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Old December 2nd, 2016, 07:06 PM
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Join Date: Mar 2015
Location: Cave Junction, Oregon
Truck: 1964 GMC 1500 LWB Wideside 305E V6.
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Default Re: Proper sized exhaust

Quote:
Originally Posted by bigblockv6 View Post
While calculations show 500 CFM to be overkill on a 305 running at factory designed engine speeds, as with many things, calculations do not represent real world results. More than likely, the same engine with a 500 CFM carb will make more horsepower than the same engine with a 350 CFM carb, or the factory carb.
[/QUOTE]Turbobill. I fully agree with you on that Years ago I tested all 3 of these carbs on my 68 305E and the Holley 500 was still by far the top performer, it's all about the real world results[/QUOTE]

Exactly!!!! Math results aren't Everything.

According to Math the small 2 stroke chainsaw engine is not supposed to even run. BUT! They run very well and very efficiently. Real world is what matters.

Math would show that my 600 edelbrock 4 barrel would drown my 305 out, yet it performs rather well!
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1964 GMC 1500 305E/sm420 4 barrel intake mod and dual exhaust.
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