K20 spring options, G50 F60 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**JEM Motorworks** · 12-24-2022, 03:24 PM

I bought a 1971 K20 and have been doing some armchair research on the SPID. My question is did all the k20’s come with a RPO of F60 & G50 to make them the 3/4 ton suspension. Or was this an upgraded suspension from base K20’s.
Merry Christmas
Happy Holidays

**57taskforce** · 12-25-2022, 12:46 AM

Those are upgrades over the base K20 equipment.
Merry Christmas to you as well!
That’s pretty nice looking spid, any more pictures of the truck?

best view · 12-25-2022, 10:02 AM

Welcome to the k20 club

**JEM Motorworks** · 12-25-2022, 08:48 PM

Thanks! It’s the first k20 I’ve owned, it’s a nice truck. No rust, has had a incorrect repaint, and square body filler doors added for the auxiliary fuel tanks. I’m going to correct those items and put correct looking wheels with caps on.
I’m just trying to figure some of the spid items out. It seems like the heavy springs where an option but didn’t increase GVW? The other option that puzzles me is the locking hubs, shouldn’t that be standard with a K series truck? That’s why I ask about the springs, if the step up to a k20 automatically put down the G50 & F60 options over k10.

best view · 12-25-2022, 09:27 PM

Yours didn’t come with hubcaps and locking hubs was a option a lot of people added them like on mine u also have the correct mirrors nice truck

roger0080 · 01-01-2023, 01:17 PM

Someone had swapped the bench seat for the bucket & console, otherwise A50 would be shown on the SPID.

And you got a No Spin too (bonus in my book), if its still in there more so if you are in the county as it looks.

GVWR is a combination of tires & rear springs. As 57TaskForce says.

Nice solid truck there.

If you haven't already, refer to https://www.gm.com/content/dam/compa...olet-Truck.pdf

**DeadheadNM** · 01-01-2023, 02:47 PM

Nice. Maybe an early 71 with OE red hub dials? All the RPOs to qualify for a Custom Camper name plate.

12-24-2022, 03:24 PM	#1
JEM Motorworks Junior Member Join Date: Jul 2014 Location: Loveland CO Posts: 68	K20 spring options, G50 F60 I bought a 1971 K20 and have been doing some armchair research on the SPID. My question is did all the k20’s come with a RPO of F60 & G50 to make them the 3/4 ton suspension. Or was this an upgraded suspension from base K20’s. Merry Christmas Happy Holidays Attached Images

12-25-2022, 12:46 AM	#2
57taskforce All about them K’s Join Date: Jun 2014 Location: Land of Entrapment Posts: 6,512	Re: K20 spring options, G50 F60 Those are upgrades over the base K20 equipment. Merry Christmas to you as well! That’s pretty nice looking spid, any more pictures of the truck? __________________ 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

12-25-2022, 10:02 AM	#3
best view Registered User Join Date: Apr 2009 Location: newbury new hampsire Posts: 2,167	Re: K20 spring options, G50 F60 Welcome to the k20 club

12-25-2022, 08:48 PM	#4
JEM Motorworks Junior Member Join Date: Jul 2014 Location: Loveland CO Posts: 68	Re: K20 spring options, G50 F60 Thanks! It’s the first k20 I’ve owned, it’s a nice truck. No rust, has had a incorrect repaint, and square body filler doors added for the auxiliary fuel tanks. I’m going to correct those items and put correct looking wheels with caps on. I’m just trying to figure some of the spid items out. It seems like the heavy springs where an option but didn’t increase GVW? The other option that puzzles me is the locking hubs, shouldn’t that be standard with a K series truck? That’s why I ask about the springs, if the step up to a k20 automatically put down the G50 & F60 options over k10. Attached Images

12-25-2022, 09:27 PM	#5
best view Registered User Join Date: Apr 2009 Location: newbury new hampsire Posts: 2,167	Re: K20 spring options, G50 F60 Yours didn’t come with hubcaps and locking hubs was a option a lot of people added them like on mine u also have the correct mirrors nice truck

01-01-2023, 01:17 PM	#6
roger0080 Registered User Join Date: Nov 2000 Location: Carver County, Minnesota, USA Posts: 626	Re: K20 spring options, G50 F60 Someone had swapped the bench seat for the bucket & console, otherwise A50 would be shown on the SPID. And you got a No Spin too (bonus in my book), if its still in there more so if you are in the county as it looks. GVWR is a combination of tires & rear springs. As 57TaskForce says. Nice solid truck there. If you haven't already, refer to https://www.gm.com/content/dam/compa...olet-Truck.pdf __________________ 72 Chev C-10 90% restored (former AZ truck) ... 71 Chev K-20 Cheyenne my vacation crusier... 72 Chev C-10 Now retired and striped after many faithful miles... 72 GMC 1500 Retired to the junk yard after bought new in '71...

01-01-2023, 02:47 PM	#7
DeadheadNM Carpe manana Join Date: Dec 2010 Location: Eau Claire, WI Posts: 12,451	Re: K20 spring options, G50 F60 Nice. Maybe an early 71 with OE red hub dials? All the RPOs to qualify for a Custom Camper name plate. __________________ 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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