AZ I REALLY need a tach circuit board for a 76-77 cluster! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**1774btcrew** · 09-23-2014, 02:38 PM

If anyone could help me out, I would really appreciate it. I have modified my cluster for aftermarket speedometer and tach. I have a 4l80e transmission and it requires and electric speedo. Doing this involves cutting an unused section out of the circuit board to clear the speedo. The GM part numbers that will work are either 8917776 for early 1976 and the late 76 - 77 one is #25015093. I have several tach clusters and the only one I have the correct year is MINT. I can't justify cutting up the circuit board but will do so if I absolutely have to. Trying to avoid ruining something really nice.

09-23-2014, 02:38 PM	#1
1774btcrew Senior Member Join Date: Jun 2009 Location: Phoenix AZ Posts: 4,603	I REALLY need a tach circuit board for a 76-77 cluster! If anyone could help me out, I would really appreciate it. I have modified my cluster for aftermarket speedometer and tach. I have a 4l80e transmission and it requires and electric speedo. Doing this involves cutting an unused section out of the circuit board to clear the speedo. The GM part numbers that will work are either 8917776 for early 1976 and the late 76 - 77 one is #25015093. I have several tach clusters and the only one I have the correct year is MINT. I can't justify cutting up the circuit board but will do so if I absolutely have to. Trying to avoid ruining something really nice. __________________ AZPartsLocators on Instagram 1972 Cheyenne Super Short Bed big block "Blackie" 1977 Crew Cab GMC Short bed with 4BT Intercooled Cummins Diesel and a 4L80e "The Junkyard Dog" 1985 Crew Cab Chevy dually with 5.9 Cummins "The Big Dog" This is what my dad liked to be called by the grandkids before he passed so it seems fitting for his old truck.



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