Pantera EFI Dual Valve Springs use micro polished ALPA III Material and provide 150# spring presure at 1.800 installed height and 425# of open presure at .650 lift. Use with SB1250-505 Spring bases and UVO5001 Metal Clad Viton Seals.
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Welcome
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427 POWER PACKAGE
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LS1 Injection Stacks
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LS1 Crankshafts
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LS1 Stainless Steel Valves
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LS1 Titanium Retainers
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|LS1 Dual Springs|
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LS1 Guide Plates
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LS1 Oil Pan
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LS1 Roller Rockers
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LS1 Pulleys
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90MM Throttle Bodies
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ECU- 882C
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Dyno Tests
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L92 - LS3 Heads
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Fuel Pumps
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