I run an 825 CFM Race Demon on my 347, but selected that size based on the engine Dyno results. Refresh my memory, does the Speed Demon come with jet extensions and what size shooters are in there? For your after market components the size seems about right.
Ron
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65 Mustang Fastback
347 Stroker, C4 with 4.56
10.68 @ 122 N/A
9.74 @ 137 w/ N2O
www.fastspecialties.com
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