heads and cam shaft question for max hp

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Dec 2, 2008 | 06:18 PM

#21 (permalink)

MD SRT6

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From: Maryland

Re: heads and cam shaft question for max hp

Quote:

Originally Posted by Bulldogger

Engines are engines,which are basically air pumps the more efficient the more hp/tq they make, the crossfire is not an exception, you are more limited by by the ECU and traction controls (which probably won't be figured out at this point),along with only one other gear choice which you can get from the NA cars which is slightly different. I see you also use your car to test atmospheric pressure,

Just say you use the track for a testing bed, and I don't really care that your car can beat Z06's you seem to miss the point as usual. The Dyno showed very little gain which translated to no change in track times. Supercharged cars don't respond to the head work like NA cars with the air being constantly forced in you will probably only pick up 2% more flow, and that won't change track times. But as usual since you are the self proclaimed most knowledgable, what was the difference in tract times from non ported to ported heads only?? Not including supercharger porting and gasket matching.

I'm not trying to debate you on this issue, I was just stating my personal results and disagreeing that head work is not a worthwhile mod.If you would have read my complete post you would have seen that I don't have a lot of dyno sheets as I use the track as my "barometer". And by no means am I proclaiming myself as an expert on all these issues I'm just speaking of what I got out of my modifications. By the way a tract is a measurement of land

And as Forrest Gump said "That's all I've got to say about that"

Dec 2, 2008 | 07:21 PM

#22 (permalink)

Bulldogger

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Re: heads and cam shaft question for max hp

Quote:

Originally Posted by MD SRT6

And as Forrest Gump said "That's all I've got to say about that"

I think with the 3 valves per cylinder, 2 being on the intake runners straight below the supercharger, there just isn't much to be gained. I would say you will gain some but not 2 tenths or more. I really personally doubt even a tenth. As to why you car is fastest so far, has yet to be determined. I'll have my car done for ATCO in NJ and I'll see what it actually does. My mods are a little different, LET tune and SL-55 intakes, my own modded plenums. The 181 pulley and rear cat delete exhaust are similar to yours. It will be interesting to see. Maybe I'm wrong with the head work but time will tell. A good indicator of how well the head porting worked would be seen in a drop off in boost. This would be due to illiminating restriction. I don't know if you had gauges at the time on not. I'm not here to argue with you. It is just that the new style heads today with the 3 and 4 valve set ups are pretty good out of the factory and don't really benefit like the older style heads.