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Discussion Starter #1

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The split duration if you want more chance of hearing it. It also has teeny bit tighter LSA so with the extra exhaust duration and the tighter lsa you get more overlap which is what causes the cackle. The cackle we love so much is actually the engine not running worth a ****:D

Idunno on the computer end, but the single pattern says 350/TPI in the description down to the bottom area.

Is this a 305 engine?
 

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Please get into the cam e-cats and look in the Computer Compatable Cam sections and compare several from different companies b/c this get's a little may I say, "touchy" b/c of the brain..

I know Crane has their line of CompuCams and I'm sure CC does too as does Crower w/ their "several levels" list of cams..

Sure don't want to steer you wrong here is all. Best ta do the homework before dropping the dime, imho..

pdq67
 

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You need a cam that is compatable w/ the brain, not one that SOUND'S NICE!!

This is why I'm advising you to DO YOUR HOMEWORK!

A "cackling" cam will screw a brain up big-time b/c it's not sucking properly ALL the time!!

Sure, it will be fine once it's "up on the pipe" as the 2-stroke guys say, but you will still need to idle around and that's where you can get in trouble the LITTLE I know about brains...

I'm strictly a carb. guy.

You want "cackle", pull a sparkplug wire off and ride the brakes!! Then after you get finished going around Burger King, stop and put the plug wire back on and go home!!

Been there, done that......

pdq67
 

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You want "cackle", pull a sparkplug wire off and ride the brakes!! Then after you get finished going around Burger King, stop and put the plug wire back on and go home!!

Been there, done that......

pdq67

LMAO pdq.:D

You need Chris Straub to come tell you a cam or at least somebody who has done a ecm'd cam job. I never fooled with a cam in a pewterized engine.
 

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Computer cams are generally under 220°@.050" and have more than 114° LSA or more, single pattern.

Vacuum has to be high so the MAP sensor sends a higher signal and the ECM reads it as a high vacuum and the fuel map runs accordingly, hence, a smooth running engine.

Call the cam company for a more precise selection. Otherwise, you're looking into reprogrammed chip or a programmable aftermarket ECM.
 

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Discussion Starter #14
I am not looking to have a "cackling" cam. I want it to still sound close to a stock idle. How would the computer react to the 112 LSA?
 

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How would the computer react to the 112 LSA?
Not very well, if at all. 114° LSA is about the limit with a Federal emissions stock ECM/chip/program.

GM's 454SS truck, sounds like a real BBC, but has 116° LSA generate plenty of vacuum.

Call the cam company, they will know.
 

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Discussion Starter #17
Well i bought the 212/212 .444 .444 112 LSA cam. I found an article somewhere saying that this will be fine for a computer controlled engine. However, from the people that say that this cam wont work with the computer, what do you mean it wont "work". What would be wrong with it?
 

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Whose cam is that??

And what's it's complete spec's?

CC's 260/212 is on 110 centers and is only .440" lift.

pdq67
 

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Cool!!

Thanks, they are calling it a 350 T.P.I. cam.

I'd thought hard about Crane's slightly smaller @ .050" duration CompuCam 2040 spec'd at;

270/210/276/216, 114/109, .440"/.454" lift only b/c of the wider LCA and it being a split duration jobber is all.

This said, you will probably make slightly more torque some earlier b/c the CC cam is 260/212. But I do figure the 270 cam will carry it's power a bit higher so it's a trade-off to me??

And thanks for doing your homework b/c us guys really hate to see anybody use the wrong cam b/c his power/driving expectations generally take a beating..

Been there, know about that......... 292/230 cam in my 406 is too big for my 9.5 to 1 CR is all..

pdq67
 
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