Page 212 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

High-Performance Valve Springs

Dual Valve Springs
Load @ Checking Height Load @ Open Height Coil Bind Matched Retainers Lock
Part No. Description OD In. ID In. Lbs. In. Lbs. In. Ht. In. Steel Titanium Angle
COM914-16 2 Spring Assy. 1.489" .819" 165 1.800" 385 1.200" 1.110" COM741 COM731 10°
COM917-16 2 Spring Assy. 1.550" .824" 200 1.800" 596 1.100" 1.050" COM741 COM731 10°
COM919-16 2 Spring Assy. 1.540" .814" 194 1.950" 579 1.250" 1.100" COM741 COM731 10°
COM924-16 2 Spring (920, 974) w/Damper 1.509" .697" 115 1.900" 322 1.200" 1.175" COM741 COM732 10°
COM928-16 2 Spring Assy. 1.550" .795" 149 1.880" 371 1.250" 1.160" COM741 COM732 10°
COM929-16 2 Spring Assy. 1.535" .755" 150 1.880" 434 1.230" 1.180" COM741 COM732 10°
COM930-16 2 Spring Assy. 1.509" .795" 142 1.900" 371 1.250" 1.160" COM741 COM732 10°
COM933-16 2 Spring Assy. 1.550" .750" 176 1.950" 494 1.300" 1.200" COM741 COM732 10°
COM935-16 2 Spring Assy. 1.554" .746" 194 1.950" 524 1.250" 1.180" COM748 — 10°
COM938-16 2 Spring Assy. (936, 937) 1.540" .731" 203 1.900" 467 1.250" 1.225" COM741 COM738 10°
COM939-16 2 Spring Assy. (936, 975) 1.540" .697" 137 1.950" 467 1.250" 1.225" COM741 COM732 10°
COM943-16 2 Spring Assy. Inter-Fit Hi-Tech 1.550" .812" 240 1.900" 598 1.250" 1.160" N/A COM731 10°
COM950-16 2 Spring Assy. 1.464" .724" 132 1.900" 331 1.300" 1.200" COM740 COM730 10°
COM953-16 2 Spring Assy. 1.535" .755" 162 1.900" 484 1.250" 1.085" COM741 COM732 10°
COM954-16 2 Spring Assy. 1.535" .731" 223 1.900" 537 1.250" 1.170" COM741 COM732 10°
COM955-16 2 Spring Assy. Inter-Fit Hi-Tech 1.550" .812" 240 2.000" 582 1.300" 1.230" N/A COM720, COM731 10°
COM959-16 2 Spring Assy. Inter-Fit Pacaloy 1.645" .865" 236 2.000" 671 1.250" 1.145" N/A COM739 10°
COM977-16 2 Spring Assy. (972,973) 1.460" .700" 155 1.850" 419 1.250" 1.195" COM740 COM730 10°
COM978-16 2 Spring Assy. (972,974) 1.460" .697" 126 1.850" 368 1.250" 1.195" COM740 COM730 10°
COM985-16 2 Spring Assy. (984,973) 1.430" .700" 164 1.750" 331 1.250" 1.150" COM740 COM730 10°
COM986-16 2 Spring Assy. (984,974) 1.430" .697" 132 1.750" 280 1.250" 1.150" COM740 COM730 10°
COM987-16 2 Spring Assy. (984,975) 1.430" .697" 121 1.800" 388 1.200" 1.150" COM740 COM730 10°
COM988-16 2 Spring Assy. 1.384" .804" 125 1.600" 240 1.100" 1.000" COM740 COM730 10°
COM991-16 2 Spring Assy. 1.650" .820" 222 1.950" 670 1.250" 1.125" N/A COM733 10°
COM994-16 2 Spring Assy. 1.437" .697" 100 1.700" 300 1.150" 1.020" COM740 COM730 10°
COM995-16 2 Spring Assy. (990,975) 1.437" .697" 115 1.700" 340 1.150" 1.050" COM740 COM730 10°
COM996-16 2 Spring Assy. H-11 1.625" .769" 223 2.000" 759 1.150" 1.090" N/A COM733 10°
COM998-16 2 Spring Assy. H-11 1.625" .769" 228 1.900" 702 1.200" 1.090" N/A COM733 10°
COM999-16 2 Spring Assy. H-11 1.550" .724" 196 1.900" 671 1.150" 1.090" N/A COM732 10°
COM26926-16 Ultra Dual 1.320" .654" 159 1.835" 448 1.160" 1.066" COM1779-16 — 7°
COM26527-16 2-Spring, LS7/LT1/LT4 1.301" .646" 159 1.900" 458 1.200" 1.150" COM1779 COM779 7°
COM26547-16 2-Spring 1.550" .784" 285 2.150" 810 1.250" 1.190" COM1732 COM732 10°

Hi-Tech Drag Race Valve Springs
Load @ Checking Height Load @ Open Height Coil Bind Matched Retainers Lock
Part No. Description OD In. ID In. Lbs. In. Lbs. In. Ht. In. Steel Titanium Angle
COM944-16 A 2 Spring Assy. Hi-Tech 1.570" .796" 190 1.950" 755 1.200" 1.100" — COM731 10°
COM946-16 A 3 Spring Assy. Hi-Tech 1.645" .635" 353 1.900" 800 1.250" 1.130" — COM739 10°
COM947-16 A 3 Spring Assy. Hi-Tech 1.645" .635" 304 2.000" 848 1.250" 1.130" — COM739 B 10°
COM948-16 A 3 Spring Assy. Hi-Tech 1.645" .635" 332 2.100" 949 1.200" 1.130" — COM739 10°
COM951-16 2 Spring Assy. Hi-Tech 1.620" .846" 230 1.950" 710 1.200" 1.100" — COM736 10°
Notes: All valve springs are available as singles or in sets of 8, 12, 16. Springs are checked with proper retainer - Spring pressure may vary +/-10%.
A: Special seals available to fit these springs. B: Use COM735 for +.050" installed height.

Hi-Tech Drag Race Valve Springs For High Valve Lift Applications
Designed for drag engines with valve lifts exceeding .750", springs have a very high level of fatigue resistance for extended life
and durability. High tech, super-clean chrome silicon material is held to tight stress relief and shot peen tolerances.
Load @ Checking Height Load @ Open Height Coil Bind Matched Retainers Lock
Part No. Description OD In. ID In. Lbs. In. Lbs. In. Ht. In. Steel Titanium Angle
COM26082-16 Triple Spring 1.645" .635" 332 2.100" 949 1.200" 1.130" — COM735/739 10°
COM26099-16 Dual Spring With Damper 1.625" .769" 245 2.050" 706 1.250" 1.205" — COM733 10°
COM26115-16 Dual Spring With Damper 1.549" .719" 230 2.050" 642 1.300" 1.225" COM748 COM732 10°

Ron Wirtjes

211