Page 206 - 2022-23 Auto Performance Open Wheel Catalog

Racing Valve Springs
Engineered for racing use, springs are precisely coiled and heat-treated. Sold in sets of 16.
Part No. Description
Performance Valve Springs
O.D. I.D.
1.265" .875" 1.265" .878" 1.250" .870"
1.265" .878" 1.265" .875"
Seat Pressure
115@1.780" 120@1.800" 115@1.700"
120@1.800" 120@1.800"
Open Pressure Rate
340@1.250" 425 375@1.250" 464 300@1.250" 411
375@1.250" 460 350@1.200" 430
Coil Bind
1.150" 1.100" 1.160"
1.100" 1.100"
7° Retainer
HRC97112 HRC97112 HRC97112
10° Retainer
HRC97132 HRC97132 HRC97132
HRC98212 HRC98213 HRC98214
Single with Damper Single with Damper Single with Damper
Max Effort Valve Springs
HRC98215 Single with Damper
Racesaver Valve Springs
HRC98213RS Single with Damper
Valve Spring Retainers
HRC97112 ——
HRC97132
Howard Cams manufactures 7° and 10° chrome moly and 10° titanium retainers, all packaged in sets of 16.
Lock Valve Angle Stem
HRC97118
HRC97128
HRC97220 Titanium 10° All 1.550"-1.550" S/D 1.500" 1.105" .710" —
Dimensions
Part No.
Description
Valve Spring
A
B
C D
Chrome Moly Chrome Moly
7° 11/32" 10° All
1.437"-1.450" S/D 1.437"-1.450" S/D
1.440" 1.435"
1.050" 1.070"
.700" — .700" —
Small Block Chevy Roller Lifters Set
HRC91152
Designed for the entry-level sportsman racer. Built with high-grade materials, but priced with a budget racer in mind, these lifters start with 8620 heat-treated steel bodies. Black oxide- treated for protection, these lifters are fitted with 9310 steel rollers and superior high-strength bearings. They are hand-assembled, checked, and packaged in the USA! Sold in sets of 16.
Pro Lite Direct Lube Mechanical Roller Lifters
Pro Lite lifters are exceptionally lightweight, up to 20 grams lighter than many competitors' lightweight lifters. Lifters are assembled using durable 8620 steel bodies, 9310 steel rollers, precision sorted needle bearings, and stainless steel cross bars. Integrated high-pressure pin oilers offer improved durability. Sold in sets of 16.
Valve Locks
Howards Cams offers a variety of heat-treated, machined, and forged steel valve locks, in 7° or 10° versions. All valve locks listed are single-groove design. Sold in sets of 16 pairs.
Part No.
HRC93005 HRC93010 HRC93040 HRC93075 HRC93080
Rev Kits
HRC90135
Type
Stem Size
Lock Angle
7° 7° 7° 10° 10°
Lash Cap Recess
No No No Yes Yes
Installed Height
Standard +.050" Standard Standard Standard
Forged 11/32"
Forged 11/32" Heat Treated 11/32" Machined 11/32"
Machined
3/8"
Part No.
HRC91132 HRC91137
Description
SB Chevy 265-400, +.300" Tall SB Chevy 265-400
Engineered for roller
cam engines, Howards rev kits
increase valve train stability throughout
the RPM range and keep the lifters in their bores
if valve train components fail. Locator bars, springs,
and lifter buttons are included. Fits small block Chevy with cutaway style lifters and 5/16" pushrods only.
Billet Aluminum Roller Rocker Arms
Description
SB Chevy 265-400,
Cutaway-Style Lifter Applications, 5/16" Pushrods Only
CNC-machined aluminum roller rockers will withstand over 800+ pounds of valve spring pressure and over .800" valve lift. Rocker arms are purple anodized, with needle-bearing fulcrums and roller tips, centerless ground trunnions, and thick-walled adjusting nuts. Sets of 16.
Ultimate-Duty Valve Seals
HRC93311
Premium PC valve seals are manufactured from space-age fluoropolymer and are toler- ant to pump gas, alcohol, or nitromethane. Self-lubricating seals provide controlled radial tension, while allowing a very small amount of oil for valve guide and stem lubrication. Sold in sets of 16.
Part No.
HRC90070 HRC90072 HRC90073
Application
SB Chevy 265-400 SB Chevy 265-400 SB Chevy 265-400
Stud Ratio
3/8" 1.50 7/16" 1.50 7/16" 1.60
Description
11/32" x .500" Guide
Guide I.D.
.494"
Valve
I.D. O.D.
.337" .630"
Overall Height
.460"
Guide Contact
.120"
204
2022-23 PARTS AND ACCESSORIES