1975 C30 2wd front coil springs

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1975 fleet

Junior Member
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Jul 24, 2020
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Location
Santa Rosa, CA
First Name
Jon
Truck Year
1975
Truck Model
C10 SWB
Engine Size
396
What is the difference between the one ton front coils & the HD one ton coils?
 

Vbb199

B-rate Hillbilly Customs
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Location
Salisbury NC
First Name
Vince
Truck Year
89, 79
Truck Model
89 Suburban R1500, 79 C10
Engine Size
350, 502
Maybe HD for a higher gwvr ?

Or HD for a big block

I know in 1500/10 coils, the HD are for the off chance the half ton had a big block...
They're basically 3/4 ton coils, but I think slightly smaller

I have HD coils in the front of my r1500 burb... they're still 1/2 ton, but HD
 

fast 99

Full Access Member
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Location
Spokane, Washington
First Name
Brian
Truck Year
81,85
Truck Model
K20
Engine Size
350
Possibly the GVW? Some were 10k others 11k. Had a couple 11K trucks but they were later model. One was a small block. The big block 11K truck had an air bag inside the front coil from the factory.
 

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