
[/quote]



 ??? ???  What does that mean  ???

Title: Re: 454 vs 396
Post by: jet boat performance on June 04, 2009, 08:54:12 PM

Heres a little "thread jack" twist This is a BBC 434 (396 with a 454 crank) theoretically makes Mad HP and Torque (450ft lbs at 4K) and turns an AA impeller 5100 rpms
This is becoming popular with the "number correct" car crowd and a very nice motor to build as well , requires "serious balancing" but make use of those 396 blocks  ;D
(https://www.socaljetboats.com/proxy.php?request=http%3A%2F%2Fi147.photobucket.com%2Falbums%2Fr319%2Fjetboatperformance%2Fmiller%2520project%25202%2FDSC09403.jpg&hash=00b548b77472fd25fd94f82e62801e6dab47a969)

PSS other than the internal and external balance issues (flywheels and dampners)  (OEM), the motors prior to  Gen 5's are nearly indistinguishable , Love them 427's too , bad ass stuff !

Title: Re: 454 vs 396
Post by: pw_Tony on June 04, 2009, 10:44:11 PM

Quote from: enginedoctor on June 04, 2009, 06:08:58 PM

[q1244156011]will be knowinIg exactly the difference is between a .060" 396, and a .030 454 will
 be here in a couple weeks  O0 With uote author=pw_Tony link=topic=7225.msg99130#msg99130 date=EVERYTHING being exactly the same, just cubic inch change




 ??? ???  What does that mean  ???

It means, I'll be going over to a 454.... and use the heads and cam that were intended for a 454 in the first place  ;D

Title: Re: 454 vs 396
Post by: enginedoctor on June 05, 2009, 09:34:52 AM

Okay, now that makes sense   ;D