Like Tree0Likes

Anyone Want To Guess

Reply
Old 06-01-2006, 11:40 AM
  #1
Registered
Thread Starter
 
BY U BOY's Avatar
 
Join Date: Aug 2005
Location: HOUSTON ,TX
My Boats: 91 Scarab 21' Excel/1999 Proline 200 sport
Posts: 8,778
Default Anyone Want To Guess

HOM MUCH HP I AM RUNNING AFTER UPGRADES.

STOCK 91 454/B1 MERCRUISER 330 HP

ADDED 502 ALUMINUM HEADS
ROLLER ROCKERS
502/502 CAM
750 HOLLEY
MARINE POWER MANIFOLDS
502 INTAKE
10:1 COMP I THINK

MY GUESS IS 450HP TO 475HP

ALL INPUT IS WELCOME
Attached Thumbnails
Anyone Want To Guess-mp1.jpg   Anyone Want To Guess-mp2.jpg  
BY U BOY is offline  
Reply With Quote
Old 06-01-2006, 11:52 AM
  #2
Charter Member #232
Charter Member
 
Audiofn's Avatar
 
Join Date: Oct 2000
Location: Carlisle, MA USA
My Boats: 1979 Formula 302, 99 Formula 353, 81 Donzi 18 2+3 with 454
Posts: 18,379
Default Re: Anyone Want To Guess

Don't have a clue but it sure looks nice
__________________
Put your best foot forward!
Audiofn is offline  
Reply With Quote
Old 06-01-2006, 01:51 PM
  #3
Registered
Thread Starter
 
BY U BOY's Avatar
 
Join Date: Aug 2005
Location: HOUSTON ,TX
My Boats: 91 Scarab 21' Excel/1999 Proline 200 sport
Posts: 8,778
Default Re: Anyone Want To Guess

Anyone Have A Hp Guess?
BY U BOY is offline  
Reply With Quote
Old 06-01-2006, 02:09 PM
  #4
Registered
 
MitchStellin's Avatar
 
Join Date: Nov 2000
Location: Grand Haven, MI USA
My Boats: Zodiac RIB
Posts: 3,124
Default Re: Anyone Want To Guess

Well you opened up the breathing but the pistons are still 454 right? I would say more like 420, a 100hp increase would be huge and an HP 500 has about 474hp, which you are close to except for the holes being 454 still. To bolt on 100hp would mean a charger of some sort, either super or whipple or No2. There should be a formula but I don't know it. If I am wrong let me know but I had a magnum 454 and those are like 365, I also had 502s built to HP500 specs and saw 480hp. Let us know if you dyno it or if you realy know.
MitchStellin is offline  
Reply With Quote
Old 06-01-2006, 03:05 PM
  #5
Registered
Thread Starter
 
BY U BOY's Avatar
 
Join Date: Aug 2005
Location: HOUSTON ,TX
My Boats: 91 Scarab 21' Excel/1999 Proline 200 sport
Posts: 8,778
Default Re: Anyone Want To Guess

Quote:
Originally Posted by MitchStellin
Well you opened up the breathing but the pistons are still 454 right? I would say more like 420, a 100hp increase would be huge and an HP 500 has about 474hp, which you are close to except for the holes being 454 still. To bolt on 100hp would mean a charger of some sort, either super or whipple or No2. There should be a formula but I don't know it. If I am wrong let me know but I had a magnum 454 and those are like 365, I also had 502s built to HP500 specs and saw 480hp. Let us know if you dyno it or if you realy know.
I CAN ONLY GUESS SINCE I WILL NOT DYNO THE MOTOR. I WILL POST SOME SPEED GAINS AFTER THIS WEEKEND WHEN I DIAL HER IN. I DO KNOW WHEN I FIRED HER UP LAST NITE I WOKE A FEW PEOPLE UP AND HAD THE COPS CALLED ON ME. I GUESS I REALLY SHOULD NOT CRANK HER UP 11:30PM BUT THATS WHEN I FINISHED AND THE KID IN ME WANTED TO HEAR THE RUMBLE.

STOCK SET UP WITH A 23P MIRAGE WAS 59.9 GPS, 30 GALLONS OF FUEL AND 2 200LBS GUYS.
BY U BOY is offline  
Reply With Quote
Reply

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
C M R
Fountain
7
12-01-2007 08:46 PM
Single With Twins
Fountain
17
11-01-2006 06:20 PM



Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 06:28 AM.


Copyright 2011 OffShoreOnly. All rights reserved.