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Charts & Guides for Part Number SUM-174043D-1
BBC 1.625 Dual Springs, Solid Roller .900 Max Lift @ 280 Lb. seat @ 2.100 Installed, 847 Lb. @ 1.150 Open, 1.100 C.B., 629 Rate, 152g Like PAC 1228
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Overview
Brand:
Manufacturer's Part Number:
SUM-174043D-1
Part Type:
Product Line:
Summit Racing Part Number:
SUM-174043D-1
UPC:
190861357037
Valve Spring Style:
Standard
Number of Springs Per Valve:
Dual
Maximum Valve Lift (in.):
0.900 in.
Retainers Included:
No
Outside Diameter of Outer Spring (in.):
1.625 in.
Coil Bind Height (in.):
1.100 in.
Damper Spring Included:
No
Spring Rate (lbs./in.):
629 lbs./in.
Inside Diameter of Outer Spring (in.):
1.175 in.
Inside Diameter of Inner Spring (in.):
0.851 in.
Locks Included:
No
Valve Stem Seals Included:
No
Valve Springs Coated:
No
Remanufactured:
No
Quantity:
Sold individually.
Notes:
Solid roller double spring - 152 gram weight for less combined spring retainer rate.
Installed Height (in.):
2.100 in.
Seat Pressure at Installed Height (lbs.):
280 lbs.
Open Height (in.)(application):
1.150
Open Pressure (lbs.):
847 lbs.
Summit Racing™ Valve Springs
Valve springs are one of the most critical and overlooked components in your engine. They must be matched to your cam in order for the engine to reach its full potential. Summit Racing™ springs are made from high quality steel with precision winding and surface treatments. Special consideration for reduced valvespring and retainer mass ensures stability at high rpm. This reduces valve float, extends the rpm range, and greatly reduces valvetrain wear.
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Instructions & Calculators
Some parts are not legal for use in California or other states with similar laws / regulations
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