LGM cam install... do I need to degree the cam? Does anybody?
12-23-2006, 09:38 AM
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LGM cam install... do I need to degree the cam? Does anybody? None of my buddies have used a degree wheel... everyone installs dot to dot. All the how-to's on line go dot-dot.
I was planning on slipping it in and being good to go.
?
I was planning on slipping it in and being good to go.
?
12-23-2006, 10:56 AM
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All degreeing it does is verify the accuracy of the nominal cam specs. If you have the dial indicator, and want to take the time, go for it.
Or, for $25, send the cam to Thunder and let them cam doctor it, you'll get precise measurements of the lobes, with all the duration, lift and valve event specs you'll ever need on a computerized printout. . I had my X4 doctored.
Either way, without an adjustable timing set, there's nothing you can do about adjusting it in the unlikely event it was ground slightly off..so you'll still just stick it in dot-to-dot anyways.
Or, for $25, send the cam to Thunder and let them cam doctor it, you'll get precise measurements of the lobes, with all the duration, lift and valve event specs you'll ever need on a computerized printout. . I had my X4 doctored.
Either way, without an adjustable timing set, there's nothing you can do about adjusting it in the unlikely event it was ground slightly off..so you'll still just stick it in dot-to-dot anyways.
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12-23-2006, 04:32 PM
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Originally Posted by Thimble
Either way, without an adjustable timing set, there's nothing you can do about adjusting it in the unlikely event it was ground slightly off..so you'll still just stick it in dot-to-dot anyways.
12-23-2006, 04:47 PM
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Originally Posted by Thimble
Either way, without an adjustable timing set, there's nothing you can do about adjusting it in the unlikely event it was ground slightly off..so you'll still just stick it in dot-to-dot anyways.
Shoot... I got the cam from LGM b/c they're known for quality and accuracy.
12-23-2006, 05:04 PM
#12
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Real simple - if you are careful and line it up dot to dot, and the cam is cut correctly - which is probably a better than 95% chance - you'll be just fine. If you want to be absolutely certain that it's right and that you installed it right - degree it.
12-24-2006, 12:12 PM
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Originally Posted by Meegle
Chances are the cam itself is ground correctly. It would be the keyway in the crank and/or the crank sprocket that could alter the timing specs if off ever so slightly.
12-24-2006, 12:27 PM
#17
Originally Posted by N4cer
Why don't they show it? We found the ICL using a degree wheel and a dial indicator on my G5X3. Surely Thunder Racing can find it.
Also, if your PTV clearance might be questionable (milled stock castings or an unknown amount of milling to used heads) you'll want to degree the cam and check clearance. IIRC, LGM cams are ground 4 degrees advanced. To tight of an intake clearance can sometimes be resolved by retarding the cam a couple degrees.
12-24-2006, 12:37 PM
#18
There's non-adjustable then there's incrementally adjustable and finally there's infinitely adjustable. If you degree the later two will help, but not the former and only the later of the later if you want to be accurate which is what degreeing is all about in the first place.
12-24-2006, 12:39 PM
#19
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Originally Posted by hammertime
Intake Centerline is relative to the crankshaft. A Cam Doctor can't tell you anything about how said cam is installed in the car. If your timing set is off a bit, then your ICL could be advanced or retarded from where it is supposed to be.
Also, if your PTV clearance might be questionable (milled stock castings or an unknown amount of milling to used heads) you'll want to degree the cam and check clearance. IIRC, LGM cams are ground 4 degrees advanced. To tight of an intake clearance can sometimes be resolved by retarding the cam a couple degrees.
" only a fool orders a cam with any advance ground in
"
12-24-2006, 05:11 PM
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Originally Posted by Cobra4B
Well there you go... sticking w/ an LS2 chain and the stock sprockets. Thanks for the anser Tom.
Shoot... I got the cam from LGM b/c they're known for quality and accuracy.
Shoot... I got the cam from LGM b/c they're known for quality and accuracy.
54-000-11 lobe/lobe lsa