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Old 11-12-2020, 05:15 PM   #1
MJN
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Join Date: Feb 2000
Location: Maquoketa, Ia/ Orr, Mn
Posts: 2,983
3/4 ton front springs

So, I've asked this on a couple FB groups as well but I'm looking to get new spring packs made for my '56 3600 Napco. The GM Data book/info packet shows 3/4 tons (3600) got front spring packs with 6 leaves- the master parts catalog also confirms this. My truck has 8 leaves- no idea if when it was converted to a Napco heavier springs were installed. They look factory and have the double wrap at the rear pivot and the spring clips in the factory locations. It did have a heavy snow plow on it prior to me buying it. 8 leaf spring packs, according to the parts catalog and data book, were for Forward Control chassis and 4000 and heavier trucks. Does anyone have a 3/4 ton pickup with 8 leaf front spring packs?

My rear packs have 9 leaves and match what the book says- besides the lift block added for the Napco conversion.
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'51 South Bend Model "9A"
'56 Chevy 3600 NAPCO
'74 Chevy Cheyenne Super K20-restored on 37's
'72 GMC Sierra Custom K2500- in progress
'08 GMC Envoy Denali
'12 GMC Sierra 2500HD Denali
'17 GMC Yukon XL
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