Page 464 - 2019-2020 Racecar Engineering Circle Track Parts and Accessories Catalog

Valve Springs
K-Motion valve springs are coiled from the very best silicon or H-11 tool steel available for su pe ri or de pend-
abil i ty. Sold in sets of 16. To order a single spring, add -1 to the end of the part number.
Installed Open Coil
Part No. Type Diameter Height Height Bind Notes
KMOK-700 Single Silicon 1.265" 120 lbs. @ 1.700" 375 lbs. @ 1.150" 1.050" Up To .500" Lift
KMOK-750 Single H-11 1.265" 130 lbs. @ 1.700" 395 lbs. @ 1.150" 1.050" Up To .610" Lift
KMOK-800 Double Silicon 1.460" 165 lbs. @ 1.850" 495 lbs. @ 1.150" 1.085" Up To .700" Lift
KMOK-850 Double Silicon 1.550" 135 lbs. @ 1.900" 430 lbs. @ 1.225" 1.160" Up To .630" Lift
KMOK-900 Double H-11 Without Damper 1.550" 240 lbs. @ 1.850" 645 lbs. @ 1.150" 1.090" Up To .700" Lift
KMOK-950 Double H-11 With Damper 1.550" 245 lbs. @ 2.000" 690 lbs. @ 1.300" 1.150" Up To .750" Lift
KMOK-1000 Double H-11 With Damper 1.625" 240 lbs. @ 1.900" 740 lbs. @ 1.200" 1.090" Up To .750" Lift
KMOK-1000H Double H-11 With Damper 1.625" 265 lbs. @ 2.000" 825 lbs. @ 1.200" 1.090" Up To .850" Lift

Steel Retainers KMOK-7410
GM LS Valve Spring Kits Offered in 10° version, steel retainers are ma-
Engineered exclusively for GM LS chined from premium quality steel, heat-treated
applications, drop-in valve spring kits are DQG LQFOXGH D EODFN R[LGH ¿QLVK 6ROG LQ VHWV RI
suited to engines with up to .660" valve 16.
lift. Premium, M300 1.300" diameter Valve Spring Dimensions
double valve springs offer 155 lbs. of seat Part No. Type Application A B C D
pressure at 1.780" installed height, 380 K-850, K-900,
lbs. of open spring pressure at 1.180" and KMOK-7410 10° K950, K-1100, 1.400" 1.060" .700" —
coil bind at 1.070". Kits are sold complete Retainers K-1150, K-1600,
K-1650
with choice of steel or lightweight titanium
retainers, valve locks, spring locators and valve seals. Valve
springs may also be purchased separately. Titanium Retainers KMOK-7320
Part No. Description
KMOK-775S GM LS Valve Spring Kit, Steel Retainers
KMOK-775T GM LS Valve Spring Kit, Titanium Retainers
KMOK-775 GM LS Valve Springs Only
Valve Locks KMOK-6110
K-Motion Valve Locks are fully machined K-Motion Retainers are man u fac tured
DQG KHDW WUHDWHG /RFNV ¿W DOO YDOYHV from high-strength ti ta ni um and of fer
and feature the more desirable 10° angle an additional .050" in stalled height over
that helps eliminate the “pull through" standard retainers. Used with 10° locks.
problem common to standard 7° locks. Locks include a recess Sold in sets of 16.
for lash caps and are sold in sets of 16 pair (32 pieces). Dimensions
Part No. Valve Spring Application A B C D
K-850, K-900, K-950,
KMOK-7320 K-1100, K-1600 1.500" 1.110" .710" —

SB Chevy Forged Steel Crankshaft SB Chevy Forged Billet H-Beam
K1T012DAD348 Connecting Rods K1T012AD25600
Crankshaft is constructed from 4340 steel and has under- Forged, 4340 steel connecting rods are core hard-
gone core hardening for added durability and mag-particle ened to increase tensile strength and mag-particle
inspection for superior quality control. LQVSHFWHG 5RGV DUH ¿WWHG ZLWK $53 IDVWHQHUV
DQG ¿QLVK KRQHG &HQWHU WR FHQWHU GLPHQVLRQV
are held within +/-.001" and journals are honed to
5RGV DUH EXVKHG IRU IXOO ÀRDWLQJ ZULVW SLQV
Sold in sets of eight.
Housing Big End Pin End Gram
Part No. Description Bore Pin Width Width Weight
K1T012AD25600 SB Chevy 2.225" .927" .940" 1.010" 635
Main Rod
Part No. Description Stroke Journal Journal Flange Weight
K1T012DAD348 SB Chevy 3.480" 2.450" 2.100" 6-Bolt 53 lbs.
460 2019-20 CIRCLE TRACK PARTS AND ACCESSORIES