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PAC Racing Springs LS Extreme Duty Dual Springs, Set of 16, PAC-1237X

PAC Racing Springs LS Extreme Duty Dual Springs, Set of 16, PAC-1237X

Original price was: $495.00.Current price is: $470.25.

PAC Racing Springs Extreme Duty Dual Springs are a severe duty, dual valve spring designed for lightweight valvetrain applications. Direct replacement for most aftermarket cylinder heads with LSx style springs. This…

SKU: PAC-1237X Categories: , Brand:

Description

PAC Racing Springs Extreme Duty Dual Springs are a severe duty, dual valve spring designed for lightweight valvetrain applications. Direct replacement for most aftermarket cylinder heads with LSx style springs.

This spring can be used in most severe duty hydraulic roller and some solid roller valvetrains and features PAC Racing’s patented materials and wire construction.

Part# I.D.
Outer (in)		 O.D.
Outer (in)		 Inside
Spring
I.D.
(in)		 Install
Load
(LB)		 Install Height
(in)		 Open Load
(LB)		 Open Height
(in)		 Coil Bind
Max (in)		 Lift Max
(in)		 Frequency
Outer
(CPM)		 Frequency
Inner
(CPM)		 Damper Quantity
PAC-1529 1.284 0.9 0.630 180 1.900 600 1.150 1.085 .750 32185 34200 No 1
PAC-1530 0.900 1.284 0.616 160 2.000 580 1.250 1.180 0.750 29735 32947 No 1
PAC-1335 0.900 1.3 0.616 250 1.800 860 1.050 0.985 0.800 40679 44180 N/A 1
PAC-1237X 1.274 0.9 200 @ 1.800 585 @ 1.100 550 N/A PAC-S128 N/A 1
PAC-1238X 1.274 0.9 250 @ 1.800 700 @ 1.050 600 N/A PAC-S128 N/A 1

Additional information

Weight 80 oz

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