From a Daryl Drummond dyno sheet for a 12A bridge ported running 36MM
chokes. One per housing.
6,500 RPM 139.6 Torque 173.3 HP
7,000 RPM 147.6 Torque 196.9 HP
7,500 RPM 152.6 Torque 218.2 HP Front EGT 1518/ Rear EGT
1492/ BSFC .671 oil 164/ pressure 100.1
F/A 12.1
Main 210/ air .80. A Pport with a slightly larger choke would better. A
13B Pport would do still better.
A 13B Pport injected would do much better.
Lynn E. Hanover
Lynn,
I was going to suggest we hear from you, those figures fit nicely with
what I've heard and although the bridge port is bigger again than the street
port, I figure the bridge ported 12A might equate to a street ported 13B
41/44mm choke. Those figures with a 36mm choke is right up there at the top I
would assume.
Good stuff!
George ( down under)
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