In MM&FF june issue the GT-40 beat the GT-40p throught the entire range for intake and exhaust.
For comparison, my GT-40 irons (Fox Lake, stage III ported) peaked at 241cfm int@.600
and 198cfm@.600! These heads really like a port job but the iron is hard to port and a job like this costs a pretty penny.
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GT-40 heads (ported, polished, + milled), B303 cam, 1.7rr's, JE pistons, Offy intake, Carter AFB 625cfm carb, Flowtech 1 5/8" shortys, Flowtech X-pipe, MAC Flowpath exhaust, MAC pulleys, 373's, subframes, Eibachs+Tokicos, B&M ripper, FMS Clutch, Zoom Quadrant+cable, 17" CSA Ultra rims, 235/45ZR17 Yokohama AVS S4's, MSD 6A ignition+coil, FMS 9mm wires, Carbed, Naturally Aspirated, and Nasty!
[This message has been edited by red82gt (edited 06-05-2001).]
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