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75C10 · 10-11-2017, 06:53 PM

70K10Hunter
The first picture shown by mongcanfly is correct for your truck as it has a mech oil pressure gauge. 78 and 79 tachs looked the same except they had a redline marked and were electric oil pressure. The 80 and newer tachs were orange needles and different font / colour. The tach, gas gauge and clock combo's are nice but not GM made. I think there is somebody that can modify your 4000 rpm big truck tach to a 5 or 6 or 7 k tach. For a small fee.
I just put a tach in my 86 and removed the clock. I must admit I miss the clock.

10-11-2017, 06:53 PM	#11
75C10 Registered User Join Date: Oct 2014 Location: Calgary Alberta Posts: 160	Re: Gauge cluster Pics 70K10Hunter The first picture shown by mongcanfly is correct for your truck as it has a mech oil pressure gauge. 78 and 79 tachs looked the same except they had a redline marked and were electric oil pressure. The 80 and newer tachs were orange needles and different font / colour. The tach, gas gauge and clock combo's are nice but not GM made. I think there is somebody that can modify your 4000 rpm big truck tach to a 5 or 6 or 7 k tach. For a small fee. I just put a tach in my 86 and removed the clock. I must admit I miss the clock.