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Cam timing question

  • Thread starter Thread starter Maryland Stang
  • Start date Start date Jan 2, 2008

Maryland Stang

Active Member
Aug 21, 2002
1,656
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39
Greenville, NC
Jan 2, 2008
#1
  • Jan 2, 2008
  • #1
I'm degreeing in my cam and I have a quick question. It's a B cam with 5 BTDC and 39 ABDC on the intake. My check came up with 1 BTDC and 44 ABDC. Is this cam 4 degrees advanced the way it is? I reallize the closing would be 5 instead of 4.
 

5spd GT

"the 5.0 owns all"
Founding Member
Aug 7, 2002
9,516
6
99
Arkansas
Jan 2, 2008
#2
  • Jan 2, 2008
  • #2
Maryland Stang said:
I'm degreeing in my cam and I have a quick question. It's a B cam with 5 BTDC and 39 ABDC on the intake. My check came up with 1 BTDC and 44 ABDC. Is this cam 4 degrees advanced the way it is? I reallize the closing would be 5 instead of 4.
Click to expand...

If you are trying to get to 5* BTDC, and you are getting a later intake opening point, like 1* BTDC, it is 4* retarded.

This is the cam degreeing procedure I used.

Good Luck.
 

Maryland Stang

Active Member
Aug 21, 2002
1,656
30
39
Greenville, NC
Jan 2, 2008
#3
  • Jan 2, 2008
  • #3
5spd GT said:
If you are trying to get to 5* BTDC, and you are getting a later intake opening point, like 1* BTDC, it is 4* retarded.

This is the cam degreeing procedure I used.

Good Luck.
Click to expand...

I was actually trying to get to 4 degrees advanced. I just wasn't sure which way was advanced or retarded. I'll double check but it looks like I have to go to 9 degrees BTDC.

The B cam is supposed to have 4 degrees of advance built in. Does that mean I only have to come back to 5 degrees BTDC?

I will double and triple check everything before I button it back up.
 
B

BYRDPE

Founding Member
Nov 4, 1998
1,556
0
37
Memphis,Tn.
Jan 3, 2008
#4
  • Jan 3, 2008
  • #4
I advanced mine 4 degrees from straight up. I did not degree it prior to the install. With the 3.73 gears that I run it has great lowend and pulls like a mutha in mid range all the way to 6K.
This was prior to the SC install. Of course it's balls to the walls now.
 
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