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bubblin_hallett

  • Karma: +1/-0
Here we go again!
« on: July 15, 2015, 08:54:28 PM »
Well sold the hallett because of the unknown olds in it! Bought a mini day (the 77 eliminator on here that was for sale) and went to time it today and it had a dead hole! Dad took the valve covers off to find rockers were tight but some weren't moving! Tore it down farther to find bad lifters and rounded camshaft! (7 lobes) time to pull it and check the bearings! Any suggestions on a good Lopey cam for a 454?


Floating through life like I'm on my boat with a beer in my hand!!
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JARVIS

  • Karma: +18/-0
Re: Here we go again!
« Reply #1 on: July 15, 2015, 09:49:50 PM »
 :banghead:

dang,......sorry to hear that.  make sure it gets cleaned out well.  that metal went somewhere....(aside from filter)

you can rebuild her.....stronger....faster....better... ..
  • Boat #1: '81 tahiti mini day cruiser
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-JARVIS-

bubblin_hallett

  • Karma: +1/-0
Re: Here we go again!
« Reply #2 on: July 15, 2015, 09:53:13 PM »
Thanks! That's the plan! Pulling her out this weekend


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jet fever

  • Karma: +7/-2
Re: Here we go again!
« Reply #3 on: July 15, 2015, 10:02:37 PM »
Look at the bright side you dont have a boat with an Olds in it >:D
  • Boat #1: 76 Hallett Bubble Deck
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bubblin_hallett

  • Karma: +1/-0
Re: Here we go again!
« Reply #4 on: July 15, 2015, 10:03:51 PM »
Hahaha very true!! Just frustrating! Boat had 60psi of oil pressure sounded great when we bought it! Then bam dead hole and whole new box of worms


Floating through life like I'm on my boat with a beer in my hand!!
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jet fever

  • Karma: +7/-2
Re: Here we go again!
« Reply #5 on: July 15, 2015, 10:36:15 PM »
Alot of cam options but I always like the 6272989 cam for stock 454. 

I'm not sure what you are gonna do with the motor.   Or what RPM it turns.  Does it have stock heads?  Did you even get to see what RPM it turned?  Im a believer in Torque is king so dont go to big on the cam get one which powerband matches your Target RPMs
« Last Edit: July 15, 2015, 10:47:24 PM by jet fever »
  • Boat #1: 76 Hallett Bubble Deck
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bubblin_hallett

  • Karma: +1/-0
Re: Here we go again!
« Reply #6 on: July 16, 2015, 09:09:33 AM »
No idea what rpms it turns haven't even had on the water yet but it does have stock heads! I'll check out this can though thanks for the input


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bubblin_hallett

  • Karma: +1/-0
Re: Here we go again!
« Reply #7 on: July 16, 2015, 09:11:33 AM »
And who makes the cam?


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jet fever

  • Karma: +7/-2
Re: Here we go again!
« Reply #8 on: July 16, 2015, 11:26:22 AM »
Oh thats an old GM number but Im sure comp and crane have something thats a match.  Its pretty mild but you can search for one to match powerband.  Remember this rule of thumb the guy who picks cam that is just too much cam for his motor is dissapointed.  The guy that went conservative would like a lil more.  You dont want a cam to make power at 4500-6500 when your boat only turns 5000 max.  A motor that pulls hard will always bring smiles even if it isnt the fastest and in a stock motor mild will be the best money spent IMO. 
Id look for 1500-4500 something like that
  • Boat #1: 76 Hallett Bubble Deck
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JARVIS

  • Karma: +18/-0
Re: Here we go again!
« Reply #9 on: July 16, 2015, 12:34:06 PM »
Sounds like the power band of factory engine.....for street use.
  • Boat #1: '81 tahiti mini day cruiser
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jet fever

  • Karma: +7/-2
Re: Here we go again!
« Reply #10 on: July 16, 2015, 01:10:09 PM »
Well I meant bottom end
Its a stock head engine its limited
  • Boat #1: 76 Hallett Bubble Deck
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bubblin_hallett

  • Karma: +1/-0
Re: Here we go again!
« Reply #11 on: July 16, 2015, 01:36:04 PM »
Thanks for the advice


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southwind1

  • Karma: +0/-0
Re: Here we go again!
« Reply #12 on: July 17, 2015, 06:42:01 PM »
Have you thought about putting a roller cam and lifter in it

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mash on it

  • Karma: +29/-0
Re: Here we go again!
« Reply #13 on: July 21, 2015, 09:37:51 AM »
Well I meant bottom end
Its a stock head engine its limited

How much bottom end does one need?

From JBP hp chart, 'A' Impeller :

RPM     Horsepower     Torque-FT-LBs 
1000                     3.58          18.78
1100                     4.76          22.73
1200                     6.18          27.05
1300                     7.86          31.74
1400                     9.82          36.82
1500                   12.08          42.26
1600                   14.65          48.09
1700                   17.58          54.28
1800                   20.87          60.86
1900                   24.54          67.81
2000                   28.62          75.13
2100                   33.13          82.84
2200                   38.10          90.91
2300                   43.53          99.36
2400                   49.46         108.19
2500                 55.90              117.40


Stock heads are capable of 500+ HP.
Not all stock heads are capable of that, though.

'A' Impeller, Peanut port heads & headers, 9.5:1, 292AH cam, 5200 rpm. 71.8 mph, ~503 hp

Have you thought about putting a roller cam and lifter in it

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Dan'l
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bubblin_hallett

  • Karma: +1/-0
Re: Here we go again!
« Reply #14 on: October 17, 2015, 07:49:55 PM »
Well we just decided to buy another motor and rebuild the other one slowly! Almost ready to drop just a few more little things!


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