351M???

[COBRA406]

I have a 400 in my Cobra. Your block, if it is indeed a 351M/400
(no M designation in the 400), and if it has cast in both a large
and small bellhousing bolt pattern, it what is referred to as an
FMX block. Only 1973 and it is rare and in demand with the
puller truck crowd. I wanted a different mill in my car. These
engines are pigs stock but are a cleveland design and most
speed equipment from the C will work, cams, 4V heads,
timing sets and pistons (with bushed rods). The truck crowd
is getting unbelievable HP out of them and TMI in MI. is
offering stroker forged cranks and pistons for them. I am running
70 quenched 4V heads with spacer plates (NO good intakes
are available) with a Blue Thunder Cleveland intake, forged,
balanced, and blueprinted engine with roller rockers and
mallory ignition. Its a torque monster and I will tell you, it can
be built for a song. Not everyone's cup but I like a different
set of rules. THe quenced 4V heads really wake up the long
stroke tall deck engine and the competitive puller truck crowd
is getting enormous HP out of these.
THanks.