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Author Topic:   shopping for a cam
Eljojo
Dirt Forum Champ
Total posts: 968
posted July 08, 2005 03:57 PM  
Depending on what time of day, what phase the moon is in, or whether the salesperson has had their third cup of coffee, I get "cam help" that's all over the place. I get asked for the specs on camshafts that "don't" work! I'm over it! The other day I found a camshaft that was very similar in lift and duration to the one I have now, only it called for the valves to be set at .030/.030 instead of .018/.020 what's up with that? Not a tight lash cam, but what does that mean? Anyone want to take a stab at giving me some good honest directions?

sc1 racing
Dirt Freak

Total posts: 419
posted July 08, 2005 04:33 PM  
diff durations call for differant settings, as well as lobe centers..

i may be able to help depending on what you are looking for.. i dont go by what people say works. i go by what i try and can feel in my seat or see on the videos..

autoshop
Dirt Freak

Total posts: 298
posted July 08, 2005 07:27 PM  
if you look at differant cams one thing in common they always advetise the duration at .050 .Most are pretty close to being the same what i look for is the opening and closing events ,If you look at this you will see a big differance in most cams.Diffenance cam makers use the lash to fine tune their products. Most tight lashes are .018 to.020 The one I run is .014 .I've run Reed Cams in the past and they have been the best for me but they use a @.020 duration height as there avertise duration and it's a little differant than the other cam makers.

nine finger
Dirt Forum Racer

Total posts: 76
posted July 17, 2005 05:33 AM  
go off of the duration at .050 i really could care less about lift within reason. duration controls how the motor acts period!!! i really hate it when people start out a conversaion like, should i run a 450 lift cam. after duration look at your lobe centerline. almost all of my dirt motors run a 106 centerline. then i almost always advance it 4 degrees. if you are running a street stock start around 230 at .050 if you really like to turn your motor go about 240 duration at .050 lift. i prefer comp cams but buy what your comfortable with. do not try to run cams on stock springs. if you call comp cams and reques that they grind it 4 degrees fast then you install it straight up and it will be installed 4 degrees fast.

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