Eric: 11/6/2000 - 1/1/1900 1:44:00 PM
Adjustable Cam Gear
Has anyone used the adjustable cam gear that is now being offered by Red`s Headers? What is the advantage of it? It said it can be adjusted + Or - 3 Degrees and it cost $79.99. Thanks for the info!

JWL: 11/6/2000 - 1/1/1900 3:03:07 PM
RE: Adjustable Cam Gear
Yes, I have used adjustable gears. The minimal affect associated to a 3 degree adjustment would only be useful in rare circumstances. There are so many other factors which make up a good running combination this one is not usually worth much attention. The change from one end to the other would probably raise or lower the power curve less than 500 RPM.

Buzz: 11/6/2000 - 1/1/1900 3:09:37 PM
RE: Adjustable Cam Gear
I think you need at least 8 degrees +- to make it worth wile

Ron: 11/6/2000 - 1/1/1900 5:59:23 PM
RE: Adjustable Cam Gear
I`ve used these during my stock car days and found that there were too many other variables to notice the deferance IF big IF the cam was ground right in the first place. Remember all this porting valve work cam timing, etc. are only efective at full throttle. Keep'm runnin Ron

Red: 11/7/2000 - 1/1/1900 9:54:31 PM
Adjustable cam gear
If you want your cam timing to be correct, what either you or the cam grinder has specified, often you have to change its relationship to the crankshaft. Since with 44 teeth, each tooth is worth 8 degrees, with a + or - 3 degree vernier gear you can get 3 or 5 or 8 or 11 etc, degrees. This is a lot easier than elongating holes and then putting in a dowel. The price is `just` $79.

JWL: 11/7/2000 - 1/1/1900 10:37:25 PM
RE: Adjustable cam gear
In the interest of preventing confusion, it should be mentioned that one tooth is worth a little over 8 degrees at the cam, but at the crank, where the cam timing events are measured, it is about 16.4 degrees.

Red: 11/8/2000 - 1/1/1900 11:37:21 PM
RE: Adjustable cam gear
Guilty as charged. I have been using cam degrees, not the standard crank degrees, because I was talking about the cam gear. The adv or retard is 3 cam degrees, 6 c/s degrees. I was trying to keep it simple, honest. In any event, the changes approximatly split the space between teeth in thirds. Red

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