2011 - Crane Cams

1969-1993 351 (5.8L) cu.in. Windsor and 1982-
1984 302 (5.0L) cu.in. H.O., also 1994-1997
351W, and 302 SVO/351 SVO V8
Another derivative in the Windsor family, the 351 engine
blocks incorporate 1.3” taller deck heights to accommodate
the increased displacement. Lifter bores are still inline, as
are the valves in the cylinder heads, and the 1.6:1 rocker
arm ratio is retained. Most notably, the firing order was
changed to 1-3-7-2-6-5-4-8. Our 44 prefix designates these
engines. The camshafts are dimensionally the same as the
36 prefix, with the different firing order being the primary
change. Camshafts can be interchanged, providing the necessary
changes are performed for the proper firing order.
Additionally, the 1982-1984 302 H.O. engines also were
equipped with hydraulic lifter camshafts having this revised
firing order.
We offer hydraulic, hydraulic roller (retrofit and OE style),
mechanical, and mechanical roller camshafts and a wideranging
line of valve train components for these engines.
From 1969 to 1976, bottleneck 3/8 – 5/16” rocker arm studs
were installed in the cylinder heads, resulting in a nonadjustable
configuration. Our 99768-16 positive locking
nuts will permit valve adjustment for these applications. In
1977, a net lash pedestal mount rocker arm system was
installed, continuing for the remainder of production
through 1997. These pedestal mount rocker cylinder heads
can be easily converted to an adjustable configuration for
hydraulic and hydraulic roller street applications by using
our Pushrod Guideplate Conversion Kits. Part number
36655-16 provides for 3/8” stud mounted adjustable rocker
arms, and 36656-16 is for 7/16” stud mounted rocker arms.
No machining is necessary, and your standard pushrods can
be maintained, thanks to the composite bushing inserts in
the pushrod guideplates. For mechanical and mechanical
roller applications, we advise the heads be machined for
screw-in rocker arm studs and pushrod guideplates.
1970-1982 351C-Boss 351-351M-400 cu.in. V8
The Ford 335 engine family (commonly called the
“Cleveland”) shared cylinder bore spacing dimensions, and
the head bolt pattern with the Windsor engines, but few
other parts are interchangeable. The inline lifter bores were
retained, but they are at a different bank angle from the
Windsor. Cam bearing sizes are also different, as are the distributor
gear dimensions. The valves in the cylinder heads
are canted (staggered), but the same length pushrods are
used for the intake and exhaust valves. The rocker arm ratio
is 1.73:1.
These engines are designated by Crane’s 52 prefix. We offer
hydraulic, retrofit hydraulic roller, mechanical, and mechanical
roller camshafts for them. A wide-ranging line of valve
train components is also available.
The pedestal mount rocker cylinder heads can be easily
converted to an adjustable configuration for hydraulic and
hydraulic roller street applications by using our Pushrod
Guideplate Conversion Kits. Part number 52655-16 provides
for adjustable configuration 7/16” stud mounted rocker
arms. No machining is necessary, and your standard
pushrods can be maintained, thanks to the composite
bushing inserts in the pushrod guideplates. For mechanical
and mechanical roller applications, we advise the heads be
machined for screw-in rocker arm studs and pushrod guideplates.
The 1971 Boss 351 and 1972 351C H.O. featured cylinder
heads with straight 7/16” rocker arm studs and pushrod
guideplates, required for the mechanical lifter camshafts
that were standard equipment.
The Fontana Clevor block also uses our 52 prefix camshafts,
not the 36 or 44 prefix Windsor style items.
There can be a possible misapplication of components
when choosing the proper retainers and valve stem locks
for these engines. Although the valve stems are all 11/32”
diameter, the configuration of the valve locks were
changed. Note the following explanation to insure that the
proper components are being used:
1970-1977 351C-351M-400 - Intake and exhaust valves
use multiple groove valve stem locks, having a large outside
diameter, requiring the use of 3/8” type valve spring retainers.
1971 Boss 351 / 1972 351C H.O. - Intake and exhaust
valves use standard single groove valve stem locks, requiring
the use of 11/32” valve spring retainers.
1978 351M-400 - The intake valves use multiple groove
valve stem locks, having a large outside diameter, requiring
the use of 3/8” type valve spring retainers. The exhaust
valves use standard single groove valve stem locks, requiring
the use of 11/32” valve spring retainers.
1979-1982 351M-400 - Intake and exhaust valves use
standard single groove valve stem locks, requiring the use
of 11/32” valve spring retainers.
866-388-5120 • 386-236-9983 FAX 195