Page 372 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

Horizontal Bar Mechanical Roller Lifters Billet Aluminum Roller Rocker Arms
HRC91119 CNC-machined aluminum roller rockers withstand over 800+ lbs. of valve spring
Lifters have alloy bar stock bodies, case-hardened pressure and over .800" valve lift. Rocker arms are purple anodized, with needle
8620 roller bearings and are spring-loaded for easy bearing fulcrums and roller tips, centerless ground
cam changes. Fits small block Chevy 265-400. Sold in sets of 16. trunnions and thick wall adjusting nuts. Sets of 16.
Part No. Application Stud Ratio
Vertical Bar Mechanical Roller Lifters HRC90070 SB Chevy 265-400 3/8" 1.50
HRC90072 SB Chevy 265-400 7/16" 1.50
Vertical bar lifters have 8620 heat-treated steel bodies and 9310 steel roller
bearings for exceptional strength and durability. Sold in sets of 16. Valve Locks
Part No. Application Howards Cams offers a variety of heat treated, forged
HRC91117 SB Chevy 265-400 steel valve locks, in 7° versions. All valve locks listed are
HRC91122 SB Chevy 265-400, +.300" Tall
HRC91127 BB Chevy 396-454 single groove design. Sold in sets of 16 pair.
HRC91128 BB Chevy 396-454, +.300" Tall Part No. Type Stem Size Lock Angle Lash Cap Recess Installed Height
HRC91217 SB Ford 221-351W
HRC93005 Forged 11/32" 7° No Std.
HRC93010 Forged 11/32" 7° No +.050"
Camshaft Degree Bushings
An easy method to advance or retard cam timing. Sold in packs of five. Ultimate Duty Valve Seals
Requires drilling a 13/32" hole in the cam gear. Premium PC type seals are unaffected by fuels or temperatures
Part No. Description up to 350°F. Sold in sets of 16.
HRC94505 Bushing Set, 0°, 2°, 4°, 6°, 8° I.D. I.D. Overall Inside Guide
HRC94510 Bushing Set, 0°, 1°, 3°, 5°, 7° Part No. Description Guide Valve O.D. Height Height Contact
HRC93311 11/32" x .500" Guide .494" .337" .630" .460" .340" .120"
Valve Spring Retainers
Howard Cams manufactures 7° and 10° chrome moly retainers, all packaged in sets of 16.
Part No. Description Lock Angle Valve Stem Valve Spring A B C D
HRC97112 Chrome Moly 7° 11/32" 1.250" Single 1.125" .850" .645" — D
HRC97118 Chrome Moly 7° 11/32" 1.437"-1.450" S/D 1.440" 1.050" .700" — C B
HRC97128 Chrome Moly 10° All 1.437"-1.450" S/D 1.435" 1.070" .700" —
A
Performance Valve Springs
Coiled and heat treated in the finest facilities available, Howard Cams offers a wide variety of valve springs. Sold in sets of 16.
Part No. O.D. I.D. Description Seat Pressure Open Pressure Rate Coil Bind Max Lift Retainer
Performance Street/Strip Valve Springs
HRC98212 1.265" .875" Single With Damp. 115 @ 1.750" 340 @ 1.250" 425 1.150" .550" HRC97112
HRC98213 1.265" .875" Single With Damp. 120 @ 1.800" 350 @ 1.200" 380 1.100" .640" HRC97112
HRC98214 1.250" .870" Single With Damp. 115 @ 1.700" 300 @ 1.250" 411 1.160" .500" —
HRC98214-K11* 1.250" .870" Single With Damp. 115 @ 1.700" 300 @ 1.250"` 411 1.160" .500" Included
HRC98411 1.437" .960" Single With Damp. 110 @ 1.750" 270 @ 1.100" 246 1.050" .640" —
HRC98529 1.525" 1.075" Single With Damp. 125 @ 1.875" 350 @ 1.375" 462 1.200" .600" —
HRC98636 1.530" .700" Dual With Damp. 130 @ 1.875" 330 @ 1.300" 348 1.150" .670" HRC97118
HRC98438-K12* 1.465" 1.091" Dual w/o Damp. 122 @ 1.650" 353 @ 1.100" 425 .950" .690" Included
Electro Polished Performance Valve Springs
HRC98215 1.265" .875" Single With Damp. 120 @ 1.800" 350 @ 1.200" 380 1.100" .640" —
*Matched valve spring kit with retainers and valve locks.
Track Smart 4340 Forged Steel Crankshafts
Computer designed, “Track Smart” 4340 forged crankshafts are constructed using precisely placed counterweights for
improved balance and reduced bearing loads. All rod journals are drilled and counterweights profiled for piston clearance. All journals include
large,.125" radii and require chamfered bearings. Crankshafts are additionally hardened with a deep nitride for increased wear resistance.
Part No. Description Main Stroke Rod Length Part No. Description Main Stroke Rod Length
HRCH353485712T SB Chevy, Int. Bal., 2-Pc. Rear Main 350 3.480" 5.700" HRCH403756012T SB Chevy, Int. Bal., 2-Pc. Rear Main 400 3.750" 6.000"
HRCH353756012T SB Chevy, Int. Bal., 2-Pc. Rear Main 350 3.750" 6.000" HRCH403876012T SB Chevy, Int. Bal., 2-Pc. Rear Main 400 3.875" 6.000"
HRCH353876012T SB Chevy, Int. Bal., 2-Pc. Rear Main 350 3.875" 6.000" HRCH404006012T SB Chevy, Int. Bal., 2-Pc. Rear Main 400 4.000" 6.000"
HRCH354006012T SB Chevy, Int. Bal., 2-Pc. Rear Main 350 4.000" 6.000"

Extreme Billet Main Caps
Precision CNC-machined from 1020 low-carbon steel, extreme billet main caps help increase bottom end rigidity. (3) center caps.
Part No. Description
HRCH350R SB Chevy 350, 4-Bolt Replacement
HRCH350S SB Chevy 350, Converts 2-Bolt To 4-Bolt, Splayed Outer Bolts

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