Page 378 - 2018 Racecar Engineering Drag Racing Parts and Accessories Catalog

Drag Race 4- And 5-Speed Transmission Replacement Components
A variety of replacement components are available for Jerico 4- and 5-speed drag race transmissions.
Part No. Description
JER34743-DS Rear Seal
JERBCH90 Front Bearing Retainer, 4-Speed Only
JERN6130 Shift Finger Seal
JERN11123 Front Seal, All Exc. BB Ford 10-Spline
JER0M1037 Dog Ring, 37-Spline, Early 4-Speed
JER120 O-Ring For Countershaft, Late Top Loader Style 4- And 5-Speed
JER6308-NM Front Bearing, All 4-Speed
JERSDP-A Detent Pin, All 4- And 5-Speed

Forged Billet H-Beam Connecting Rods
Forged series 4340 steel connecting rods are core hardened to increase tensile strength and mag-particle inspected. Rods are fitted
with ARP fasteners and finish honed. Center-to-center dimensions are held within +/-.001" and journals are honed to +/-.0001". All
rods listed are bushed for full floating wrist pins. Sold in sets of eight unless specified.
Part No. Description Housing Bore Wrist Pin Dia. Big End Width Pin End Width Fastener Size/Type Gram Weight
K1T007AV25624 Chrysler Hemi 6.243" 2.250" .927" .934" 1.000" 7/16" 622
K1T012AD25600 SB Chevy 6.000" 2.225" .927" .940" 1.010" 7/16" 635
K1T012AG33639 BB Chevy 6.385" 2.325" .990" .992" 1.062" 7/16" 740
K1T012AG33680 BB Chevy 6.800" 2.325" .990" .992" 1.062" 7/16" 785
K1T012BC21146* Chevy Ecotec 145.5mm 52.125mm 23mm 23.98mm 23.98mm 3/8" 550
* Set of four.

Forged Steel Crankshafts
Crankshafts are made from 4340 steel and undergo core hardening for added durability and
mag-particle inspection for superior quality control.
Part No. Description Stroke Main Dia. Rod Dia. Min. Rod Length Flange Weight
K1T011DAI340 SB Ford 302 3.400" 2.250" 2.100" 5.400" 6-Bolt 47 lbs.
K1T011EAD400 SB Ford 351C 4.000" 2.750" 2.100" 6.200" 6-Bolt 61 lbs.
K1T012DAD348 SB Chevy 3.480" 2.450" 2.100" 5.700" 6-Bolt 53 lbs.
K1T012DAD375 SB Chevy 3.750" 2.450" 2.100" 5.700" 6-Bolt 55 lbs.
K1T012GAG425 BB Chevy 4.250" 2.750" 2.200" 6.385" 6-Bolt 81 lbs.

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.
Part No. Type Diameter Installed Height Open Height Coil Bind Notes
KMOK-700 Single Silicon 1.265" 115 Lbs. @ 1.700" 350 lbs. @ 1.150" 1.050" Cams Up To .590" Lift
KMOK-750 Single H-11 1.265" 130 Lbs. @ 1.700" 380 lbs. @ 1.150" 1.030" Cams Up To .610" Lift
KMOK-800 Double Silicon 1.460" 155 Lbs. @ 1.850" 450 lbs. @ 1.150" 1.085" Cams Up To .700" Lift
KMOK-850 Double Silicon 1.550" 130 Lbs. @ 1.900" 380 lbs. @ 1.225" 1.160" Cams Up To .630" Lift
KMOK-900 Double H-11 With Damper 1.550" 225 Lbs. @ 1.850" 625 lbs. @ 1.150" 1.090" Cams Up To .700" Lift
KMOK-950 Double H-11 With Damper 1.550" 230 Lbs. @ 2.000" 680 lbs. @ 1.300" 1.150" Cams Up To .750" Lift
KMOK-1000 Double H-11 With Damper 1.625" 225 Lbs. @ 1.900" 740 lbs. @ 1.150" 1.090" Cams Up To .750" Lift
KMOK-1000H Double H-11 With Damper 1.625" 240 Lbs. @ 2.000" 850 lbs. @ 1.150" 1.090" Cams Up To .850" Lift
KMOK-1100 Double Silicon w/Damper 1.550" 200 Lbs. @ 1.900" 500 lbs. @ 1.260" 1.150" Cams Up To .640" Lift
KMOK-1150 Double w/Damper 1.550” 230 Lbs. @ 2.000” 628 Lbs. @ 1.250” 1.150” Cams Up To .700” Lift
KMOK-1500 Triple H-11 1.650" 260 Lbs. @ 2.000" 940 lbs. @ 1.150" 1.090" Cams Up To .850" Lift
KMOK-1600 Double Silicon w/Damper 1.550" 180 Lbs. @ 1.950" 520 lbs. @ 1.320" 1.170" Cams Up To .720" Lift
Valve Locks Titanium Retainers
K-Motion Valve Locks are fully machined and heat treat ed. They K-Motion Retainers are man u fac tured
feature the more desirable 10° angle that helps eliminate the from high strength ti ta ni um and of fer
“pull thru” problem com mon with standard 7° locks. Sold in sets an additional .050" in stalled height over
of 16 pair. standard retainers. Used with 10° locks. Sold in sets of 16.
Part No. Valve Stem Height Part No. Application
KMOK-6110 † 11/32" Standard KMOK-7320 K-850, K-900, K-950, K-1100 Or K-1600 KMO Valve Springs
KMOK-6120 † 3/8" Standard KMOK-7330 K-1000 Or K-1000H K-Motion Valve Springs
KMOK-6130 11/32" Standard
KMOK-6140 11/32" +.050"
† Recess for lash caps
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