cam timming

ocoeelin · 12-23-2005, 10:26 AM

does anybody make a mulit indexing cam sprocket to advance and retard camshafts? for a 4.6 single cam. and wear would you measure lift? thanx roy

bigwhitecobra · 12-23-2005, 10:34 AM

No one makes one that I know of. I'm not sure that you would really want to do that it the first place. These motors turn really tight tolerances and I wouldn't want to risk slapping a valve. As long as the timing is set straight up everthing runs hunky dorey, but get into advancing and retarding the cam and things get a little hairy. I have pulled an engine or two out of cars that the oil pressure dropped, which in effect advanced the cam about 4 degrees and every valve in those cars hit the pistons. Of course those were Stage 2 cams, but the point still stands. Hope this helps out some.

ocoeelin · 12-23-2005, 10:43 AM

thanx but how does one know the timming relation of piston position to valve opening? and both cams are on time, WHAT happens when you mill the heads? roy

bigwhitecobra · 12-24-2005, 10:09 AM

Well, not to sound condecending, but you can only go so far with the heads anyway. I'd be glad to look that up for you, but those aren't numbers that I know right off the top of my head. There is some play room, but again, I would have to look them up.

If you are looking for more power, honestly, you may want to look into getting a set of cams for your car. A nice set of Comp Cams Stage 2 cams run about $550-$600. Not as cheap as a 5.0L but not too terribly bad for the power gain.

bigwhitecobra · 12-29-2005, 11:20 AM

Oh hey, I found out that Fox Lake makes the adjustable cam gears for these cars. I'm not sure of the degree of advance or retard, but you may want to look into it.

ocoeelin · 12-29-2005, 11:32 AM

thanx. for the info how do i get in touch with fox lake? roy

bigwhitecobra · 12-30-2005, 12:02 PM

http://www.foxlakeracing.com/

12-23-2005, 10:26 AM	#1
ocoeelin Registered Member Join Date: Dec 2005 Location: fl Posts: 3	cam timming does anybody make a mulit indexing cam sprocket to advance and retard camshafts? for a 4.6 single cam. and wear would you measure lift? thanx roy

12-23-2005, 10:34 AM	#2
bigwhitecobra Huh? Whatcha said? Join Date: Oct 2000 Location: Fayetteville, NC Posts: 1,073	Re: cam timming No one makes one that I know of. I'm not sure that you would really want to do that it the first place. These motors turn really tight tolerances and I wouldn't want to risk slapping a valve. As long as the timing is set straight up everthing runs hunky dorey, but get into advancing and retarding the cam and things get a little hairy. I have pulled an engine or two out of cars that the oil pressure dropped, which in effect advanced the cam about 4 degrees and every valve in those cars hit the pistons. Of course those were Stage 2 cams, but the point still stands. Hope this helps out some. __________________ 2003 GT White---STOLEN May you burn in hell whoever took it. Dumbazz didn't even get the good engine that was in the garage.

12-23-2005, 10:43 AM	#3
ocoeelin Registered Member Join Date: Dec 2005 Location: fl Posts: 3	Re: cam timming thanx but how does one know the timming relation of piston position to valve opening? and both cams are on time, WHAT happens when you mill the heads? roy

12-24-2005, 10:09 AM	#4
bigwhitecobra Huh? Whatcha said? Join Date: Oct 2000 Location: Fayetteville, NC Posts: 1,073	Re: cam timming Well, not to sound condecending, but you can only go so far with the heads anyway. I'd be glad to look that up for you, but those aren't numbers that I know right off the top of my head. There is some play room, but again, I would have to look them up. If you are looking for more power, honestly, you may want to look into getting a set of cams for your car. A nice set of Comp Cams Stage 2 cams run about $550-$600. Not as cheap as a 5.0L but not too terribly bad for the power gain. __________________ 2003 GT White---STOLEN May you burn in hell whoever took it. Dumbazz didn't even get the good engine that was in the garage.

12-29-2005, 11:20 AM	#5
bigwhitecobra Huh? Whatcha said? Join Date: Oct 2000 Location: Fayetteville, NC Posts: 1,073	Re: cam timming Oh hey, I found out that Fox Lake makes the adjustable cam gears for these cars. I'm not sure of the degree of advance or retard, but you may want to look into it. __________________ 2003 GT White---STOLEN May you burn in hell whoever took it. Dumbazz didn't even get the good engine that was in the garage.

12-29-2005, 11:32 AM	#6
ocoeelin Registered Member Join Date: Dec 2005 Location: fl Posts: 3	Re: cam timming thanx. for the info how do i get in touch with fox lake? roy

12-30-2005, 12:02 PM	#7
bigwhitecobra Huh? Whatcha said? Join Date: Oct 2000 Location: Fayetteville, NC Posts: 1,073	Re: cam timming http://www.foxlakeracing.com/ __________________ 2003 GT White---STOLEN May you burn in hell whoever took it. Dumbazz didn't even get the good engine that was in the garage.

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