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- - 1979 k5 using parts from a 1986 k5 (https://67-72chevytrucks.com/vboard/showthread.php?t=831987)

1979k54x4

03-12-2022 05:57 PM

1979 k5 using parts from a 1986 k5

I have a 1979 k5
I'm wanting too know can I use the 4speed auto transmission and transfer case
And front dif and rear dif and the cluster dash .

Pontiac1976

03-12-2022 08:54 PM

Re: 1979 k5 using parts from a 1986 k5

You are changing pretty much the whole drive train so it should be fine but you will need drive shaft, shift indicator, trans cross mount and mounting bushing, then you have to see about e-brake system you would like to set up.( the bracket for the 84-87 cables). As for the Cluster if it has the same option as your it easier.
You will have to check the wiring plug for a few changes between 79 and 86. if the 79 did not come with gauges and the 86 did then there a lot more repining. If you look up cluster threads more info on this here.

66gmcguy

03-15-2022 11:27 AM

Re: 1979 k5 using parts from a 1986 k5

The gauge cluster will physically bolt up to the dash and the plug will also connect to it, but as mentioned above, I would definitely check the wiring. I fried the printed circuit trying to plug in the cluster from an 1973 truck to a 1980 truck. There are several wiring diagrams available for each year and they should show the pinouts for the gauge cluster.

hatzie

03-17-2022 07:56 PM

Re: 1979 k5 using parts from a 1986 k5

1978-1987 gauge clusters will interchange directly.
1973-75 & 1976-77 have some oddities.

Warning lamp cluster to gauge cluster will take some pinout modification.

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