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cam advance,blown,stroked
#352812
06/20/09 05:26 PM
06/20/09 05:26 PM
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Joined: May 2008
Posts: 42
Marshall, Texas
royt440
OP
member
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OP
member
Joined: May 2008
Posts: 42
Marshall, Texas
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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 Close@.006 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
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Re: cam advance,blown,stroked
[Re: blownzoom440]
#352816
06/20/09 11:47 PM
06/20/09 11:47 PM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
the cam is small for the cubes but should be fun. 
With a 6-71 on top that cam is tiny for the cubes. You're going to have so much bottom end with that cam you may want to retard it a few degrees for upper rpm help.
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Re: cam advance,blown,stroked
[Re: goldmember]
#352818
06/21/09 02:07 AM
06/21/09 02:07 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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Sounds like a pretty mild build really, effective CR of about 10:1 maybe? Lots left on the table using a relatively small 6-71 on that much motor... Degree the cam in so YOU know what's going on and run it! 
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: royt440]
#352819
06/21/09 07:25 AM
06/21/09 07:25 AM
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Joined: May 2008
Posts: 42
Marshall, Texas
royt440
OP
member
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OP
member
Joined: May 2008
Posts: 42
Marshall, Texas
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Again, Moparts members, thanks for the responses. It is going to be primarily a street car and I've always wanted a blower. There are quite a few nice 3rd gen Chargers in the Member's Photos. I already have a dial indicator and found some nine inch degree wheels on both Summitt and Jegs that aren't too expensive (for one job). I've printed the procedure from the links above and plan on giving it a shot. I had called the tech line for CompCams but must have called on their busiest day.  Maybe I'll try one more time. Roy
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Re: cam advance,blown,stroked
[Re: royt440]
#352820
06/21/09 07:40 AM
06/21/09 07:40 AM
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Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
blownzoom440
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Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
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i know it is time consuming to check everything but you will relax knowing things are OK and where you can go from there.i have a .549/.559 113lsa,252/260* at .050 cam i ran for about 50 passes if you want to change.[solid lifter]cam only.40$ plus shipping.i went to a roller is why i changed it.
what pulleys do you have?3%UD or 1/1?
Last edited by METAL STORM; 06/21/09 07:45 AM.
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Re: cam advance,blown,stroked
[Re: blownzoom440]
#352821
06/21/09 09:41 AM
06/21/09 09:41 AM
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Joined: Feb 2003
Posts: 12,675
Columbia, CT
moper
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
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Even with the small blower, I'd strongly advise checking with some cam guys about a real blower type cam. I dont think that one is what you want. I'm not the best with forced induction... but I think you may be better off with much more lift, at least 20° at .050, and an LSA around 114. And I wouldnt advance it...
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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Re: cam advance,blown,stroked
[Re: Dodgem]
#352823
06/21/09 10:04 AM
06/21/09 10:04 AM
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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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I have a nice roller for sale 114 lobe separation 268/270 @ .050 and .424 (lobe) lift =(.678 with 1.6)
Last edited by Dodgem; 06/22/09 01:54 PM.
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Re: cam advance,blown,stroked
[Re: Dodgem]
#352824
06/21/09 10:15 AM
06/21/09 10:15 AM
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Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
blownzoom440
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Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
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Quote:
I have a nice roller for sale 114 lobe separation 268/270 @ .050 and .424 lift =(.678 with 1.6)
 not too streetable with the spring psi and the $$ of it.
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Re: cam advance,blown,stroked
[Re: blownzoom440]
#352825
06/21/09 11:16 AM
06/21/09 11:16 AM
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Joined: Aug 2005
Posts: 4,861
Riverside, Ca
R70RUNNER
master
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master
Joined: Aug 2005
Posts: 4,861
Riverside, Ca
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FWIW, one of the blower companies is now spec'ing 110lsa cams for street blowers, shorter duration with higher lift.Not sure if this is what the OP is using as a guide??? IMHO, the OP would be better off with a 114lsa, What he has will work, but he'll just lose some boost out the pipes.  I'd call Engle Cams and see what they have to say ...  Now if I can just get people to stop buying the blower(s) off my project motor it might get done too  Keep us updated Roy
Current cars: 2000 Dak Quad Cab, 2012 Challenger,1970 Road Runner, 1994 Firehawk
1966 Coronet post sedan, 1988 Corvette, 2005 Magnum RT all SOLD
R70RUNNER<---VP Inland Empire Chapter of the MPM
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Re: cam advance,blown,stroked
[Re: blownzoom440]
#352826
06/21/09 12:30 PM
06/21/09 12:30 PM
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Joined: Mar 2008
Posts: 5,746
Ontario, Canada
Dodgem
master
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master
Joined: Mar 2008
Posts: 5,746
Ontario, Canada
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Quote:
Quote:
I have a nice roller for sale 114 lobe separation 268/270 @ .050 and .424 lift =(.678 with 1.6)
not too streetable with the spring psi and the $$ of it.
streetable is a wide perception! LOL!!!
I know it's mild but he said he want's mild!
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Re: cam advance,blown,stroked
[Re: R70RUNNER]
#352827
06/21/09 03:52 PM
06/21/09 03:52 PM
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Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
blownzoom440
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Joined: Jul 2005
Posts: 8,647
ELYRIA,OH
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Quote:
FWIW,What he has will work, but he'll just lose some boost out the pipes.
i dont think he will loose any out the pipes as it has 7* overlap.i ran it in my dynosim program for the cam profile.
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Re: cam advance,blown,stroked
[Re: Dodgem]
#352831
06/22/09 09:08 AM
06/22/09 09:08 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:
I have a nice roller for sale 114 lobe separation 268/270 @ .050 and .424 lift =(.678 with 1.6)
how's a .424 lift cam got to 678 w/ 1.6's???? my math says it would bump to .452????
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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
1976 Spinnaker White Plymouth Duster, /6 A833OD
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: 36,040
Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
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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