Page 361 - 2018 Racecar Engineering Drag Racing Parts and Accessories Catalog

Billet Aluminum Valve Locks
Roller Rocker Arms Howards Cams offers a variety of heat
CNC-machined aluminum roller treated, forged steel valve locks, in 7° ver-
rockers will withstand over 800+ lbs. sions. All valve locks listed are single groove
of valve spring pressure and over design. Sold in sets of 16 pair.
.800" valve lift. Rocker arms are purple Stem Lock Lash Cap Installed
Size
Type
Part No.
anodized, with needle bearing fulcrums and roller tips, centerless HRC93005 Forged 11/32" Angle Recess Height
No
7°
Std.
ground trunnions and thick wall adjusting nuts. Sets of 16.
HRC93010 Forged 11/32" 7° No +.050"
Part No. Application Stud Ratio
HRC90070 SB Chevy 265-400 3/8" 1.50 Ultimate Duty
HRC90072 SB Chevy 265-400 7/16" 1.50
Valve Seals
Camshaft Degree Bushings Premium PC type seals are unaf-
An easy method to advance or retard fected by fuels or temperatures up
cam timing. Sold in packs of fi ve. Requires to 350°F. Sold in sets of 16.
drilling a 13/32" hole in the cam gear. I.D. I.D. Overall Inside Guide
Part No. Description Guide Valve O.D. Height Height Contact
Part No. Description HRC93311 11/32" x .500" Guide .494" .337" .630" .460" .340" .120"
HRC94505 Bushing Set, 0°, 2°, 4°, 6°, 8° HRC93316 11/32" x .531" Guide .524" .337" .630" .460" .340" .120"
HRC94510 Bushing Set, 0°, 1°, 3°, 5°, 7°
Valve Spring Retainers
Howard Cams manufactures 7° and 10° chrome moly retainers, all packaged in sets of 16.
Lock Valve Valve Dimensions
Part No. Description Angle Stem Spring A B C D D
HRC97112 Chrome Moly 7° 11/32" 1.250" Single 1.125" .850" .645" — C
HRC97118 Chrome Moly 7° 11/32" 1.437"-1.450" S/D 1.440" 1.050" .700" — 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 fi nest 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" —
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
Electro Polished Performance Valve Springs
HRC98215 1.265" .875" Single With Damp. 120 @ 1.800" 350 @ 1.200" 380 1.100" .640" —
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 profi led for piston clearance. All journals include a
large, .125” radii and require chamfered bearings. Crankshafts are additionally hardened with a deep nitride for increased wear resis-
tance.
Rod
Part No. Description Main Stroke Length
HRCH353485712T SB Chevy, Int. Bal., 2-Pc. Rear Main 350 3.480” 5.700”
HRCH353756012T SB Chevy, Int. Bal., 2-Pc. Rear Main 350 3.750” 6.000”
HRCH353876012T SB Chevy, Int. Bal., 2-Pc. Rear Main 350 3.875” 6.000”
HRCH354006012T SB Chevy, Int. Bal., 2-Pc. Rear Main 350 4.000” 6.000”
HRCH403756012T SB Chevy, Int. Bal., 2-Pc. Rear Main 400 3.750” 6.000”
HRCH403876012T SB Chevy, Int. Bal., 2-Pc. Rear Main 400 3.875” 6.000”
HRCH404006012T SB Chevy, Int. Bal., 2-Pc. Rear Main 400 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. Main cap sets include (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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