Re: Camshaft Installed Center Line question.
[Re: GTX MATT]
#1590995
03/11/14 09:22 AM
03/11/14 09:22 AM
|
Joined: Oct 2006
Posts: 596 Mass.
80fbody
mopar
|
mopar
Joined: Oct 2006
Posts: 596
Mass.
|
Quote:
Look at any of Comp Cams 110 degree LSA cams, almost every one of them has a recommended intake centerline angle of 106 degrees, AKA 4 degrees advanced.
My comp roller is exactly as GTX said. Dot to Dot came in a 106. The advance is figured in already. So the OP's cam may come in at 104 when lined up.
|
|
|
Re: Camshaft Installed Center Line question.
[Re: 80fbody]
#1590996
03/11/14 09:37 AM
03/11/14 09:37 AM
|
Joined: Mar 2010
Posts: 632 MD-USA
Dodgeguy101
mopar
|
mopar
Joined: Mar 2010
Posts: 632
MD-USA
|
Quote:
Quote:
Look at any of Comp Cams 110 degree LSA cams, almost every one of them has a recommended intake centerline angle of 106 degrees, AKA 4 degrees advanced.
My comp roller is exactly as GTX said. Dot to Dot came in a 106. The advance is figured in already. So the OP's cam may come in at 104 when lined up.
I would say you got lucky.
|
|
|
Re: Camshaft Installed Center Line question.
[Re: Dodgeguy101]
#1590997
03/11/14 11:54 AM
03/11/14 11:54 AM
|
Joined: Jan 2003
Posts: 10,088 Frostbitefalls MN (Rocky&Bullw...
gregsdart
I Live Here
|
I Live Here
Joined: Jan 2003
Posts: 10,088
Frostbitefalls MN (Rocky&Bullw...
|
The last cam I did I got a surprise. It was way off, and I had to retard it to get back to 103! Luckily, it was a pig of a 350 SBC that needed all the cylinder pressure it could get. So for my put it in straight up dot to dot, check it, then if it is a stock short block which tend to be low on compression, I would advance it to less than 108, maybe 104 as a starting point. If you think the cam is fairly modest for the surrounding parts, gears, etc, then try 108. For the most part, advanced won't hurt you as much as going retarded.
8.582, 160.18 mph best, 2905 lbs 549, indy 572-13, alky
|
|
|
Re: Camshaft Installed Center Line question.
[Re: GTX MATT]
#1591000
03/11/14 01:01 PM
03/11/14 01:01 PM
|
Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
|
Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
|
Quote:
Quote:
Quote:
Quote:
Look at any of Comp Cams 110 degree LSA cams, almost every one of them has a recommended intake centerline angle of 106 degrees, AKA 4 degrees advanced.
My comp roller is exactly as GTX said. Dot to Dot came in a 106. The advance is figured in already. So the OP's cam may come in at 104 when lined up.
"The advance is figured in already" - and that is where a lot of the confusion comes in on this subject. That is also why you should start with the cam card specs when installing a cam - unless you have a SOLID, FACTUAL reason to deviate from it.
Exactly, you don't know if the advance is figured in accurately. You need to check it. The bottom line is if the recommended ICL is 106, you should start at 106.
The reason I say advance it even farther is that any SB street car needs all the low end torque you can find and that is done by advancing it a bit more.. and I do understand that the ICL vs the LSA... the 108 is now the the zero point(it already has the 4* built in.. if you were to use the dot to dot with it at 0 it would come up to 108 not 112(if all the stuff is made right)
|
|
|
|
|