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Re: cam advance,blown,stroked
[Re: Mr.Yuck]
#352832
06/22/09 01:51 PM
06/22/09 01:51 PM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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Your math is really bad man
lobe lift x rocker ratio
.424 X 1.5 = .636
.424 X 1.6 = .6784
Last edited by Dodgem; 06/22/09 01:52 PM.
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Re: cam advance,blown,stroked
[Re: royt440]
#352833
06/22/09 04:05 PM
06/22/09 04:05 PM
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Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
patrick
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,123
Grand Haven, MI
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Quote:
CompCams XE268H-10 The following is from the spec card.
I'm using 1.6 rockers: Intake .509, Exhaust .512
Duration @.006 I=268 E=280
Open @.006 I=28*BTDC E=74*BBDC
[Email]Close@.006[/Email] I=60*ABDC E=26*ATDC
These specs are for cam installed @106* Intake Centerline
Duration @.050 I=224 E=230
Lobe Separation 110*
Quote from CompCams instructions "We grind most all of our cams 4* advanced."
So does that mean if I install it straight up (dot to 0* mark on crank gear) that I already have 4*? Do I need any more? The crank gear has settings for 0,2,4,6,&8* advance or retard.
The block is a 440, .060over with the 500ci kit from 440Source.
Stealth heads.
Ross dished pistons. About 8:1 compression.
Dyer's 671 blower, pulleys at 8lbs.
Thanks,
Roy
yes, if you line up the dots, it *should* be 106 ICL
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1986 Silver/Twilight Blue Chrysler 5th Ave HotRod **SOLD!***
2011 Toxic Orange Dodge Charger R/T
2017 Grand Cherokee Overland
2014 Jeep Cherokee Latitude (holy crap, my daughter is driving)
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Re: cam advance,blown,stroked
[Re: Dodgem]
#352834
06/23/09 08:21 AM
06/23/09 08:21 AM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Your math is really bad man
lobe lift x rocker ratio
.424 X 1.5 = .636
.424 X 1.6 = .6784
really you take .424 DIVIDE by 1.5 = 282.66
then you multiply 282.66 x 1.6 = you new lift 452.26
He doesn't have a 636 cam to start with. That's not how it works.
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Re: cam advance,blown,stroked
[Re: Mr.Yuck]
#352835
06/23/09 09:23 AM
06/23/09 09:23 AM
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Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,041
Lincoln Nebraska
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easiest way is to multiply your(1.5) lift figure by 1.067 to get the new 1.6 lift amount. Got a Q, if the cam card says 110 ICL & they automatically grind their cam 4 deg advanced does that mean that when you degree the cam that the ICL will come in @ 106? And ICL is different from the 110 LCA angle on the card?
live every 24 hour block of time like it's your last day on earth
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Re: cam advance,blown,stroked
[Re: blownzoom440]
#352841
06/24/09 12:33 AM
06/24/09 12:33 AM
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Joined: Aug 2005
Posts: 4,861
Riverside, Ca
R70RUNNER
master
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master
Joined: Aug 2005
Posts: 4,861
Riverside, Ca
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Quote:
it will be interesting to see your cranking psi.
the first cam i tried was a BDS with 110 and 90* overlap.  i had 110 psi with 8.8cr 
 them are the ones....
Current cars: 2000 Dak Quad Cab, 2012 Challenger,1970 Road Runner, 1994 Firehawk
1966 Coronet post sedan, 1988 Corvette, 2005 Magnum RT all SOLD
R70RUNNER<---VP Inland Empire Chapter of the MPM
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Re: cam advance,blown,stroked
[Re: patrick]
#352842
06/24/09 07:21 AM
06/24/09 07:21 AM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
Quote:
Your math is really bad man
lobe lift x rocker ratio
.424 X 1.5 = .636
.424 X 1.6 = .6784
really you take .424 DIVIDE by 1.5 = 282.66
then you multiply 282.66 x 1.6 = you new lift 452.26
He doesn't have a 636 cam to start with. That's not how it works.
uh, he said it was .424" LOBE lift
got ya!
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