PAC Springs

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PAC Racing Springs now in stock! 

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PAC PART NUMBER

SPRING TYPE

OD (LARGE END)

ID (SMALL END)

INSTALLED HEIGHT

LOAD (INSTALLED HEIGHT)

COIL BIND (MAX)

 
PAC1218X16 BEEHIVE 1.307 0.65 1.8 135 1.1  
PAC1218-16 BEEHIVE 1.29 0.65 1.8 130 1.14  
PAC1223-16 BEEHIVE 1.1049 0.58 1.47 90 0.9  
PAC1214-16 BEEHIVE 1.071 0.636 1.6 100 1.04  
PAC1215-16 BEEHIVE 1.29 0.65 1.8 105 1.14  
PAC1201-16 CIRCLE TRACK ENDURANCE 1.26 0.77 1.75 140 1.115  
PAC1326-16 CIRCLE TRACK ENDURANCE 1.55 0.706 2 275 1.15  
PAC1243-16 CIRCLE TRACK ENDURANCE 1.55 0.812 1.9 240 1.15  
PAC1201X16 CIRCLE TRACK ENDURANCE 1.26 0.77 1.75 150 1.115  
PAC1200-16 CIRCLE TRACK ENDURANCE 1.244 0.77 1.75 125 1.1  
PAC1245-16 CIRCLE TRACK ENDURANCE 1.55 0.812 2 240 1.2  
PAC1227-16 CIRCLE TRACK ENDURANCE 1.539 0.731 1.95 200 1.13  
PAC1239-16 CIRCLE TRACK ENDURANCE 1.55 0.72 2.05 220 1.18  
PAC1210X-16 CLASS & SPECIALTY - CIRCLE TRACK 1.245 NA 1.7 87 1.15  
PAC1212X16

CLASS & SPECIALTY - CIRCLE TRACK

1.355 NA 1.75 125 1.18  
PAC1409X16 CLASS & SPECIALTY - DRAG RACE 1.25 0.65 1.8 175 1.19  
PAC1427-16 CLASS & SPECIALTY - DRAG RACE 1.454 0.65 1.85 200 1.19  
PAC1224-16 DRAG SPRING 1.625 0.851 2 275 1.1  
PAC1225-16 DRAG SPRING 1.55 0.788 2 250 1.15  
PAC1226-16 DRAG SPRING 1.55 0.706 2 275 1.15  
PAC1228-16 DRAG SPRING 1.625 0.851 2.1 280 1.1  
PAC1258-16 DRAG SPRING 1.645 0.635 2.15 350 1.13  
PAC1249-16 DRAG SPRING 1.645 0.635 2.2 375 1.13  
PAC1248-16 DRAG SPRING 1.645 0.635 2.1 332 1.13  
PAC1905-16 DUAL (HOTROD SERIES) 1.304 0.694 in. 1.8 160 1.02  
PAC1924-16 DUAL (HOTROD SERIES) 1.54 0.754 in. 1.9 144 1.125  
PAC1908-16 DUAL (HOTROD SERIES) 1.465 0.807 in. 1.688 106 0.91  
PAC1209X16 DUAL SPRING (RPM SERIES) 1.324 0.68 1.8 160 1  
PAC1204X16 DUAL SPRING (RPM SERIES) 1.29 0.694 1.8 145 1  
PAC1207X16 DUAL SPRING (RPM SERIES) 1.304 0.68 1.8 155 1  
PAC1208X16 DUAL SPRING (RPM SERIES) 1.324 0.694 1.8 160 1  
PAC1909-16 HOTROD SINGLE WITH DAMPER 1.255 0.781 in. 1.7 110 1.15  
PAC1217X16 RPM SERIES 1.061 0.525 1.6 115 0.965  
PAC1234X16 RPM SERIES 1.021 0.525 1.5 110 0.941  
PAC1230X16 RPM SERIES 1.083 0.636 1.715 120 1.089  
PAC1223X16 RPM SERIES 1.1049 0.58 1.47 90 0.9  
PAC1231X16 RPM SERIES 1.083 0.636 1.575 120 0.952  
PAC1218X16 RPM SERIES BEEHIVE SPRING (LS ENGINE) 1.29 0.65 1.8 140 1.14  
PAC1219X-16 RPM SERIES BEEHIVE SPRING (LS ENGINE) 1.307 0.65 1.8 145 1.1  
PAC1211X16 RPM SERIES BEEHIVE SPRING (LS ENGINE) 1.29 0.65 1.8 130 1.1  
 

