Hi-Tech Endurance Valve Springs The ultimate valve springs for oval track engines. Developed after hundreds of hours of dyno and track testing. Sold in sets of 16.
Seat Load
Open Load
Coil Bind
Rate Lbs./In.
Titanium Retainer
Steel Retainer
Cup Seat
Part No.
Description
I.D.
Shims
COM925-16 COM938-16 COM941-16 COM943-16
1.510" Dual Spring With Damper
.697" 111 @ 1.900" 388 @ 1.200" 1.175" 395 COM732/721 COM741 COM4700/4783/4771 COM4757 .730" 210 @ 1.900" 516 @ 1.250" 1.200" 480 COM738 COM741 COM4700/4778 COM4757
1.540" NASCAR
1.260" Single Spring With Damper
.871" 135 @ 1.750" 350 @ 1.250" 1.100" 443 COM728 COM750 .812" 240 @ 1.900" 598 @ 1.250" 1.160" 551 COM731/720 N/A .731" 150 @ 1.925" 410 @ 1.275" 1.225" 400 COM785 N/A
N/A
COM4753
1.550" Inter-Fit Pacaloy 1.585" Single Beehive
COM4785/4777 COM4757
COM26055-16 COM26089-16
COM4711
COM4757
1.550" Dual Spring, Roller Applications .812" 230 @ 2.000" 580 @ 1.300" 1.230" 500 COM731/720 N/A COM4777/4700/4785 COM4757 COM26094-16 1.550" Dual Spring With Damper, Flat Tappet .752" 174 @ 1.900" 452 @ 1.275" 1.200" 445 COM732/721 COM749 COM4772/4773/4700 COM4757 COM26099-16 1.640" Dual Spring, Roller Applications .759" 250 @ 2.050" 693 @ 1.250" 1.184" 561 COM733 N/A COM4774/4775/4702 COM4757 COM26115-16 1.549" Dual Spring, Roller Applications .719" 228 @ 2.050" 636 @ 1.300" 1.192" 544 COM732 COM748 COM4700/4781/4782 COM4757 COM26986-16* 1.412" Single Beehive .650" 123 @ 1.750" 284 @ 1.175" 1.060" 280 COM788 COM787 COM4696-16 COM4755 * Single beehive version of COM986 dual spring.
Dual Valve Spring Assemblies &RPS&DPVGXDOYDOYHVSULQJDVVHPEOLHVGHULYHPD[LPXPSHUIRUPDQFHIURPDJJUHVVLYHFDPVKDIWSUR¿OHVLQ high-RPM engines. Sold in sets of 16.
Seat Load
Open Load
Coil Bind
Rate Lbs./In.
Titanium Retainer
Steel Retainer
Cup Seat
Part No.
Description
I.D.
Shims
COM924-16 COM929-16 COM939-16 COM950-16 COM954-16 COM985-16 COM986-16 COM987-16 COM999-16
1.510" 2-Spring With Damper 1.540" 2-Spring Assembly
.700" 112 @ 1.900" 355 @ 1.200" 1.200" 347 COM732/721 COM741 .755" 150 @ 1.880" 415 @ 1.280" 1.180" 442 COM732/721 COM741 .720" 133 @ 1.900" 332 @ 1.300" 1.200" 333 COM730 COM740/743 .761" 210 @ 1.900" 523 @ 1.250" 1.178" 483 COM732/721 COM741 .700" 138 @ 1.950" 419 @ 1.350" 1.225" 462 COM732/721 COM741 COM4700/4770/4771/4783 COM4757 COM4781/4782 COM4755 COM4700/4781/4782 COM4757 COM4700/COM4770 COM4757 COM4700/4772/4773 COM4757
1.540" NASCAR
1.470" 2-Spring Assembly 1.525" 2-Spring Assembly
1.430" 2-Spring 1.430" 2-Spring 1.430" 2-Spring
.700" 165 @ 1.750" 346 @ 1.250" 1.150" 366 COM730 .697" 132 @ 1.750" 293 @ 1.250" 1.150" 322 COM730 .697" 121 @ 1.800" 343 @ 1.200" 1.150" 370 COM730
COM740 COM740 COM740
N/A N/A N/A
COM4754 COM4754 COM4754
1.550" H-11 Spring Assembly .724" 196 @ 1.900" 671 @ 1.150" 1.090" 633 COM732/721
N/A
COM4700/4781/4782 COM4757
Steel Retainers Comp Cams steel retainers can handle the higher pressures developed by large diameter valve springs. 5HWDLQHUVDUHPDFKLQHGIURPFKURPHPRO\¿QLVKHGLQEODFNR[LGHDQGGHVLJQHGIRUSRVLWLYHORFD - tion when combined with Comp Cams high-quality valve springs. For superior strength and stability, Comp Cams also offers 10-degree retainers and 10-degree valve locks. Sold in sets of 16.
Dimensions
Lock Angle
Valve Stem Size
Valve Spring Diameter
Part No.
Description
A
B
C
COM740-16 Super Lock Retainer COM741-16 Super Lock Retainer
10° 10°
All All
1.437"-1.500" .690" 1.060" 1.400" 1.500"-1.550" .690" 1.115" 1.500"
COM742-16 COM743-16
Chevy 283-400 Chevy, SB Ford
7° 7°
11/32"
1.250"
.650" .870" 1.230"
11/32" 1.437"-1.500" .690" 1.060" 1.400"
COM747-16 Super Lock Retainer COM748-16 Super Lock Retainer COM749-16 Super Lock Retainer COM750-16 Super Lock Retainer
10° 10° 10° 10°
All All All All
1.437"-1.500" .690" 1.050" 1.400" 1.500"-1.550" .710" 1.095" 1.500" 1.500"-1.550" .745" 1.125" 1.500"
1.250"
.735" .870" 1.240"
COM768-16
Ford Applications
7°
11/32" 1.437-1.500" .690" 1.030" 1.400"
Lightweight Tool Steel Retainers Cost-effective retainers are approximately 1/3 the weight of chrome moly steel retainers and only 2-4 grams heavier than titanium XQLWV)($DQG&$'GHVLJQHGIRUWKHSHUIHFWEDODQFHRIVWUHQJWKDQGZHLJKWUHWDLQHUVDUH&1&PDFKLQHGIURPH[FHSWLRQDOO\GHQVH tool steel. Offered for 7° and 10° valve locks. Sold in sets of 16.
Dimensions
Lock Angle
Valve Stem Size
Part No.
Description
Valve Spring Diameter
A
B
C
COM1730-16 LW Retainers COM1731-16 LW Retainers COM1732-16 LW Retainers COM1750-16 LW Retainers COM1754-16 LW Retainers COM1756-16 LW Retainers COM1772-16 LW Retainers COM1779-16 LW Retainers COM1787-16 LW Retainers
10° 10° 10° 10°
All All All All
1.437"-1.500" 1.437" 1.065" .700" 1.500"-1.550" 1.437" 1.100" .800" 1.500"-1.550" 1.500" 1.110" .710"
1.250" 1.250"
1.240" .870" .735" 1.235" .860" .610"
7°
Stock
10°
All
1.055"-1.290" 1.050" .725" 1.055"-1.290" 1.030" .640"
N/A N/A
7° 7° 7°
Stock Stock
1.290" 1.055"
1.172" .910" .646"
11/32"
1.030" .640"
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274 2019-20 CIRCLE TRACK PARTS AND ACCESSORIES
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