Heads/Cam combo ?
01-05-2008, 04:06 PM
#22
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If the OP wanted an off the shelf cam that would match his heads I would use this cam from Crane http://www.cranecams.com/?show=brows...tType=camshaft . This cam is on a wide LSA for emission reasons (116*+ 5*), and not even close to ideal, but it still has a basic operating range from 2400-6400 rpm. Edlebrock's matching cam for their heads is also a single pattern cam: adv. duration 286*/286*, @.050" dur. 218*/218*, lift is .525"/.525", LSA 112* + 0*. The basic operating range for their cam is 1500-6500 rpm. With the lobes that I was useing I was getting peak HP at 6200 rpm. To enhance the mid to upper rpm's I would run a 1.6 ratio rocker arm. If the vaccum brakes would still function properly I would have run the cam with a LSA of 108* + 4* (ICL 104*). Regardless I would still go with a custom cam over a off the shelf cam.
01-05-2008, 04:31 PM
#23
If the OP wanted an off the shelf cam that would match his heads I would use this cam from Crane http://www.cranecams.com/?show=brows...tType=camshaft . This cam is on a wide LSA for emission reasons (116*+ 5*), and not even close to ideal, but it still has a basic operating range from 2400-6400 rpm. Edlebrock's matching cam for their heads is also a single pattern cam: adv. duration 286*/286*, @.050" dur. 218*/218*, lift is .525"/.525", LSA 112* + 0*. The basic operating range for their cam is 1500-6500 rpm. With the lobes that I was useing I was getting peak HP at 6200 rpm. To enhance the mid to upper rpm's I would run a 1.6 ratio rocker arm. If the vaccum brakes would still function properly I would have run the cam with a LSA of 108* + 4* (ICL 104*). Regardless I would still go with a custom cam over a off the shelf cam.
Manufactutrers recommendations for rpm range are usually lower than the LT1 will actually need, believe this is because they apply gen 1 rpm ranges when the LT1 intake shifts the powerband a few hundred rpms higher.
01-05-2008, 05:48 PM
#26
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Yeah, I tried plugging in some smaller duration lobes & some larger duration lobes to find a nice balance of the two with the heads being used. I know the Dynomation software is not 100% accurate but helps give a good idea of how things will work in the real world. I've spec'd enough cams to know where to start at and what to look for in my lobe profiles, and then I give all of my info to the head cam grinder and use whatever he thinks would be the best. I grade myself with what I had vs. what the cam grinder wants and have gotten very close to what he recommends consistantly now. The more I do, the lower the duration figures get for the street driven vehicles usually.
01-06-2008, 12:38 AM
#27
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And what is your experiance with cams?
Do you build your own motors? Or do you pay someone to build them for you.
Anyone can say this cam or this cam works because it did in my motor but the truth is no one cam will act the same in any two motors even if built with the same parts.
Do you build your own motors? Or do you pay someone to build them for you.
Anyone can say this cam or this cam works because it did in my motor but the truth is no one cam will act the same in any two motors even if built with the same parts.
01-06-2008, 02:05 AM
#28
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Sure I can Mike. I got the same results that you and the 96capricemgr Did with N2O. Am I on here putting you and him down because I did it with 1/2 the money? NO! Am I on here telling everyone, Hey your a jack *** because you did heads and cam when all you had to do is put a shot of N2O on your car.NO!
The question that 1bad00ss had is, what cam would go good with his heads.
Last edited by onephatZ28; 01-06-2008 at 02:25 AM.
01-06-2008, 12:49 PM
#31
And what is your experiance with cams?
Do you build your own motors? Or do you pay someone to build them for you.
Anyone can say this cam or this cam works because it did in my motor but the truth is no one cam will act the same in any two motors even if built with the same parts.
Do you build your own motors? Or do you pay someone to build them for you.
Anyone can say this cam or this cam works because it did in my motor but the truth is no one cam will act the same in any two motors even if built with the same parts.
Last edited by SS MPSTR; 01-06-2008 at 12:55 PM.
01-06-2008, 12:51 PM
#32
Sure I can Mike. I got the same results that you and the 96capricemgr Did with N2O. Am I on here putting you and him down because I did it with 1/2 the money? NO! Am I on here telling everyone, Hey your a jack *** because you did heads and cam when all you had to do is put a shot of N2O on your car.NO!
01-06-2008, 02:03 PM
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01-06-2008, 04:38 PM
#39
Like already stated I'd ditch the ported MAF for a stock one and yes those Edelbrock heads aren't nearly the best but hey there better than stock and I'd run them if they were already on my car or if I got them for free. I think off the-shelf wise the cc503 would be a decent choice because you could spin it to 6400-6500 and make pretty good power and run good times. I personally would get a custom grind spec'd for your heads and what you want performance wise, cant beat that.