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onbz

  • Karma: +0/-0
best cam ???IYO
« on: August 24, 2010, 11:42:34 PM »
was running a chet herbert roller cam but i think i wanna try someone diffrent.Lunati,clay smith????who make quality now a days?
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1968 hallet wood deck,1989 dana,current 21 open bow eliminator.

lbhsbz

  • Karma: +29/-1
Re: best cam ???IYO
« Reply #1 on: August 25, 2010, 12:06:03 AM »
Don't choose a cam based on the name on the box, choose a cam based on the specs.

What cam do you have now?  What are the specs?  How does it run?  What are you trying to accomplish with your new cam?  Tell us about your motor...
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GT Jets

  • Karma: +192/-0
Re: best cam ???IYO
« Reply #2 on: August 25, 2010, 12:15:09 AM »
The best cam you could ever run is right here, I will sell it to you for a special price.... >:D

IMHO, the "best cam" is a myth.

There are several people who think they have the answer on what works "best"...The problem with that statement is, if there is no information about the setup, there is no way in hell someone could make that determination.

IMHO, even the "wrong" cam can be made to run like a scared rabbit, it just takes knowledge and time to figure them out...Not saying "any cam" would work, but you could be off a bit and still make some stuff happen...Seen it myself. 8)

GT
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  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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Quote from: Brad @ SoCalJetBoats.com on December 22, 2009, 07:40:31 PM
If i get some free time tonight at work, ill play with it and post it for everyone to see.

Quote from: IRRebel on June 11, 2011, 07:30:45 PM
Time to man up and yank it John!  :banghead:
Ray

onbz

  • Karma: +0/-0
Re: best cam ???IYO
« Reply #3 on: August 25, 2010, 09:46:12 AM »
Quote from: lbhsbz on August 25, 2010, 12:06:03 AM
Don't choose a cam based on the name on the box, choose a cam based on the specs.

What cam do you have now?  What are the specs?  How does it run?  What are you trying to accomplish with your new cam?  Tell us about your motor...
chet herbert solid roller 312/312 629 lift 110 lobe center.motor 496/with merlin cast square port heads /je pistions/comp cams roller lifters/dual plain eldelbrock mani/demon 850 mani secondaries/10qt pan...
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onbz

  • Karma: +0/-0
Re: best cam ???IYO
« Reply #4 on: August 25, 2010, 09:57:49 AM »
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lbhsbz

  • Karma: +29/-1
Re: best cam ???IYO
« Reply #5 on: August 25, 2010, 09:58:32 AM »
Whats the compression ratio?  What's the duration of the cam at .050" lift?

I think that carb is way to small for your motor....

Edit..just saw your picture...Holy bigass quarter stringers!!!
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onbz

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Re: best cam ???IYO
« Reply #6 on: August 25, 2010, 09:58:37 AM »
« Last Edit: August 25, 2010, 10:00:55 AM by onbz »
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1968 hallet wood deck,1989 dana,current 21 open bow eliminator.

onbz

  • Karma: +0/-0
Re: best cam ???IYO
« Reply #7 on: August 25, 2010, 10:03:08 AM »
Quote from: onbz on August 25, 2010, 09:58:37 AM
Quote from: onbz on August 25, 2010, 09:57:49 AM
(Attachment Link)
 JE 9 1/2 -1 pistions
LOL thats how the boat was built ....i redid them last year...motor answers 244 duration, JE 9 1/2 to1 comp.
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1968 hallet wood deck,1989 dana,current 21 open bow eliminator.

ROMPERSTOMPER

  • Karma: +0/-0
Re: best cam ???IYO
« Reply #8 on: August 25, 2010, 03:29:38 PM »
Dont think you can go much bigger with those heads. Have you done work to the heads or are they stock? I had to have my 990's machined for bigger springs to get up to a 750 + lift cam. clay smith the the head work and they came out awsome. I woulod stick with what you got untill something breaks. Clay smith is good stuff. want more power, throw some nitrous in the mix. cheep hp if you ask me as long as you got a 4 bolt main. you can run 300+ n2o with h beam rods, sreel crank, 4 bolt mains, and forged pistions.
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onbz

