MustangWorks.com : Ford Forums - View Single Post - is there any difference between 351C heads and 351M heads

NO SLO PK · 03-09-2001, 11:22 AM

The 351M heads are definitely not performance oriented. If memory serves, breathing and low compression were the major drawbacks. You might want to send a PM to Unit5302. That guy knows a lot about heads from that vintage.

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'91 LX
Procharger, 3 row intercooler, extrude honed Cobra intake, Mac full Length Headers, 30# inj., 73mm C&L, 75mm tb, E303 cam, 289 rods, ported E7 heads, MSD, T-Rex w/255 lph Walbro, 5 lug conversion, Cobra R wheels, 3.27 gears and Moser Axles.

03-09-2001, 11:22 AM	#3
NO SLO PK Registered Member Join Date: Mar 1999 Location: Arcadia, CA, USA Posts: 731	The 351M heads are definitely not performance oriented. If memory serves, breathing and low compression were the major drawbacks. You might want to send a PM to Unit5302. That guy knows a lot about heads from that vintage. ------------------ '91 LX Procharger, 3 row intercooler, extrude honed Cobra intake, Mac full Length Headers, 30# inj., 73mm C&L, 75mm tb, E303 cam, 289 rods, ported E7 heads, MSD, T-Rex w/255 lph Walbro, 5 lug conversion, Cobra R wheels, 3.27 gears and Moser Axles.