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Kegracing · 03-07-2010, 12:12 PM

Rod,

Most all calculations make the "assumption" of 100% efficiency. This is what causes some errors. Often what cars require and what they want are two different things. Your combo may only require 600 cfm, but is the 600 DP going to give you 600 good cfm? The 750 can do that a lot easier... While I am a stickler for matching a combo, as I have proven to myself over and over that more is not always better, this is not going out to left field. If you were talking about putting a 1050 on it, I would say no way. But a 600 to a 750 is a pretty easy to justify swap.

Put the 750 on it, and then jet it for the best performance. Just my opinion...

Good luck!

Ken

03-07-2010, 12:12 PM	#2
Kegracing Member Join Date: Jun 2002 Location: Red Oak, TX Posts: 441 Likes: 0 Liked 0 Times in 0 Posts	Re: carb. CFM ?'s Rod, Most all calculations make the "assumption" of 100% efficiency. This is what causes some errors. Often what cars require and what they want are two different things. Your combo may only require 600 cfm, but is the 600 DP going to give you 600 good cfm? The 750 can do that a lot easier... While I am a stickler for matching a combo, as I have proven to myself over and over that more is not always better, this is not going out to left field. If you were talking about putting a 1050 on it, I would say no way. But a 600 to a 750 is a pretty easy to justify swap. Put the 750 on it, and then jet it for the best performance. Just my opinion... Good luck! Ken