  • Karma: +0/-0
Re: best cam ???IYO
« Reply #9 on: August 26, 2010, 11:18:47 PM »
the guy i have putting my motor back together said that he thinks that i should get away from a solid roller cam setup...and run a solid flat tappet cam and lifters. said that solid roller cams are for race motors not motors that you are running all day up and down the river. he also said that within time odds are that the roller lifters will most likely fail causing poss. engine failure.WTF?i have heard that alot of people are flattening their solid flat tappet cams lately ///TRUE OR FALSE?
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enginedoctor

  • Karma: +7/-0
Re: best cam ???IYO
« Reply #10 on: August 27, 2010, 12:02:05 AM »
Quote from: onbz on August 26, 2010, 11:18:47 PM
the guy i have putting my motor back together said that he thinks that i should get away from a solid roller cam setup...and run a solid flat tappet cam and lifters. said that solid roller cams are for race motors not motors that you are running all day up and down the river. he also said that within time odds are that the roller lifters will most likely fail causing poss. engine failure.WTF?i have heard that alot of people are flattening their solid flat tappet cams lately ///TRUE OR FALSE?

You and I just talked about this :sly:
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  • Boat #1: 1970 Horizon Cheby powered Jet
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GT Jets

  • Karma: +192/-0
Re: best cam ???IYO
« Reply #11 on: August 27, 2010, 12:05:11 AM »
Quote from: onbz on August 26, 2010, 11:18:47 PM
the guy i have putting my motor back together said that he thinks that i should get away from a solid roller cam setup...and run a solid flat tappet cam and lifters. said that solid roller cams are for race motors not motors that you are running all day up and down the river. he also said that within time odds are that the roller lifters will most likely fail causing poss. engine failure.WTF?i have heard that alot of people are flattening their solid flat tappet cams lately ///TRUE OR FALSE?

A solid roller will outlive any solid flat tappet IMHO.....The technology is getting pretty off the hook as far as lifters.

GT
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  • Boat #1: 1992 Carrera 20.5 Elite (I/O bitches)
  • Boat #2: 19' Bubble deck Jet BBC Berkeley
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Quote from: Brad @ SoCalJetBoats.com on December 22, 2009, 07:40:31 PM
If i get some free time tonight at work, ill play with it and post it for everyone to see.

Quote from: IRRebel on June 11, 2011, 07:30:45 PM
Time to man up and yank it John!  :banghead:
Ray

enginedoctor

  • Karma: +7/-0
Re: best cam ???IYO
« Reply #12 on: August 27, 2010, 12:08:12 AM »
Quote from: GT Jets on August 27, 2010, 12:05:11 AM
A solid roller will outlive any solid flat tappet IMHO.....The technology is getting pretty off the hook as far as lifters.

GT

X 2 GT :thumbup:...rarely I see a roller lifter fail :)
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  • Boat #1: 1970 Horizon Cheby powered Jet
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onbz

  • Karma: +0/-0
Re: best cam ???IYO
« Reply #13 on: August 27, 2010, 12:47:17 AM »
Quote from: enginedoctor on August 27, 2010, 12:08:12 AM
X 2 GT :thumbup:...rarely I see a roller lifter fail :)
what is a good roller lifter to go with these days...i am currently runnig comp cams.crower?etc
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ROMPERSTOMPER

  • Karma: +0/-0
Re: best cam ???IYO
« Reply #14 on: August 27, 2010, 04:15:01 PM »
 Never heard a builder in my life tell me to run flat tappet over solid. I'm in aw. GO solid all the way. Way better. If you go with shaft mount rockers and howards roller lifters youl rarely have adjust the valves and pick up some hp. or run good rockers like gold series crane with girdles, good lifters and beefy push rods. youl be good. DONT RUN CHEEP CHINA PARTS WITH A BIG CAM!
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lbhsbz

  • Karma: +29/-1
Re: best cam ???IYO
« Reply #15 on: August 27, 2010, 04:37:50 PM »
Find a new guy to put your motor together.  Roller lifters are far superior to the old flat tappets in just about every respect.
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mash on it

  • Karma: +29/-0
Re: best cam ???IYO
« Reply #16 on: August 27, 2010, 05:23:47 PM »
2 roller cams in two boats  ;D
flat tappet is for flat track (rule stuff :thumbdown:)
howards cam & (roller) lifters have served me well

Daniel
Mash on it
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CJ/RR 212...under construction  "Pistol Annie"
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