ROLLER LIFTER APPLICATION GUIDE - Crower

1 ROLLER LIFTER APPLICATION GUIDE2 For technical support call 619-661-6477 or visit *Requires a shorter pushrod fit Early & Late model Groups: #1 300-450 lbs. (See Page 3 for details.)Photo Shown Part # 66310LM Retro Fit Lock BladePhoto Shown Part # 66330 Stock Late Model Crower hydraulic ROLLER lifters combine the performance level characteristics of a ROLLER with the reliability of a hydraulic. Crower hydraulic lifters are precision flow checked for optimum leak down rates Completely redesigned body and bearing. Retro-fit hydraulic rollers are for early style blocks. All Crower hydraulic ROLLER lifters are precision flow checked for optimum reliabilityPushrodSeat HeightPushrodSeat HeightLifter Body DiameterSpring PressureGroupLifter Body DiameterSpring PressureGroup(Drop-in style - No Blade) LIFTER WeightLifter PushrodsChecking PushrodsChecking PushrodLengthCHEVROLET 262-400 V8 - Late Model CHEVROLET 396-454 V8 - Late Model CHEVROLET 396-454 V8 - Late Model (Truck/Tall Deck)DODGE Magnum V8 (set/16) - Late ModelDODGE Magnum V10 and Viper V10 (set/20) - Late Model FORD 302 V8 For Late Model 289-302 CHEVROLET SBC 265-400.

2 300" - Taller retro-fit CHEVROLET SBC 265-400 .300 Taller retro-fit with pin oilingCHEVROLET 396-454 V8 .300 - Taller retro-fit CHEVROLET 396-454 V8 .300 - Taller retro-fit (Truck/Tall Deck)CHEVROLET 396-454 V8 .300 Taller retro-fit with pin oilingGM LS1 FORD Small Block 289-302-351W - Retro-fit LIFTER FORD Big Block 429, 460 - Retro-fit lifterMOPAR Small Block 273-360 - Retro-fit LIFTER MOPAR Big Block 383-440 - Retro-fit lifterOLDSMOBILE retro-fit hydraulic ROLLER lifters PONTIAC retro-fit hydraulic ROLLER liftersLATE MOD-RETRO-FITH ydraulic ROLLER LiftersChecking PushrodLengthPart No.(Retro-Fit Rollers are linked pairs66330-16 66331-1666331-1666325-1666325-20 66335-1666310LM-16*1 66310H-1666321LM-16*1 66321LM-16*1 66321H-1666322-1666337-16 66338-1666339-16 66341-1666333-1666333-16- - - - - -- YES - -YES - - - " " " " " " " " " " " " " " " " Custom " "70478-2 70470-2 70461-2 70466 70466T 70477-270479-2 70479-270465 70465T 7046570477-2 70463-2 70499-2 70499-270462-270462-2- - - - - -- - - -- - ----1 1 1 1 1 11 1 1 11 1 1111113 For technical support call 619-661-6477 or visit : Spring pressure is not the only factor that needs to be addressed when determining what ROLLER spring group you need.)

3 Engines with NOS, Turbos or Blowers create very high cylinder pressures that the exhaust valves must have to open against. In these instances we recommend going with the highest group number that your LIFTER bore will HeightBlade HeightCrower cutawaybody lifters fit allraised LIFTER boreswhere .300 tallerblades are requiredCrower rollers are available in all popular designs (full body and cutaway) as well offsets, body longer, control contoured tapered needle bearings that deliver unsurpassed load capacity and correct for irregular tappet bearing slot provides more shrouding around critical bearing area reducing tappet and LIFTER bore one piece body reduces weight without compromising strength and delivers the utmost in rigidity and axle trueness. Crower s beefy blades are made from premium stainless steel alloy to ensure the absolute strongest fastening system oiling features oil metering hole that delivers plenty of lubrication to the needle bearings and oil metering holes deliver plenty of oil flow to the overhead, vital for longer pushrod and valve spring ROLLER LIFTER tappets feature crowned bearings and crowned outer race that greatly reduces lobe tracking.

4 Captive blades are secured with Crower s exclusive orbit formed locking mechanism for permanent spool machined, heat-treated body for best possible wear orbit formed pin eliminates snap rings that could come ROLLER LiftersHydraulic ROLLER LIFTER : For Hydraulic ROLLER camshaft applications. Suitable for Hydraulic ROLLER cam designs Pressure Group #1 Original Crower ROLLER -Full Body Style: These were designed for early GM Blocks and are Entry level ROLLER and the lowest priced Crower mechanical ROLLER LIFTER . Suitable for mild to semi aggressive cam designs. Available in .842 & .874 diameter Pressure Group #2Hi-Seat Offset Rollers-Integral Rev-kit Button Style: High-Seat rollers feature a .180 offset pushrod seat and integral rev kit button which allows for shorter push rods, reducing flex and weight for improved valve control.

5 Suitable for aggressive cam designSpring Pressure Group #3 Severe Duty ROLLER -Cutaway Style: Designed for higher spring pressures, greater push-rod clearance and available in offsets to suit most aftermarket cylinder heads. Available in .842, .874, .903,.937 diameters. The oversized (.903 & .937 ) diameters help distribute the load of increased spring pressures by incorporation a larger diameter bearings. Suitable for aggressive cam designsSpring pressure groups:# 3,5,8 EnduraMax ROLLER -Bushed Bearing Style: Designed for higher spring pressures when larger diameter rollers are not an option or in the larger diameter lifters where spring pressures are extreme. The spring pressures exerted on the ROLLER are disbursed over the full surface area of the bushed bearing. Engine blocks must have oil available to the LIFTER .

