Factory 4 leaf front springs?

[B_derK20]

Did GM ever put 4 leaf front springs underneath 1-ton trucks? I snagged a pair of factory-appearing ones from an '85 dually out of the junk yard the other day just because they were there, but I was wondering what they would do to the height of my stock '83 K20. Does anyone know? I'm sure it'll make it ride like a dump truck but thats ok.
Thanks!

[Dooley]

Originally Posted by B_derK20

Did GM ever put 4 leaf front springs underneath 1-ton trucks? I snagged a pair of factory-appearing ones from an '85 dually out of the junk yard the other day just because they were there, but I was wondering what they would do to the height of my stock '83 K20. Does anyone know? I'm sure it'll make it ride like a dump truck but thats ok.
Thanks!

The K30 trucks had 3 leaf fronts. Most owners that run snowplows would add the 4th leaf.

Pic #1 is a K30.
Pic #2 and #3 is a K10 with a 8.5' Western plow setup.

[kwmech]

My '78 1 ton tow truck has a 4 leaf front pack on it.

[Dooley]

Originally Posted by kwmech

My '78 1 ton tow truck has a 4 leaf front pack on it.

It didn't come from GM that way. Someone changed/added a leaf at some point. I bought new K30's in 1977, 1979, 1980, and 1988 and all of them had 3 leafs in front. I added a leaf to the 79. The wrecking yard near me has a 78 K30 tow truck and it has 3 leaf front spring pack also.

As for the K10/20's owned by me, I added a leaf to every square body that I had put a plow on.

Some guys would add an extra leaf if they were running a big winch/bumper on the front.

[maxwoof]

My 62 k20 has 4 leaves in the front. As far as I know, it is all original.
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[Dooley]

Originally Posted by maxwoof

My 62 k20 has 4 leaves in the front. As far as I know, it is all original.
Posted via Mobile Device

The original post was about a set of springs from a 1985 1ton 4x4. This thread has been about stock 1ton square body truck front springs, which would cover 1977-91.

Pic of my 1986 CUCV D30 which has 3 front leafs also.