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Author
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Topic: Cleveland Cam comparison (kinda interesting)
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kid vishus
Gearhead Posts: 6098
From: middle of NC
Registered: Oct 2000
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posted 08-15-2001 03:35 PM
   
As everyone who has been following the path of destruction I have led this year knows, a few weeks back I destroyed my roller cam. So, in the attempt to save some money I put in a solid cam I had laying around. It ran horrible. So I bought a new solid cam (Crower) and installed it. First, here are the specs of my roller
264 int duration @ .050
272 exh duration @ .050
108 lobe seperation
104 centerline, installed straight up
.605 lift int (using 1.6 rockers)
.650 lift exh
valve lash hot as recomended .026 int .028 exh My solid cam specs
266 in duration @ .050
277 exh duration @ .050
107 lobe seperation
103 centerline (installed straight up)
.580 int lift (using 1.6 rocker)
.623 exh lift
valve lash hot .020 int , .022 exh I use the 1.6 rockers on the intakes due to lack of valve to piston clearance. Now for the interesting part. My ET predictor/weather station/computer has a "tune" function, you enter the corrected altitude and the ET, and it corrects it back to sea level for a fair comparisson. My roller was always around 6.28-6.30 sea level ET, the solid cam is 6.34-6.36 sea level ET. That would be about a tenth in the 1/4. Soooo....
I am starting to think the roller wasnt worth the trouble or the added expense. Or, my roller was wrong for the aplication.
Either way, this solid cam works real good. 
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kid vishus
Gearhead Posts: 6098
From: middle of NC
Registered: Oct 2000
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posted 08-15-2001 07:13 PM
I just remembered something. The diference wouldnt even be that much if I took out the extra 80 lbs of lead I bolted in 3 weeks ago 
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 08-15-2001 10:01 PM
That's very interesting Rob! We were too cheap to go with a roller on Mel's H.S. budget car. The money can make more h.p. other places IMO. Thanks for the info,SteveW
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SG236
Gearhead Posts: 416
From: Jasper, TN, USA
Registered: Dec 2000
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posted 08-16-2001 08:34 AM
Kid I agree about the solid. Unless your in the big HP range a roller is not necessary. It's nioe if you have the funds. I need the money elsewhere. Good Luck the rest of the season.------------------
Russ Hood
70s Maverick S/Pro
https://mustangsandmore.com/ubb/SG236.html
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kwazykat
Moderator Posts: 7169
From: ...a wonderful place to be.... orange county... NC!!!! M&M member #92 .... a blue-oval GRRL-deluxe.....
Registered: Jun 99
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posted 08-16-2001 09:21 PM
quote:
Originally posted by kid vishus:
duration
duration
straight up
lift
lift
hot as recomended
duration
duration
straight up
lift
lift
hot
worth the trouble
works real good.
oh!!!! now i understand!!!
see!!! my selective hearing works fine just fine!!!!!!! sorry kid, i really really couldnt resist this one.....
and because i know it is really a serious post..... um... will you forgive?
kk
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TomP
Gearhead Posts: 5761
From: Delta BC Canada
Registered: Dec 99
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posted 08-17-2001 02:32 AM
KaylinAs i thrust my hot slippery (cam)shaft into the dark tight hole in the front of... 
...the 427 i came to realize that the roller cam made not an iota of difference with my engine as it was, a manifold picked it up a bunch,but the cam simply broke valvetrain parts with no gains in power. I think that until you are beyond the range of solid lifter grinds (ie: more than 280* at .050") a roller is a waste of money. [This message has been edited by TomP (edited 08-17-2001).]
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bluestreek
Gearhead Posts: 1724
From: Athens,GA
Registered: Jul 2001
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posted 08-17-2001 11:11 AM
Wow!! Now I understand why they call it "Hot Rodding"..
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steve'66
Gearhead Posts: 8826
From: Sonoma,CA,USA
Registered: Mar 2000
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posted 08-17-2001 11:30 AM
Now all we need is Ked and Stew to join this thread.
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kid vishus
Gearhead Posts: 6098
From: middle of NC
Registered: Oct 2000
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posted 08-17-2001 03:58 PM
YIKES !!
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Ked
Moderator Posts: 8960
From: Fayetteville, N.C.
Registered: Jul 99
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posted 08-17-2001 07:33 PM
Present and accounted for!!!!
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Doc
Gearhead Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001
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posted 08-17-2001 09:07 PM
Quote from Tom P (the 427 i came to realize that the roller cam made not an iota of difference with my engine as it was, a manifold picked it up a bunch,but the cam simply broke valvetrain parts with no gains in power) So you sold me the parts breaker huh? I've seen your kind before ! ------------------
If you had a rubber cam would it get wilder as the RPMs go up?
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TomP
Gearhead Posts: 5761
From: Delta BC Canada
Registered: Dec 99
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posted 08-18-2001 03:10 AM
LarryHell no,that was the "little" cam, the one i tried was .753 lift, i'm a glutton for punishment, i'm gonna try it again once i have stronger rockers
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Doc
Gearhead Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001
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posted 08-18-2001 03:44 AM
Next time we build one of these FE things we're gonna use B&B rockers on it. The Sharps went bad with very little use and the heads have to be machined for the B&Bs so we bought a new set of Sharps cause the stands, spacers and shafts were perfect but the quality is very poor on them as well, the Comp Cams rockers on Jacks 428 are still good so that's probably what I shoulda done this time, shucks! ------------------
If you had a rubber cam would it get wilder as the RPMs go up?
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Stewart
Gearhead Posts: 9743
From: Monterey, CA Mustangsandmore Member #437
Registered: Apr 2000
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posted 08-18-2001 04:25 AM
LMAO! Ya know it's bad when not one, but two of my cohorts here at M&M send me an email to make sure I don't miss this thread!!Psssst...hey Rob. I know you know this, but I can't resist stating the obvious. No matter how big the camshaft is,  and no matter how fast you make that engine go, and no matter how much duration you have, never, EVER break any valvetrain parts!  Stewart ------------------
Got Milk? :-)~~
If you go fishing, bring a fishnet ;) you might catch a hummingbird 1990 Platinum GT: 25th Year Anniversary Edition
- Some mods, but not enough!
1996 Blue Crown Vic
- Suspension and exhaust mods, but nothing else...YET!
1998 solid Paint Quarter Horse: One Hot Diamond
- He's green, but Renee's training him!
M&M Member #437
Blue Oval Believer, thru and true.
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Doc
Gearhead Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001
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posted 08-18-2001 04:36 AM
And???? 
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TomP
Gearhead Posts: 5761
From: Delta BC Canada
Registered: Dec 99
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posted 08-18-2001 05:09 AM
I think its in code  Beats me
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Butch Jennings
Gearhead Posts: 624
From: No. California
Registered: Apr 2000
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posted 08-18-2001 10:42 AM
quote:
Originally posted by Doc:
Next time we build one of these FE things we're gonna use B&B rockers on it.
Those were T&D's we were looking at for Rod's deal.
------------------
Butch
460 powered 1967 Comet Cyclone
10.271 @ 130.069
Butcher's Home Page
"Friends don't let friends drive Chevys"
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Doc
Gearhead Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001
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posted 08-18-2001 02:03 PM
That's what I get for doin my own thinkin ! I bet I'd have fun trying to find B&Bs LOL!------------------
If you had a rubber cam would it get wilder as the RPMs go up?
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