cam profiles

[1sik32v]

Ok I've been looking around on other forums and can't seem to get a good idea on the lift and duration and the lobe seperation of cams on all dohc engines from all models that had dohc 4.6/5.4......some people say to put 03 cobra exhaust cams in but others say its the same cam already in the mark..... and others say to use 96-98 cobra cams but wouldn't they be the same as my 97...... and what about navigator cams for the lower to mid range trq if that's a good idea......I have a 96 engine on a stand that I want to build but nothing to crazy and I can get cams hella cheap from these selections but I can't get a straight answer on if the cams are different or not or if ill lose power on it or gain power thanks

 

[chris2523]

from what i've heard, it seems to be more work than its worth to change cams..

 

[1sik32v]

Well I have a spare engine on a stand sitting doin nothing so I wanna rebuild it but I don't wanna do aftermarket cams either u know so doin it is not a problem for more its the money for certain parts is what I don't wanna spend

 

[dollman0]

Different software programs will give you more of a bang than changing cams, you should check into that before doing something that will make your ride lose power and efficiency.

 

[lincolnboy]

Exhuast cam are the same. Unless you go with a cobra intake useless to swap the intake cam. A small build will cost a pretty pennie. So what are the plans for the motor

 

[1sik32v]

I'd like to do a Kenne bell set up if not that a lower manifold with an Eaton I think they made a kit for the 96-98 for the b heads for a 2.1l so that be the big plan if no just a :q:q:q:q load of bolt ons and porting with a nice stall and gears

 

[Rich88LSC]

Exhaust cams are all pretty much the same. 96-98 Cobra intake cams are the most aggressive stock intake cams.

 

[1sik32v]

Exhaust cams are all pretty much the same. 96-98 Cobra intake cams are the most aggressive stock intake cams.

Ok that's wut I thought

 

[MercuryLs]

Mach 1, 03/04 Cobra, Aviator, Marauder (Lincoln cams are very close to these also, but less LIFT):
Intake: 184 deg @ .050/.394 lift
Exhaust: 196 deg @ .050/.397" lift
114 lobe center

96-98 Cobra:
Intake: Primary Lobe, 196 duration @.050/ .390 lift
Secondary Lobe, 206 duration @.050/ .390 lift
Exhaust: 196 duration @.050/ .390 lift
114 lobe center

99/01 Cobra:
Intake: 196 duration @.050/.392 lift
Exhaust: 194 duration @.050/.390 lift
114 lobe center

FR500 (M-6550-T46) Cam specs:
intake adv dur 258° @.003, 212@.050 /.472 lift
exhaust adv dur 254° @.003, 208@.050 /.472 lift
109° center line
204/214 spec’d

2000 Cobra R:
intake: 212 dur@.050/.510
exhaust: 212 dur@.050 /.474

FORD GT 5.4 DOHC
Int: 197 duration .466 lift
Exh: 197 duration .456 lift

 

[1sik32v]

Wow it looks like there wouldn't be much gain with any other cam ill just have the spare cams custom ground