Thread: diesel swap
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Old 09-21-2011, 01:24 AM   #20
1973GMC_1500
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Join Date: Jan 2010
Location: Oran, IA
Posts: 78
Re: diesel swap

Quote:
Originally Posted by BigRed76 View Post
I know that in the 80's you could get a 6.2 in a half ton from the factory. Not sure if they had some stronger springs in the front. A 6.2 will fit fine because it is a factory motor. You will basically need the entire underhood wiring harness for the 6.2. And I'm sure the fuel lines are different too.
Actually, fuel lines are the same for the mechanical pump. Depending on your fuel filter setup on the 6.2, you may not have to change anything (I didn't when I went from 6.2 to 350 in my 87, currently going back to 6.2).

Wiring is the same for starter, alternator, and you could probly make the oil and temp gages work with the gassers wiring. All a 6.2 needs to run (besides glow plugs) is one key on 12V wire to the injection pump. Glow plugs are easy enough to wire yourself, by using a pre-85 relay and manual pushbutton.
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'87 GMC K2500 Factory 6.2 Diesel, 4 speed. Converted to 350 (has cracked block) converting back to 6.2
'82 [COLOR="Sienna"]Cadillac Coupe Deville 350 DIESEL
'93 Chev S10 2.8L 5 speed
'98 GMC K1500 Z71 ext cab shortbox 6.5 DIESEL
'96 Ford F250 7.3 Powerstroke
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