These heads were released by Trick
Flow in 2015. I was lucky enough to get one
of the first sets. These are probably the
best horsepower per dollar Mopar big block heads
on the market. The casting itself looks like
a stock Mopar design but there have been key
changes made to the design during engineering.
The rocker shaft oil feeds are relocated and the
valves are longer, just to name a couple changes.
Trick Flow wanted a larger port with the ability
to use stock type components instead of expensive
head specific components. There job was well
done. These heads are the same high quality
Trick Flow's other cylinder heads.
These heads feature CNC machined
240cc intake ports, 74cc exhaust ports and 78cc
heart shaped combustion chambers. Intake and
exhaust ports are in the stock location and can be
opened up to Max Wedge port sizes by an
experienced head porter. Valve sizes are
2.19 intake and 1.76 exhaust. Trick Flow
offers four different valve spring and retainer
options for these heads which covers most
combinations that will use these heads.
Spring options include 1.46 dual springs with
steel retainers, 1.55 dual springs with steel or
titanium retainers and 1.56 dual springs with
titanium retainers. The components used are
good quality and the manufacturing process appears
to be spot on accurate. The fit and finish
of these heads is excellent. Because of the
design changes of these heads, stock pushrods and
head bolts will not work . Specific head
bolts are required which are available from ARP.
Longer pushrods are required and you will have to
measure the required length for your particular
The first engine I ran these heads
on was a stock short block 70s 440 out of a
motorhome. I put these heads on along with a
Hughes cam and Edelbrock Victor intake. I
even used the stock Chrysler shaft rockers.
The only special parts required were the specific
ARP head bolts and longer pushrods.
Independent airflow and dyno tests
have shown that Trick Flow is fairly accurate with
their airflow and horsepower claims. Some
have eclipsed the 700hp mark with these heads out
of the box, no porting.
At approximately $1980 for a set of
these heads, they are well worth the money both in
quality and performance.