6 Available in .842, .874, .903,,937 diameters. Suitable for Aggressive Cam DesignsSpring Pressure Groups:# 4,6,9 Maximus ROLLER -Large Diameter Needles, Tool Steel Pin & Outer race: Typical Applications for this ROLLER LIFTER are Top Fuel, Blown Alcohol. The Maximus ROLLER LIFTER incorporates large diameter needles, matched tool steel axle and outer bearings to create the optimum rolling element. Available in .903 and .998 OD. Suitable for Aggressive Cam design. Note: 1 1/16 OD for Top Fuel - Coming Pressure Groups: #7 & 10 Group#Open Spring PressureAPPLICATION GUIDELINES1 - 300-4502 - 680-7503 - 750-9004 - 900-10005 - 1000-13006 - 1050-13507 - 1150-13508 - 1200-14009 - 1250-145010 - 1400+4 For technical support call 619-661-6477 or visit LOCK ROLLERSC rower has Groove Lock Rollers available for Flat Head Ford, and Diesel Applications.

7 Call Crower for availability and pricing. GROOVE LOCKROLLERS DRILL JIG6627466575 Crower 'S ORIGINAL FULL BODY ROLLER LIFTERSThe best ROLLER tappets on the market. Delivers 200% more life expectancy than competing brands. Features crowned bearings and crowned outer race that greatly reduces lobe tracking. No available in pairs by replacing -16 with HeightLifter Body DiameterSpring PressureGroupPart WeightTall LifterBore Block* II 4 cylinderCHEVROLET '62-up 194-250 6 cylinderCHEVROLET V8 '55-up 262-400 cu. V8 Small Block .300 taller bodyCHEVROLET V8 '55-up 262-400 cu. V8 '64-up Big BlockCHEVROLET V8 Big Block .300 taller bodyCHEVROLET V8 '64-up Big BlockCHEVROLET V8 '58-'65 348-409 cu. V8 '64-'84 260-455 cu. V8 '55-up 326-455 cu. ".8415".8415".8415".8731".8415".8415".87 31".8415".8415".8415" " " " " " " " " " " " ".

8 750".750".750".750".750".750".750".750". 750".750"*Tall LIFTER Bore Block (tappets fit blocks with taller LIFTER bores) Crower ROLLER lifters are Technology allows Crower engineers to place a precision hole directly from the oil band to the needle bearings. Delivers more oil to critical, high load areas for greatly improved cycle life. Specify H after LIFTER part number to order (ex. 66200H-16).HIPPO (High-Pressure Pin Oiler)For High Pressure Pin Oiling (HIPPO), specify H after : 66200H-16 High Pressure Pin Oiling (HIPPO)Solid ROLLER LiftersSpring Groups: #2 680-750 lbs. (See Page 3 for details.)5 For technical support call 619-661-6477 or visit ROLLER LiftersRoller LIFTER Sizes & Bore SizesAluminum BlockLifter BoreCast Iron BlockLifter BoreRoller LIFTER Size+/- .0002 ".8731".9031".9361".9890".

9 9975".001/.0015 "/.8430".8741"/.8746".9041"/.9046".9371" /.9376".9900"/.9905".9985"/.9990".002/.0 025 "/.8440".8751"/.8756".9051"/.9056".9381" /.9386".9910"/.9915".9995" "Note: OIL RESTRICTORS ARE NOT RECOMMENDEDEDM Technology allows Crower engineers to place a precision hole directly from the oil band to the needle bearings. Delivers more oil to critical, high load areas for greatly improved cycle life. Specify H after LIFTER part number to order (ex. 66200H-16).HIPPO (High-Pressure Pin Oiler)When ordering only pairs of ROLLER lifters:SB Chevy 1, 4, 5, 8 cylinders, specify L for left o setex. #66292X937L-2 and be sure to specify cylinder Chevy 2, 3, 6, 7 cylinders, specify R for right o setex. #66292X937R-2 and be sure to specify cylinder CHEVYExhLef tCylinder #1, 4, 5, 8 IntBB CHEVYIntExhRightCylinder #2, 3, 6, 7 Lef tCylinder #1,4, 5, 8 RightCylinder #2, 3, 6, 7 ExhIntExhIntSB/BB FORDSBC w/SB2 HeadCUSTOM CONFIGURATION ROLLERSC rower can build your lifters to your exact configuration.

10 Don't see what you need from our wide selection of lifters? Give us a call and speak to one of our techs and let us build you a custom set of lifters to your specs. ABCDHI-SEAT OFFSET ROLLERSC rower s High-Seat rollers feature a .180" offset, integral rev-kit button and Crower s High-Seat pushrod design. Allows for shorter pushrods, reducing flex and weight for more valve Body DiameterSpring PressureGroupPart WeightCHEVROLET 265-400 V8 .842"CHEVROLET 265-400 V8 .874" ".8731"33 NONO136g147gTall LifterBore Block*Spring Groups: #3 750-900 lbs. (See Page 3 for details.) 6 For technical support call 619-661-6477 or visit ROLLER LiftersWarning: Never submerse ROLLER lifters in parts washers due to possible contamination from suspended metal fines in the CUTAWAY ROLLER LIFTERSA must for high cylinder pressure, high rpm applications.