PAC Racing Springs Racing Springs

Pac Racing Springs is the world's premier valve spring manufacturer.  Top Fuel, Top Alcohol, Top Doorslammers to everyday street performance engines use PAC Racing products to provide unsurpassed performance in all forms of Motorsports.  Innovative designs produced by skilled springmakers from the highest quality materials ensure the highest performing springs available.

Drag Race Springs

Part # Spring Diamters Spring Loads
 Spring Rate Max Coil Bind Max Lift Comments
OD Outer
 OD Outer OD Middle OD Inner Installed Height
(Valve Closed)		 Open Load
(Valve Open)

1200 Series features PAC Spring's Standard HP processing without scrificing performance.
PAC 1224 1.625
 1.175
 N/A
 0.851
 275 @ 2.000 810 @ 1.150
 629
 1.100
 0.850
 Dual Spring - Bracket - High lift
PAC 1228 1.625
 1.175
 N/A
 0.851
 280 @ 2.100
 847 @ 1.200
 629
 0.900
 0.850
 Dual Spring - Bracket  - High lift - agressive cam and RPM
PAC 1225 1.550 1.100 N/A 0.788 250 @ 2.000 765 @ 1.200 644 1.150 0.800 Small Dia. Dual Spring
PAC 1226 1.550
 1.100
 N/A
 0.706
 275 @ 2.000
 805 @ 1.200
 663
 1.150
 0.800
 Small Dia. Dual Spring with Damper
PAC 1298
 1.625
 1.175
 N/A
 0.769
 250 @ 2.000
 648 @ 1.300
 564
 1.210
 0.700
 Dual Spring with Damper - lower lift
PAC 1299
 1.625
 1.175
 N/A
 0.769
 250 @ 2.050
 673 @1.300
 564
 1.210
 0.750
 Dual Spring with Damper - lower lift
PAC 1246
 1.645
 1.195
 0.871
 0.635
 250 @ 2.050
 801 @ 1.250
 689
 1.130
 0.800
 Triple Spring - Bracket Race
PAC 1247
 1.645
 1.195
 0.871
 0.635
 290 @ 2.070
 835 @ 1.270
 682
 1.130
 0.800
 Triple Spring - Bracket Race
PAC 1248
 1.645
 1.195
 0.871
 0.635
 332 @ 2.100
 950 @ 1.200
 687
 1.130
 0.900
 Triple Spring - Bracket Race
PAC 1249
 1.645
 1.195
 0.871
 0.635
 385 @ 2.200
 1074 @ 1.200
 689
 1.130
 1.000
 Triple Spring - High Lift - Top Fuel
PAC 1250
 1.645
 1.195
 0.871
 0.635
 440 @ 2.200
 1129 @ 1.200
 689
 1.130
 1.000
 Triple Spring - High Lift - Top Fuel
PAC 1258
 1.645
 1.195
 0.871
 0.635
 350 @ 2.150
 1004 @ 1.200
 688
 1.130
 0.950
 Triple Spring - Bracket Race

1300 Series are premium processed with Nano-Peened™ surfaces for enhanced durability & exotic heat treatment for minimal load loss
PAC 1324
 1.625
 1.175
 N/A
 0.851
 275 @ 2.000
 810 @ 1.150
 629
 1.100
 0.850
 Dual Spring - Bracket - High lift
PAC 1328
 1.625
 1.175
 N/A
 0.851
 280 @ 2.100
 847 @ 1.200
 629
 1.100
 0.900
 Dual Spring - Bracket - High lift
PAC 1325
 1.550
 1.100
 N/A
 0.788
 250 @ 2.000
 765 @ 1.200
 644
 1.150
 0.800
 Small Dia. Dual Spring
PAC 1326 1.550
 1.100
 N/A
 0.706
 275 @ 2.000
 805 @ 1.200
 663
 1.150
 0.800
 Small Dia. Dual Spring with Damper
PAC 1346
 1.645
 1.195
 0.871
 0.635
 250 @ 2.050
 801 @ 1.250
 689
 1.130
 0.800
 Triple Spring - Bracket Race
PAC 1347
 1.645
 1.195
 0.871
 0.635
 290 @ 2.070
 835 @ 1.270
 682
 1.130
 0.800
 Triple Spring - Bracket Race
PAC 1348
 1.645
 1.195
 0.871
 0.635
 332 @2.100
 950 @ 1.200
 687
 1.130
 0.900
 Triple Spring - Bracket Race
PAC 1358 1.645
 1.195
 0.871
 0.635
 350 @ 2.150
 1004 @ 1.200
 688
 1.130
 0.950
 Triple Spring - Bracket race
PAC 1349 1.645
 1.195
 0.871 0.635
 385 @ 2.200
 1074 @ 1.200
 689
 1.130
 1.000
 Triple Spring - Pro Stock/ Top Fuel
PAC 1350 1.645
 1.195
 0.871 0.635
 440 @ 2.200
 1129 @ 1.200
 689
 1.130
 1.000
 Triple Spring - Pro Stock/ Top Fuel
PAC 1351 1.667
 1.195
 0.871 0.635
 450 @ 2.300
 1240 @ 1.250
 752
 1.160
 1.050
 Triple Spring - Pro Stock
PAC 1352 1.681
 1.195
 0.871 0.635
 480 @ 2.300
 1315 @ 1.250
 795
 1.190
 1.050
 Triple Spring - Pro Stock
PAC 1353
 1.695
 1.195
 0.871 0.635
 500 @ 2.300
 1500 @ 1.200
 900
 1.140
 1.100
 Triple Spring - Pro Stock
PAC 1362
 1.725
 1.225
 0.871
 0.635
 475 @ 2.300
 1515 @ 1.200
 945
 1.134
 1.100
 Triple Spring - Pro Stock
PAC 1363
 1.725
 1.225
 0.871
 0.635
 525 @ 2.350
 1565 @ 1.250
 945
 1.134
 1.200
 Triple Spring - Pro Stock
PAC 1364
 1.681
 1.195
 0.871
 0.635
 525 @ 2.300
 1365 @ 1.300
 840
 1.100
 1.100
 Triple Spring - Pro Stock

