Page 767 - 2021-22 Auto Performance_Circle Track
P. 767
SB Chevy Ultra 18° 250 Race Cylinder Head
TRFTFS-3181T001-C01
Engineered for high-RPM racing engines, ultra 18° 250
race cylinder heads
provide more horsepower out-of-the box than fully
prepped OEM-style 23°
heads. Aluminum head
combustion chambers and competition ported runners for max- and related components. Requires offset shaft-mounted rocker arms and mechanical roller camshaft with offset intake lifters.
SB Ford Twisted Wedge Street/Strip Cylinder Heads NEW!
An improved combustion
chamber design rotates the
valves over the center of the cylinder bores for optimum valve angles, locations, and chamber shape. Aluminum heads include - ly assembled with stainless valves and high-performance dual valve springs.
Part No.
Intake Runner
Comb. Chamber
Valve Spring
Int. Exh. Valve Valve
TRFTFS-52515601-C01
190cc
56cc
1.295"
2.055"
1.600"
TRFTFS-52516601-C01
190cc
66cc
1.295"
2.055"
1.600"
Intake Runner
Intake Valve
Exhaust Valve
Valve Spring
Combustion Chamber Volume
SB Chevy Gen. III GenX Street/Strip Cylinder Heads NEW!
Increase the performance
250cc
2.150"
1.600"
1.560"
56cc
Small Block Chevy Valve Cover Adapters
TRFTFS-31500811
adapters allow using
popular, early-style
small block Chevy
valve covers on late cen-
terbolt-style cylinder heads.
Increased height also allows using
stud girdles for increased valvetrain stability.
core gaskets.
SB Ford Twisted Wedge Cylinder Heads
chamber design rotates valves over the center of the cyl- inder bores for optimum
valve angles, locations,
and chamber shape. Alu-
with 2.020" intake and
1.600" exhaust valves,
intake valves that do not
heads have a 15° to 13.5°
reduction in valve angle to
reduce valve shrouding and
Heads are CNC-ported and
include 1.300" dual valve springs and titanium retainers. Avail-
Intake Comb. Valve Part No. Description Runner Chamber Spring
Cylinder Head Accessories NEW!
Int. Exh. Valve Valve
TRFTFS-3061T001
LS1 Cyl. Heads
220cc
64cc
1.300"
2.040"
1.575"
TRFTFS-3061T001-C02
LS2 Cyl. Heads
225cc
65cc
1.300"
2.055"
1.575"
Part No.
Description
TRFTFS-306SB600
GM LS Steam Line Plumbing Kit
TRFTFS-30600611
GM LS Steam Line Fittings Only
TRFTFS-51400419
SB Ford Head Bolt Reducer Bushings, 1/2" to 7/16", 20 Pcs.
TRFTFS-51400520
SB Ford 289-351W Roller Rocker Arms, 1.6 Ratio, 7/16" Stud, 16 Pcs.
TRFTFS-51400614
Rocker Arm Studs, 7/16"-20 x 1.900" Long, Ford/Chevy, 16 Pcs.
TRFTFS-51400904
SB Ford 289-351 Premium Head Set, for Twisted Wedge Heads
TRFTFS-52400622
SB Ford 302-351W Pushrod Guideplates, 5/16" Pushrods, Set of Four
Part No.
* Emissions legal.
Spring Valve
Valve
Intake Runner
Comb. Chamber
Valve Int. Exh.
TRFTFS-51410004-M58*
170cc
58cc
1.460" Dual
2.020"
1.600"
TRFTFS-51410010-M61
170cc
61cc
1.460" Dual
2.020"
1.600"
SB Ford Cast Aluminum Valve Covers
TRFTFS-51411801
Cast from A319 aluminum for rigidity and pre-
vention of oil leaks.
Valve covers are 3"
and black powder
coated with a raised
-
ties logo. Fits all 289-
SB Ford Track Max Harmonic Balancer
NEW! TRFTFS-19006
Rigid carbon steel elastomer-style harmonic balanc-
for small block Ford 289-351W (except 5.0L), external- ly balanced 28-oz. applications.
Camshaft Degree Kit NEW! TRFTFS-90000-16 All inclusive kit allows degreeing cam-
shafts quickly and precisely. Includes 11" dia. aluminum degree wheel, 0-1" travel
dial indicator and stand with magnetic
base, low-tension checking springs, wire pointer, TDC stop, and adapter bushings, all packed in a neat carrying case. Kit may also be used to check piston-to-valve clearance, crankshaft end play, ring gear backlash, etc.
CIRCLE 2021-22 765 TRACK
