They both have similar #s, isky 236/246 comp 236/242, the only difference between the 2 cams is that the comp has ICL of 106 where as the isky is 110. Both cams are ground on a 110 LSA. MY question is, is there an advantage of the ICL being the same as the LSA?

Thanks,
Jeremy

 

Do you know what the valve timing degree numbers are? That's a big variable that makes a different in the power.

 

Ok here is the timing the Comp is at .006 and the Isky at .020. These are the only #s I have right now.


Comp
Intake o/c: 38/70
Exhust o/c: 81/33

Isky
Intake o/c: 31/71
Exhust o/c: 77/37

By the was the isky is 234/246

 

Get the Isky. Isky cams always tend to make more power. I've never heard a bad experience with dealing with Isky. Can't say the same for others including comp cams.

 

Isky is a good ole boy, if you work close enough with him then you get what you want. Personally I would rather go with the company that wins those races, COMP. The most complex valvetrains on race engine V8's in the country are on NASCAR Winston Cup cars, and who is 42 out of 43 cars? Comp. Those guys have great minds doing quality work there and they are who I work with. It's just me, but I do think Isky is where they are because of advertising and not product, and I'm 24 and have even seen the old 5th cycle B.S.

Bret

BTW the Jew part was probably not appropriate!

 

All I was asking was if there was an advantage to having a cam with 4 deg of adv ground into it compared to a cam that has none. Anyone else have comments?.......or stories

 

The post with the offensive ethnic slur has been removed, along with the followups. "Totenkopf" has been requested to refrain from this kind of stuff.

I apologize that I wasn't here to remove the post immediately.

Fred

 

I obviously misunderstood what you were asking. No there is no advantage. They both could be installed "straight up" with no advance. Since the cam is connected to the crank, the cam can be adjusted forward or backward, which would change the installed centerline angle. I would recommend calling both cam companys cust service and asking the same questions to both and ask for a recommendation based on your combination. i believe this will let you know who you'd most like to deal with. And as for the guy who said he'd rather have the company thats used by more winning cars, I say I'd rather have the company who's parts are actually in the car, not just have the decal on the side. And last I knew, from recent circ track mags, nascar uses isky springs and retainers almost exclusively! Even the cars with the comp cams decal have Isky parts inside. And they grind their own camshafts or at least have them ground to their own "secret specs". You may say its because of the ads but I contend that comp cams spends 10 times as much on ads and endorsements. Lingenfelter was a comp cams endorser but guess what, he grinds his own! Hmmm... if they were so great, why didn't he use them? I think Isky got to be a legend because of all the legendary drivers who they helped propel. Don Garlits used isky cams till the end. I don't think he was just fooled by adds!

 

As far as I have seen.. the walrus is purty accurate.. those guys run a decal and thats it. Aside from that, they run whatever the hell they think will make power. Whether comp, crower, isky etc. grinds some of our race cams, itll be OUR lobe.. so what does it matter, provided their processes produce something within tolerances?

I think the advertising fluff argument is pretty funny... the only one I know of spending all their $ on advertising is Comp...

As far as what cam to run.. methinks it depends on the rest of your setup =P. Either one should make good power really.. but it depends.

 

walrus108:

if you changed the ICL of the comp wouldnt it change the timing of opening and closeing of the valves and therefore change the power curve and peak power?

 

About the NASCAR thing, yeah they can use Isky Springs. All the companies get their springs from the same people anyways. Let's see, there were alot of teams grinding their own camshafts a few years ago, guess what? They found out that Comp knows more about it than they do. Guess who just switched back to Comp, and who used to grind their own? Roush. Yeah the cat in the hat found out that they can't do it better. It's not jsut the cams but look what team has more drivers in the top ten in points this year? Sterling Marlin's team (Ganassi) uses Comp and so does Joe Gibbs. I have a feeling that Comp will win the champsionship.

The problem is that the teams don't have the guy or the knowledge or the machines to do it as well as Comp. Period. You really think that the physics of lobe design any ole ape can do? There is far more physics in that then anybody on this board wants to get into, or probably can. We are talking about V, V^2 (A), V^3 (JERK), V^4, V^5, all of these have alot to do with making that flat lifter stay on the lobe and not break, bounce or destroy itself @ 9500rpm. That's just the design, the parts such as the camshaft are run on an old dynosaur of a machine, but it and the operatior are the best cam grinders in the country. BTW that old machine is used exclusively for Winston Cup Cams.

The top 20 in the Daytona 500 are Comp, if you have ever heard or spoke with some of their design talent then you would know why they are so good.

As far as advertising goes........ Who puts out the B.S. adds? Crane, I mean come on they take two cams and say, this one made more power. Yeah that sells cams, but it has nothing to do with what is really going on. Comp could do the same thing back. They don't, you never saw Comp adds untill recently. Between them and Schrick they do the most high end racing camshafts in the world. Period.

I'm not saying Isky is all adds, but I find it hard to believe that they have the stuff behind them that Comp does.

On top of that Top Fuel cams are not that hard to do, the engine runs at one RPM making max power there and the clutch catches the car up to the engine. The stuff the NASCAR boys is doing is the craziest stuff in the county. BTW the NASCAR boys have to prove the parts behind the Decals, they get tore down and those companies know what's going on and who is using what. You don't get contigency money for a Decal.

Sorry about the rant. Comp has helped me alot and I just feel like sticking up for them.

Bret

 

The whole point of the different ICL is that you get the intake valve to close at the right point. If the lift is the same on the two cams then buy the cheaper one and degree that puppy in. If the lifts are different buy the one with more lift then you will get more area for the duration you are using.

Bret

 

Noone's bashing comp, everyone uses a ton of their stuff, but they arent the end all be all, and not all of your info is correct at present moment from what I've seen, but i'll keep my mouth shut b/c it's irrelevant and I probably shouldn't say anyway what the Charlotte, NC based teams are using.

Whether this guy gets the cam from comp, crower, isky, lunati, etc. they can all probably figure out a grind that will make satisfactory power in a streetcar. Who cares who it comes from? How'd a question about two different sticks get turned into some silly "I think comp is the best so screw you guys!" thread...

 

I don't know?

Shoot me a e-mail with that info. When you see the teams that are running at the front this year and you see the guys running Hendrick Engines which had the parts break in all of their engines. Either way it's interesting.

 

So if I ever get #s for both cams at .050 should I compare them there or with the advertised timing #s?