Next generation springs feature all of the material & processing features of the 1300 searies with smaller diamters for minimal weight increased valve train stability & high RPM's
PAC 1335
 1.300
 0.900
 N/A
 0.616
 250 @ 1.800
 860 @ 1.050
 813
 0.985
 0.800
 Suit LS Style engines. Lightweight for aggressive valve trains - Very High RPM potential
PAC 1354 1.550 1.050 N/A 0.726 425 @ 2.300 1440 @ 1.300 1015 1.230 1.000 Dual Pro stock Intake Spring
PAC 1329
 1.500
 1.050
 N/A
 0.726
 350 @ 2.100
 1052 @ 1.200
 780
 1.130
 0.900
 Dual High lift
PAC 1355 1.500 1.050 N/A 0.726 420 @ 2.175 1200 @ 1.175 780 1.130 1.000 Dual Pro Stock Exhaust Spring
PAC 1356 1.500 1.050 N/A 0.726 300 @ 2.100 1002 @ 1.200 780 1.130 0.900 Dual Drag Spring
PAC 1330
 1.500
 1.050
 N/A
 0.726
 275 @ 2.050
 792 @ 1.200
 780
 1.130
 0.850
 Dual High lift
PAC 1357 1.500 1.050 N/A 0.726 375 @ 2.150 1116 @ 1.200 780 1.130 0.950 Dual High lift
PAC 1355
 1.500
 1.050
 N/A
 0.726
 420 @ 2.175
 1200 @ 1.175
 780
 1.130
 1.000
 Dual High lift - works well in TA/FC & T/D
PAC 1359
 1.522
 1.050
 N/A
 0.726
 375 @ 2.200
 1200 @ 1.300
 895
 1.190
 0.900
 Dual High lift - works well in TA/FC & T/D
PAC 1360 1.522 1.050 N/A 0.726 400 @ 2.250 1252 @ 1.300 895 1.190 0.950 Dual High lift - Short version 1354
PAC 1362 1.725 1.225 0.871 0.635 475 @ 2.300 1515 @ 1.200 945 1.134 1.100 Triple Spring - Pro Stock
PAC 1363 1.725 1.225 0.871 0.635 525 @ 2.350 1565 @ 1.250 945 1.134 1.100 Triple Spring - Pro Stock

 

PAC Racing Spring- Triple Valve Spring vs. Dual Valve Spring

  

High Perfomance valve spring testing 10K RPM

  
     
AUSTRALIA'S LARGEST SUPPLIER OF HIGH PERFORMANCE ENGINE PARTS!

 

Performance Wholesale Australia Pty Ltd is Australia’s largest supplier of high performance engine parts. Bill Mann Performance Engines started as a machine shop assembling high performance engines for customer’s racecars in 1976. This is how importing engine components began so Bill could test the latest parts direct from the USA. As this part of the business grew, he decided to open Performance Wholesale in 1986 so he could supply the best engine components available for any type of race engine. It has grown from strength to strength over the years with one of the best sales and technical teams in Australia able to support and advise customers on their high performance motorsport and race engine requirements.

Our reputation is built on supplying our customers with the best brands of high performance parts for their application. We supply the motorsport industry with the best products and the best technical support.

 

Looking for one of our other websites?

qss

 

hks

 

driven