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02-05-2020, 12:10 AM
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#1 |
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Registered User
Join Date: May 2019
Location: Hathaway Pines, CA
Posts: 120
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Option Number G50
I completely enjoy figuring this stuff out and all the input from the
Members, Thanks I just got a 1971 K20 and it came with option number G50 “ Heavy Rear Spring” My question is; Does anyone know the number of leafs in the G50 rear spring -vs- the stock spring ? -or- Is the option over load springs ? Option F60 “ Heavy Front Spring “ is also an Option for this new to me Pickup and I would like the same question answered about the number of leafs for stock -vs- the F60 Option . I know the front springs are not original on this pickup, the originals have been replaced with some lift kit springs. Thanks for all input again ..
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48 CJ2A 63 1500 GMC (LS1 w/ Muncie 4spd) 68 RS Camaro 71 K20 BBC & granny 4 speed 95 2500 4x4 17 HD2500 4x4 Want => 67 C10 short bed w/ Manual Tranny |
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02-05-2020, 02:30 AM
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#2 |
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Account Suspended
 Join Date: Jul 2016
Location: Tacoma, WA
Posts: 6,873
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Re: Option Number G50
Heavy duty front springs get you 3 leaf instead of 2 leaf. Rear i dont know
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02-09-2020, 01:51 PM
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#3 |
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Registered User
Join Date: May 2019
Location: Hathaway Pines, CA
Posts: 120
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Re: Option Number G50
This truck has the option code G50. I am curious if the 6 leaf spring is the option, or the overloads, or both ? If someone with a K20 can let me know the number of rear leafs it would be great
Thanks
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48 CJ2A 63 1500 GMC (LS1 w/ Muncie 4spd) 68 RS Camaro 71 K20 BBC & granny 4 speed 95 2500 4x4 17 HD2500 4x4 Want => 67 C10 short bed w/ Manual Tranny |
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02-09-2020, 02:09 PM
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#4 |
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Carpe manana
  
Join Date: Dec 2010
Location: Eau Claire, WI
Posts: 12,424
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Re: Option Number G50
The rear G60 aux springs were not available on K trucks I believe.
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1972 K5 CST Highlander Blazer: http://67-72chevytrucks.com/vboard/s...d.php?t=708547 1972 K20 Cheyenne Super: http://67-72chevytrucks.com/vboard/s...d.php?t=528308  Members met: ORANGBLAZ, 2003 silverado, MikeCofield, BB72CHEVKT, Duncan&Son, Sameyrasmea72, THENEWMEXICAN, HotRod C/10, brianthelion02, Sport/Truck, ryanroo, michael bustamante, Dirt's72, Already Gone, WestButteTruck, 57taskforce, Moreyel, painterljp, AASmedic, SoCoC10, Lumaestas, carbuff382, Chevyland
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02-09-2020, 04:44 PM
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#5 |
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Registered User
Join Date: Jan 2016
Location: Barber City, CA
Posts: 4,795
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Re: Option Number G50
got a C20 longhorn with G60 back home and another C20 longhorn and K20 suburban here both with G50..
after the rain stops I can go out and count spring leafs on the longhorn but the burb is lifted so unreliable for factory reference.. good luck!
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I started out with nothing - and I still have most of it |
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02-09-2020, 06:45 PM
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#6 |
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All about them K’s
Join Date: Jun 2014
Location: Land of Entrapment
Posts: 6,451
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Re: Option Number G50
My K20 has the heavy rear spring option on the spid. No clue if the springs on it are oe still but it’s got 6 leaves. Sorry the damn thing is rotated.
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Tyler '57 3100 http://67-72chevytrucks.com/vboard/s...d.php?t=813888 '72 K20 Cheyenne: 5” lift, 35’s, front dana 60 blah blah blah… http://67-72chevytrucks.com/vboard/s...d.php?t=662879 ‘69 K10 SWB: 4” lift 33”s… in a million pieces http://67-72chevytrucks.com/vboard/s...d.php?t=805206 '98 Silverado LT K2500HD ECLB Vortec 454/4l80E: 6" lift 35x12.5x20’s Last edited by 57taskforce; 02-09-2020 at 06:52 PM. |
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02-09-2020, 09:18 PM
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#7 |
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Who Changed This?
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,609
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Re: Option Number G50
My C/20 truck has option G50 Heavy Rear Spring, with 6 leaves.
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~Steven '70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper Simi Valley, CA |
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02-09-2020, 11:19 PM
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#8 |
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Senior Member
Join Date: Aug 2011
Location: Reno, Nv.
Posts: 1,437
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Re: Option Number G50
72' gmc K2500
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1927 Willy's Knight 24,000 original miles, 1958 Impala 283/Powerglide, 1971 Monte Carlo 350/350, 1972 GMC K2500 350/350, 1976 Chev. K10 350/350, 2006 GMC Sierra 2500HD LBZ Duramax/Allison, 2006 Chev. Silverado K3500 LBZ Duramax/Allison |
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02-10-2020, 06:28 PM
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#9 |
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Senior Member
Join Date: May 2016
Location: Escondido CA
Posts: 573
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Re: Option Number G50
My K20 has six leafs on the rear.
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02-12-2020, 05:51 PM
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#10 |
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Senior Member
Join Date: Aug 2013
Location: Northern Santa Barbara County, California
Posts: 2,702
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Re: Option Number G50
Mine has both G50 and G60 options but the PO took the aux springs off, it has a coil spring Dana 60.
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02-12-2020, 10:47 PM
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#11 |
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Senior Member
Join Date: Aug 2013
Location: Northern Santa Barbara County, California
Posts: 2,702
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Re: Option Number G50
I thought I had a picture on my phone of my K20 springs, that truck doesn't have a SPID.
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