Valve Spring Retainers

 

 
PART NUMBER MATERIAL  Outside Diameter (A) 1st Step Diameter (B) 2nd Step Diameter(C) 3rd Step Diameter (D) Lock Angle Mass (grams)
PAC-R310-16 CHROME MOLY STEEL 1.035 0.64 N/A N/A STD 10 10.2
PAC-R464-16 TITANIUM 0.795 0.517 N/A N/A FMOD  4
PAC-R311-16 CHROME MOLY STEEL 1.035 0.64 N/A N/A LS (7) 10.4
PAC-R315-16 CHROME MOLY STEEL 1.475 1.11 0.71 N/A STD 10 26.3
PAC-R317-16 CHROME MOLY STEEL 1.325 0.99 0.7 N/A STD 10 26.3
PAC-R508-16 TITANIUM 1.365 1.04 0.715 N/A STD 10 12.9

 

PAC-R405-16

TITANIUM 1.45 1.09 0.78 N/A STD 10 16.6
PAC-R504-16 TITANIUM 1.475 1.165 0.84 N/A STD 10 17
PAC-R505-16 TITANIUM 1.4 1.09 0.78 N/A STD 10 15
PAC-R506-16 TITANIUM 1.4 1.09 0.695 N/A STD 10 14.4

Valve Spring Seats

PART NUMBER MATERIAL  Stepped Seat Outside Diameter (A) 1st Step Diameter (B) Valve Guide Hole Size Thickness Weight
PAC-S111-16 TOOL STEEL No 1.27 0.87 0.57 0.06  
PAC-S103-16 TOOL STEEL No 1.55 0.77 0.575 0.06  
PAC-S134-16 CHROME MOLY No 1.5 0.715 0.570** 0.03  
PAC-S101-16 CHROME MOLY No 1.55 0.855 0.575 0.06  
PAC-S105-16 CHROME MOLY No 1.55 0.7 0.575 0.06  
PAC-S110-16 CHROME MOLY No 1.5 0.715 0.57 0.06  
PAC-S112-16 CHROME MOLY No 1.45 0.98 0.57 0.06  

Valve Spring Retainer Lock

Part Number Material Valve Size Installation Height Lock Type Lock Angle Groove Type Lash Cap Recess (Y/N)
PAC-L8025-16 Steel 11/32 STD STD 10 10° Square Y
PAC-L8141-16 Steel 8mm STD Mini 8 Radius N
PAC-L8027-16 Steel 11/32 0.05 STD 10 10° Square Y
PAC-L8113-16 Steel 8mm STD LS-1 Radius N

KITS

Tools

PAC-KS11 General Motors LS Engine Hotrod Series Dual LS Spring Kit PAC-T901 Valvetrain Tool I.H.  Gage- beehive 1.4000-2.00 range (blue)
PAC-KS13 General Motors LS Engine LS Engine Kit, PAC-1219 Beehive Spring Kit w/ Chrome Moly Retainer PAC-T902 Valvetrain Tool I.H.  Gage- Standard 1.8000-2.600 range (red)
PAC-KS14 General Motors LS Engine LS Engine Kit, PAC-1218 Beehive Spring Kit w/ Chrome Moly Retainer PAC-T903 Valvetrain Tool 1.400" to 1.900" Height MIC - Orange

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