Originally Posted by excelerater
I havent heard about it but
everyones just keeping up with the jones's
and in this case a BMF385 I would guess
wrong, .. there's much better conventional style BBC heads available, ..
Dart does a CnC version based on their 360 race casting that is
a VERY, Very good head but it doesn't get the press some others do, ..
it's also the fastest head in Texas pro stock right now, ..
Edelbrock Victor 24* with it's moved valve locations is a REALLY
good head when properly ported, . . likely make more power then any, ..
Long thread over on Speedtalk about all the testing Larry Meuax did with
it, .. well over 1000 hp.
Brodix BB-3x is a great casting and also makes some serious power
when properly ported.
At any rate on the original question,.. I haven't seen a set yet, ..
but it would be my guess it's not an "upgrade" of the 355 per say
but likely a new Port offering.
The difference between 355cc port and 380cc port would be rather
large in the ports' Cross sectional area, .. and that sets air speed.
The cross sectional area and air speed are really how heads are designed
much more then just flow numbers, .. and the air speed gets matched
to the intended application.
My guess would be the 380 cc port has a cross section around 3.8 -3.9"
and that would make it designed for a 565" to around 598"
are you running a dragster or light car?
Curtis