Page 433 - 2020-2021 Racecar Engineering Drag Racing Parts and Accessories Catalog

2020 DRAG RACING

GM LS NexTek Valve Spring Kits NEW!
All-in-one kits save time and expense when selecting the proper valve springs and related compo-
nents. Designed for popular GM LS engines, each kit is complete with (16) high-performance NexTek
valve springs, (16) valve spring locators, (16) 7° retainers, (16 pair) 7° machined valve locks, and
(16) Viton valve stem seals. Choose from kits with steel or lightweight titanium retainers.
Part No. Description
MAN26362134KS Valve Spring Kit With Steel Retainers, .660" Max Lift
MAN26362334KS Valve Spring Kit With Titanium Retainers, .660" Max Lift
NexTek Series Drag Race Valve Springs
Springs deliver excellent performance, better valve train stability, and longer component life. Ideal for Super Stock, Super Gas,
Competition Eliminator, Pro Stock, alcohol, and “mountain motor” applications.
Part No. Description Max. Lift O.D. I.D. Installed Pressure Open Pressure Coil Bind
MAN221424-16 S/Gas, S/Comp, Bracket .880" 1.640" .860" 250 @ 2.000" 850 @ 1.150" 1.070"
MAN221425-16 S/Gas, S/Comp, Bracket .900" 1.640" .860" 280 @ 2.100" 794 @ 1.250" 1.150"
MAN221431-16 Chrysler Hemi 5.7/6.1L, Ovate .650” 1.311” .650” 145 @ 1.811” 380 @ 1.150” 1.100”
MAN221447-16 S/Stock, Pro Mod, Comp. .800" 1.677" .635" 350 @ 2.000" 895 @ 1.270" 1.160"
MAN221448-16 S/Stock, Pro Mod, Comp. .900" 1.677" .635" 350 @ 2.100" 1010 @ 1.200" 1.142"
MAN221449-16 Pro Stock, Top Alc./Fuel 1.000" 1.677" .632" 350 @ 2.200" 1070 @ 1.200" 1.142"
MAN221455-16 Comp. Eliminator 1.000" 1.500" .719" 438 @ 2.175" 1235 @ 1.175" 1.130"

10° Titanium Retainers Pro Valve Spring Cups And Locators
Manley’s 6AL 4V titanium 10° retainers .062" thick and manufactured with CNC equip-
offer durability for drag racing engines. ment for accuracy and consistency. The ID-style
Sets of 16. cups grip the valve guide and control valve
Spring Spring Dimensions spring movement with a special wall to the inside
Part No. Type Height O.D. A B C D diameter. Heads must be machined to accept the OD-style
MAN23640-16 Double +.100" 1.625" 1.500" 1.175" .850" — cups. 16-pieces per part number.
MAN23644-16 Double Std. 1.550" 1.500" 1.140" .740" —
MAN23648-16 Double +.100" 1.580"/1.610" 1.500" 1.150" .825" — Wall Shoulder
MAN23649-16 Double Std. 1.625" 1.500" 1.175" .850" — Part No. Type Fits Spring OD Cup OD Cup ID Height Dia.
MAN23650-16 Double +.100" 1.550" 1.500" 1.140" .740" — MAN42317-16 ID 1.550" 1.535" .570" .140" .720"
MAN23653-16 Triple +.100" 1.660" 1.500" 1.185" .860" .620" MAN42324-16 ID 1.311" 1.300" .812" .145" .875"
MAN23655-16 Double +.100" 1.625" 1.500" 1.175" .765" — MAN42364-16 ID 1.660" 1.660" .570" .140" .630"
MAN23658-16 Double Std. 1.550" 1.500" 1.105" .710" — MAN42371-16 OD 1.660" 1.740" .635" .140" —
MAN23661-16 Double +.100" 1.550" 1.500" 1.120" .705" — MAN42372-16 OD 1.650" 1.740" .570" .140" —
MAN23662-16 Triple +.100" 1.625" 1.500" 1.190" .875" .640"

Kaden & Dezarae Goebel (With Grandparents)

432