2011 - Crane Cams

CAMSHAFTS
Ford-Mercury V-8 68-97
260
Application
Mechanical Roller Camshafts
Competition only, good upper RPM torque and HP, bracket
racing, auto trans w/race converter, 12.5 minimum
compression ratio advised.
Competition only, good upper RPM torque and HP, bracket
racing, good w/540+ cu.in w/aluminum cylinder
heads, good with large manifold nitrous system, auto
trans w/race converter, 12.5 minimum compression ratio
advised. Good with large Roots supercharger, 24 lbs.
maximum boost w/8.0 maximum compression ratio
advised.
Competition only, good upper RPM torque and HP, bracket
racing, 510+ cu.in., auto trans w/race converter, 12.5
minimum compression ratio advised.
Competition only, good upper RPM HP, bracket racing,
good w/540+ cu.in w/aluminum cylinder heads, good
with large manifold nitrous system, auto trans w/race
converter, 13.0 minimum compression ratio advised.
SFO1 firing order.
Radical competition only, NMRA, Top Sportsman, large
manifold nitrous system, good with 540+ cu.in., auto
trans w/race converter, 14.0 minimum compression ratio
advised. SFO1 firing order.
Radical competition only, Unlimited Street, Quick 16, Top
Sportsman, large manifold nitrous system, very large
cu.in., auto trans w/race converter, 14.5 minimum compression
ratio advised. SFO1 firing order.
Camshaft Series/
Grind Number
RPM range shown is for average usage. These cam profiles
will RPM higher, depending upon application.
IMPORTANT: Adjustable Vacuum Advance Kit available. See page
333 for details.
IMPORTANT: Crane offers Pushrod Guideplate and Rocker Arm
Stud Conversion Kits, (35655-16 and 52655-16) for street
applications, enabling the 370-429-460 cu.in. engines with
pedestal mounted rockers to have adjustable rocker arms
without cylinder head removal or machining. See page 325
for details.
RPM
POWER
RANGE
R-272/420-2S1-10 4200-
8000
R-272/436-2S-14 4200-
8200
R-276/420-2-10 4400-
8200
R-276/4334-2S-12 SFO1 4600-
8400
R-280/5152-2S-14 SFO1 5000-
8800
R-288/5152-2S-16 SFO1 5400-
9200
Camshaft
PART NUMBER/
Emissions Code
See pg. 296
LIFTERS
CRANECAMS.COM
370-429-460 (7.5L) cu.in.
COMPLETE CAM SPECIFICATIONS
Degrees
Duration
@ .050”
Int/Exh.
Advertised
Degrees
Duration
Int/Exh.
Degrees
Lobe
Separation
Open/Close
@ .050”
Cam Lift
Int/Exh
Lash
Hot
Int.
Exh.
Gross
Lift
Int.
Exh.
358831 *a 30518-16 272 304 110 30 62 .020 .718
35570-16 b 280 312 74 26 .020 .718
3
358221 *a 30518-16 272 302 114 27 65 .020 .746
35570-16b 280 312 79 21 .022 .732
NOTE: Roller camshafts with SFO1 firing order (1-5-4-8-6-3-7-2)
are available on special order. Contact Crane’s Performance
Consultants for details.
NOTE: When installing roller lifter series cams and kits, in other
than 429 Super C.J. engines, a method of effecting valve
adjustment is required. On 68-71 engines equipped with
bottleneck type studs, using 99768-16 positive locking
nuts will permit valve adjustment. On 72-97 engines, the
heads must be machined to use 99159-16 screw-in studs
and pushrod guideplates.
3
358841 *a 30518-16 276 308 110 32 64 .020 .718
35570-16 b 286 318 77 29 .020 .718
3
358231 *a 30518-16 276 316 112 29 67 .026 .741
35570-16b 286 326 78 28 .026 .730
3
358241 *a 35570-16 b 280 310 114 31 69 .020 .881
296 336 87 29 .030 .805
3
358251 *a 35570-16b 288 318 116 33 75 .020 .881
310 346 96 34 .030 .838
3
NOTE: Many 1972-97 Ford-Mercury V-8 engines are originally
equipped with a retarded crankshaft sprocket. This may
cause idling and performance problems when installing
aftermarket camshafts. We recommend using our 35975-1
timing chain and gear assembly, a pre-1972 crankshaft
sprocket, or by degreeing in your camshaft. The nonretarded
sprocket will have the alignment dot and keyway
slot directly in line with each other.
NOTE: These camshafts also fit the 1969-70 Ford 429 Boss Hemi
V-8 engines. Some kit components will differ. Contact
Crane’s Performance Consultants for details.