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Old Mar 23, 2007 | 10:58 PM
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cam knowledge

i have a 95 bronco. 351w. i bought a new cam for it. If i change the cam, anyone had good luck with any in particular? i found a cool kit that includes cam, timing chain and gears. double roller. and lifters. its from comp cams. any thing else i should change?
 
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Old Mar 23, 2007 | 11:14 PM
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I used the Comp Cams 268H in my 76 w/390 and it really did well. Only had issues with umbrella valve seals due to lift. Installed fresh seals and it resolved the problem.
 
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Old Mar 23, 2007 | 11:17 PM
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cool
thanks. i believe i just got a 250h. did u have any problems with emmissions? still pass smog? how did the low end feel?
 
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Old Mar 24, 2007 | 08:59 AM
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There are only certain cam grinds you can use and still pass emissions and run fuel injection easily. I'd contact company and see what they say. I bet that the emissions kit is more. There have been several posts on what cam grind is friendly to your needs Good luck
 
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Old Mar 24, 2007 | 03:40 PM
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I have to agree with Lostin... If you are under emissions rules, really watch the grind as too much will mess with both emissions and FI. The truck I used that cam in was "pre-emissions" and utilized a Edelbrock carb and stock cast manifolds. As for power, it hit hard at 1800 and pulled strong to 5,000. Damn thing got almost 18 mph at 90 when everything started working together.
 
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Old Mar 24, 2007 | 10:05 PM
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anyone know of a site to find grind number ranges?
 
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Old Mar 24, 2007 | 10:48 PM
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the grind # on mine is FW X4 250H-11. anyone know if itll be cool?
 
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Old Mar 26, 2007 | 08:50 AM
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whats the lobe seperation of that cam? and is your bronco running mass air?
 
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Old Mar 26, 2007 | 11:28 AM
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yes to mass air and seperation is 111 degrees
 
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Old Mar 26, 2007 | 11:28 AM
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Talking

Brand: COMP Cams
Product Line: COMP Cams Xtreme Energy 4x4 Cam and Lifter Kits
Cam Style: Hydraulic flat tappet
Basic Operating RPM Range: 1,000-5,000 RPM
Intake Duration at 050 inch Lift: 206
Exhaust Duration at 050 inch Lift: 214
Duration at 050 inch Lift: 206 int./214 exh.
Advertised Intake Duration: 250
Advertised Exhaust Duration: 258
Advertised Duration: 250 int./258 exh.
Intake Valve Lift with Factory Rocker Arm Ratio: 0.448 in.
Exhaust Valve Lift with Factory Rocker Arm Ratio: 0.483 in.
Valve Lift with Factory Rocker Arm Ratio: 0.448 int./0.483 exh. lift
Lobe Separation (degrees): 111
Intake Valve Lash: 0.000 in.
Exhaust Valve Lash: 0.000 in.
Grind Number: FW X4 250H-11
 
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Old Mar 26, 2007 | 11:30 AM
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hope that helps!!
 
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