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how to tell if i have a cam or not 

 

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 Post subject: how to tell if i have a cam or not
Posted: Wed Jan 17, 2007 4:03 am 
Oompa Loompa
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hey this might sound like a real stupid question but i've always wondered if i have a cam or not. it all started when i took my aunty's el for a drive and noticed that my ef revs alot harder once past 3000-3500. down low seems the same but my engine seems to open up just that litle bit more once in the higher half of the rev range. also lined my car up against a friends el xr6 and to 100k i was half a car length in front (noticed it pulled away from the end of first gear and into second) i mean it isnt much but it shouldnt be able to do that with the mods i already have. the only mods i know that i have are 2.5 exhaust with extractors, shift kit, and k&n filter.
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Posted: Wed Jan 17, 2007 4:34 am 
Getting Side Ways
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Last edited by blackjack_original on Sat Jun 07, 2014 12:25 am, edited 1 time in total.

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Posted: Wed Jan 17, 2007 5:07 am 
Oompa Loompa
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sorry bout that, i ment to ask if i had a performance cam or not :oops: my car gained that half a car length at the end of 1st and onto second, but we stopped at 100 so not sure if i would of continued pulling away.
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Posted: Wed Jan 17, 2007 6:26 am 
Getting Side Ways
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was the xr6 manual or auto?if its manual i'd say you have something else done if its auto its likeley you just have a frsher engine than other two cars.
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Posted: Wed Jan 17, 2007 6:40 am 
Oompa Loompa
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all cars are auto. the xr6 is an el (2.5 exhaust, k&n filter) and the other one tested was an el fairmont(stock). both cars newer and less kays than my ef fairmont.

What are the main characteristics of an aftermarket cam?
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Posted: Wed Jan 17, 2007 8:33 am 
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TriOle wrote:
What are the main characteristics of an aftermarket cam?


Depends which cam...

Only way to tell is to ask previous owners, or remove the rocker cover and rocker gear and see if there's any markings on the cam.

 

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Posted: Wed Jan 17, 2007 9:19 am 
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Bigger lumps on them.
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Posted: Wed Jan 17, 2007 9:52 am 
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twr7cx wrote:
TriOle wrote:
What are the main characteristics of an aftermarket cam?


Depends which cam...

Only way to tell is to ask previous owners, or remove the rocker cover and rocker gear and see if there's any markings on the cam.

Wade and a few other guys stamp the grind on the rear of the cam, you'll need a little mirror to see it if you leave the cam in the car, it's right up against the firewall.

 

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Posted: Wed Jan 17, 2007 10:12 am 
Getting Side Ways
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In the absence of visual markings, pulling the cam and having its specs measured would be the only way to 100% verify.

Can do some basic tests, like measure vacuum at idle and compare it to a stock reading (even that can be affected by other issues)...

 

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Posted: Wed Jan 17, 2007 10:16 am 
Getting Side Ways
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I have those mods you mentioned. And the EL intake to throttle body on my EF. But I put in a 2" exhaust section from the single muffler back to cut the drone noise. Now it's quiet with normal drivng but growls loudly when I step on the gas. Mine revs beautifully with ECON off. Really pulls, but I only have a standard cam.
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Posted: Wed Jan 17, 2007 10:21 am 
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4.9 EF Futura wrote:
In the absence of visual markings, pulling the cam and having its specs measured would be the only way to 100% verify.

Can do some basic tests, like measure vacuum at idle and compare it to a stock reading (even that can be affected by other issues)...

Could measure valve lift off the rocker with cam still in the car, and compare to stock specs, easiest way if it's not stamped.
Would at least let you know whether it is aftermarket or not.
If you know the cams lift it also puts you in a very large ballpark of what grind it might be :lol:
If it is aftermarket, unless you plan on wanting more, I wouldn't bother taking it out to get measured.
If it goes good, it goes good :D
Just tell people you've got a "Stage 2" cam :lol:

 

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Posted: Wed Jan 17, 2007 2:50 pm 
Oompa Loompa
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thanks people, dont think i have the time to take it out and check i guess its somthing i'll never know, feels good knowing its quicker than an xr6 though :lol: who knows i might have caught the fast ford bug, and want to make it more quicker
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Posted: Thu Jan 18, 2007 2:20 am 
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i think people are missing the beat here.
a car with exhaust mods will be quicker than an xr6, xr6's dont have a big advantage against stock
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