Modular cam profiles ??
Posting Guru
Joined: May 2002
Posts: 1,673
Likes: 0
From: Chicago Area
Modular cam profiles ??
Yeah, its in the shop manual. Which, by the way, you must have if you're going inside your engine. I'll look it up for you if somebody doesn't post it soon.
Just out of curiosity, why do you care? If you want to know for rebuilding or just your personal knowledge, that's fine. (as an aside; "modular" is engineering-speak for "non-repairable sub-assembly"--you're supposed to replace the modules in case of fault, so I don't know what might be involved with getting into the heads).
If you're thinking of changing, you'd be best off to talk seriously to tech at one of the cam manufacturers (after checking to see if you have the PI heads). They would know any weak points for your application, and how to correct them (but don't forget: they want to sell you something!).
MrBSS
Just out of curiosity, why do you care? If you want to know for rebuilding or just your personal knowledge, that's fine. (as an aside; "modular" is engineering-speak for "non-repairable sub-assembly"--you're supposed to replace the modules in case of fault, so I don't know what might be involved with getting into the heads).
If you're thinking of changing, you'd be best off to talk seriously to tech at one of the cam manufacturers (after checking to see if you have the PI heads). They would know any weak points for your application, and how to correct them (but don't forget: they want to sell you something!).
MrBSS
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More Turbo
Joined: May 2002
Posts: 594
Likes: 5
From: Wetumpka, Alabama
Modular cam profiles ??
I really appreciate your input Mr.BSS. 
I'm doing some research on possible mods for my 93 P71 (Crown Vic Police Interceptor).
Don't really have the fundage to do it with new parts, so I'm looking for "other sources".
I'm doing some research on possible mods for my 93 P71 (Crown Vic Police Interceptor).
Don't really have the fundage to do it with new parts, so I'm looking for "other sources".
Modular cam profiles ??
Posting Guru
Joined: May 2002
Posts: 1,673
Likes: 0
From: Chicago Area
Modular cam profiles ??
5.4: Cam lobe lift: exhaust 7.49744mm = 13.75 mm valve lift; intake 7.11038 mm = 13.01 mm valve lift
4.6: Cam lobe lift: exhaust 6.58939 mm = 12.0 mm valve lift; intake 6.58939 mm = 12.0 mm valve lift
Valve diameters are the same (~34mm exh, 44.5mm intake). They do not give degrees open or overlap. Source: Ford 2001 Workshop Manual. Hope this helps.
MrBSS
4.6: Cam lobe lift: exhaust 6.58939 mm = 12.0 mm valve lift; intake 6.58939 mm = 12.0 mm valve lift
Valve diameters are the same (~34mm exh, 44.5mm intake). They do not give degrees open or overlap. Source: Ford 2001 Workshop Manual. Hope this helps.
MrBSS
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