TOPIC:

I purchased a set of cams and was told that they can be used for either the exhaust or the intake. Does this sound right? Both cams have the worm gear for the tach drive, but I was told that it didn't matter. Have I been taken for a ride here or what? I need to sell these cams now and don't want to mislead the next guy who may get these. They are brand new Web cams.
Thanks!

No, no ride.
Same profile on intake and exhaust is common.
-Duck

What was the Web grind that has a worm gear ground on both 'intake' and 'exhaust' cams?

Are you asking me about web product or 79MKII about the specific grind he's got?

I can answer abotu the product.

Worm gear has nothing to do with cam profile. Web takes donor cams, builds up, and regrinds. Intake and exaust with same profile is common on inline 4 and 6 DOHC engines. Historical use of the modified shaft is not relevant unless worm gear is needed for new aplication.

-Duck

running a slightly bigger camshaft on the exhuast side can help make up for a less efficiant head,just make sure to watch clearances. goodluck,happy wrenching!

I'll check the grind numbers and post later, but what I was mainly concerned about is whether or not it is OK to use a cam with a worm gear on the intake side.
Thanks

Post edited by: 79MKII, at: 2006/02/08 12:41

There is nothing on intake side to interefere with the gear so it's not a problem. I assume you were told either could be used in either place because they are the same grind. It's ALWAYS best to measure stuff though. Even new parts from big name sources can be wrong right out of the box. Even more so for used/handled parts.

-Duck

Actually, they are different grinds. If I remember correctly they are .435 and .460 with a 1" base circle. Both cams have the worm gear so I wasn't sure if I could sell them as a set or if I'd have to sell them as two separate exhaust cams. I'll post the grind numbers and info when I get a chance (at work now:angry: )

back in the day, thats the way I bought/used all my cams, Ex. only,when its time to sell em they sell better that way,as you can pair them up like you need em,that 460 cam is usually sold with a 480 intake, they rock!

the 435 could be paired with another 435 to make a set for a small engine.

the set you have needs 1135-1260cc 13.5:1 to work good. should run 9.20's with a good head.

the 1 inch base circle will mean you will have to sink your valves deep in the head to be able to shim/degree em right.

just because there is a worm gear for the tach drive on both cams dose not make a diffrence. it just means you could use either one on the exhaust side. buy the way what are you asking for them?

Post edited by: rattler, at: 2006/02/08 15:44

OK, the grind numbers are 231 (.470 lift) and 125 (.435 lift). Both are definitely 1.000 base circle. The 231 cam comes standard with the 1" base circle, but the other was special made to be a 1" base circle. In addition to the grind number it has a "1.000" stamped on the end. It sounds like it would be fine to use either cam on either side (int or exh). Thanks for the info!

Hey Rattler, I'll send a PM with the price. Thanks.

craigpuckett wrote:

the 1 inch base circle will mean you will have to sink your valves deep in the head to be able to shim/degree em right.

The stems need to be .055" higher up in the head to use the 1" base circle. Sinking the valves that far is a bad idea unless they are both so big that you have to sink them to get the minimum distance between them so they won't hit each other.

If that is not the case, then using blank stem valves and finishing them with the longer stems is the right way to do it.

Jay