keyman Posted April 28, 2014 Report Share Posted April 28, 2014 Trying to decide what to use on a 3200# streetstock. I have an Edelbrock 2101, a 7101 and an aluminum Qjet stock manifold that will get me a 50 lb weight break. Don't turn a lot of rpm (3000 to 6000) Quote Link to comment Share on other sites More sharing options...
Danielsen Motorsports Posted April 28, 2014 Report Share Posted April 28, 2014 (edited) If its the shootout rules either manifold 2101 or stock aluminum doesnt include a 50 lb penalty. I would go with the 7101 myself between the three and take the high rise penalty. Edited April 29, 2014 by Danielsen Motorsports Quote Link to comment Share on other sites More sharing options...
keyman Posted April 29, 2014 Author Report Share Posted April 29, 2014 Guess I need to ask more questions, thought "high rise intake" would include 7101(and 2101). But in my defense I've been going over both rule books trying to figure out a good compromise that will work for CBS and STSSS while I'm building a sportmod so I get confused sometimes.. Thanks Stephan. I would still like to know what the difference is between the 2101 and 7101. Quote Link to comment Share on other sites More sharing options...
jwmbishop Posted April 29, 2014 Report Share Posted April 29, 2014 Check PMs. Its floor (plenum) volume and runner volume (and cross section). The more RPM you will turn - the larger the runner you need to keep adequate air flow in. The larger the runner - the lazier the flow at low RPM - more fallout, more conglomeration (atomized fuel becoming large droplets). Quote Link to comment Share on other sites More sharing options...
keyman Posted April 29, 2014 Author Report Share Posted April 29, 2014 thanks Quote Link to comment Share on other sites More sharing options...
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