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Old 07-02-2016, 10:03 AM   #8
S/ST 3040
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Default Re: New Converter, Different Shift Points?

Quote:
Originally Posted by Adger Smith View Post
I have been dealing with customers for over 45 years that have the same problem you do. I call it testosterone poisoning. Some how the camshaft and cylinder heads are where this disease is usually found. The bigger is better disease. What you have is very little dynamic compression with the low static and the high cam duration @ 50. An engine does not operate on just static compression. the closing point of the intake valve vs the static and other engine parameters makes the dynamic. For instance I have a SS Modified engine that has 15.8 static and a 282 @ 50 cam shaft. Where I have the cam installed it pumps 225 lbs on the 4 th hit. It makes 2.5 hp per cu in. What we are all trying to tell you is the engine may be making hp at high RPM it is not making TQ with that long @ 50 cam and the low (relatively) static compression. That is why it likes the slipping converter. It take cylinder pressure to make power. In dyno terms it is BMEP and it usually happens around peak TQ. The trick to making real power is to extend/expand the RPM band of peak BMEP. To do that you need air and fuel to make the cylinder hotter. It is all about Heat and pressure. You need more pressure...Talk to your favorite cam guy, and no offense, not the minimum wage Cam Help salesman. The guy that knows what a cam does. don't start the conversation out by telling him the size cam you want. You already have the results of that. OK, you have my .02 I'm finished. It is late and my pillow needs some head...


I'm listening. Thanks for the input.


I will definitely look into experimenting with different cams. It sounds like it would pay to find a shop that has a dyno that will accommodate something besides a SBC. I've had a few members contact me with some helpful information and I appreciate that.
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