IN 81-87 Chevy GMC Tach Cluster 4k Diesel - The 1947 - Present Chevrolet & GMC Truck Message Board Network

**Dave** · 09-21-2013, 10:04 PM

Nice 4000 rpm tach for 81-87 Chevy GMC truck equipped with a diesel. This will also work for a gas engine too. Cluster has no broken tabs and the printed circuit is good. 100 lb oil gauge. The instrument case in the lower left hand corner has a provision for a clock, air pressure or vacuum gauge (only on gas engines). Lens has minor scratches, otherwise good. Tach harness is mostly complete, brown wire goes to the distributor. Ask any question, thanks.

**too much stuff** · 09-21-2013, 10:29 PM

Price?

wahl4m · 09-22-2013, 01:17 AM

interested in this BUT how does the tach work off a dist with a diesel ? need a price !thanks mike

devinder8788 · 09-22-2013, 05:16 AM

very interested whats the price?

Quote:

Originally Posted by Dave

Nice 4000 rpm tach for 81-87 Chevy GMC truck equipped with a diesel. This will also work for a gas engine too. Cluster has no broken tabs and the printed circuit is good. 100 lb oil gauge. The instrument case in the lower left hand corner has a provision for a clock, air pressure or vacuum gauge (only on gas engines). Lens has minor scratches, otherwise good. Tach harness is mostly complete, brown wire goes to the distributor. Ask any question, thanks.

**Dave** · 09-22-2013, 08:06 AM

Quote:

Originally Posted by too much stuff

Price?

Quote:

Originally Posted by wahl4m

interested in this BUT how does the tach work off a dist with a diesel ? need a price !thanks mike

Quote:

Originally Posted by devinder8788

very interested whats the price?

Too much stuff, my bad, price is 180.00 shipped CONUS.

Wahl4m, the brown wire was in the main loom under the dash with a diesel. I cut on the other side of the connector, so you would have both male and female.

Devinder8788, price is now listed above, thanks.

wahl4m · 09-22-2013, 08:40 AM

private pm coming

**too much stuff** · 09-22-2013, 10:30 AM

Good price, but passing to the next in line.

**Dave** · 09-22-2013, 11:15 AM

Quote:

Originally Posted by too much stuff

Good price, but passing to the next in line.

Too much stuff, no problem. Thanks Dave.

**Dave** · 09-22-2013, 05:45 PM

Still for sale.

ray_mcavoy · 09-22-2013, 10:05 PM

Quote:

Originally Posted by wahl4m

... BUT how does the tach work off a dist with a diesel ?

They used a magnetic pickup at the flywheel. Here are some scans of an old Chevy service bulletin showing how these tachometers are calibrated for various engine/flywheel/trans combinations:

**Dave** · 09-22-2013, 10:15 PM

Ray, thanks for the info, this is useful.

wahl4m · 09-22-2013, 11:54 PM

ill take it but sounds like it fits a 8,2 not a 6.2 or 6.5 diesel ? whatca think ??

**Dave** · 09-23-2013, 06:15 AM

Quote:

Originally Posted by wahl4m

ill take it but sounds like it fits a 8,2 not a 6.2 or 6.5 diesel ? whatca think ??

There wasn't any jumper on the back. I think the engine was a Cummings.

**Dave** · 09-26-2013, 06:58 PM

Still for sale. I tested the tach with a 12 volt supply and the tach needle goes to zero as it should. This item will work with a diesel or gas engine with the correct aftermarket interface. LMK thanks Dave.

**Dave** · 09-28-2013, 09:44 AM

New price, 150.00. shipped. Lmk, thx Dave.
Posted via Mobile Device

travis401 · 10-05-2013, 10:33 PM

done and done

**Dave** · 10-06-2013, 02:39 PM

Sold to Travis401 thanks Dave.

09-21-2013, 10:04 PM	#1
Dave DND Trucks Join Date: Dec 1999 Location: NW Indiana Posts: 2,397	81-87 Chevy GMC Tach Cluster 4k Diesel Nice 4000 rpm tach for 81-87 Chevy GMC truck equipped with a diesel. This will also work for a gas engine too. Cluster has no broken tabs and the printed circuit is good. 100 lb oil gauge. The instrument case in the lower left hand corner has a provision for a clock, air pressure or vacuum gauge (only on gas engines). Lens has minor scratches, otherwise good. Tach harness is mostly complete, brown wire goes to the distributor. Ask any question, thanks. Attached Images

09-21-2013, 10:29 PM	#2
too much stuff Roadtrip! Join Date: Feb 2003 Location: Grand Rapids MN Posts: 13,787	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel Price? __________________ 67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto

09-22-2013, 01:17 AM	#3
wahl4m Registered User Join Date: Jan 2002 Location: norwalk,iowa,usa Posts: 921	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel interested in this BUT how does the tach work off a dist with a diesel ? need a price !thanks mike

09-22-2013, 08:40 AM	#6
wahl4m Registered User Join Date: Jan 2002 Location: norwalk,iowa,usa Posts: 921	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel private pm coming

09-22-2013, 10:30 AM	#7
too much stuff Roadtrip! Join Date: Feb 2003 Location: Grand Rapids MN Posts: 13,787	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel Good price, but passing to the next in line. __________________ 67 gmc custom lwb dakota truck. Sold...And bought back 69 swb 4x4 project (in progress) 70 c-10 lwb texas truck 70 4x4/BB/bkts/posi/tach(retired) 70 swb (wifes) 70 jimmy camper 71 K-5 factory 2wd 71 cheyenne 4x4/tach/posi/ plow rig 71 Cheyenne20 BB, buckets, tach, tilt, 4 speed 72 jimmy CST wyoming rig 72 jimmy Colorado rig 72 lifted texas 4x4 3/4 ton burb 65 fury conv. 383/auto 65 chrysler 300 "L" 413 auto

09-22-2013, 05:45 PM	#9
Dave DND Trucks Join Date: Dec 1999 Location: NW Indiana Posts: 2,397	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel Still for sale.

09-22-2013, 10:15 PM	#11
Dave DND Trucks Join Date: Dec 1999 Location: NW Indiana Posts: 2,397	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel Ray, thanks for the info, this is useful. Last edited by Dave; 09-22-2013 at 10:44 PM.

09-22-2013, 11:54 PM	#12
wahl4m Registered User Join Date: Jan 2002 Location: norwalk,iowa,usa Posts: 921	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel ill take it but sounds like it fits a 8,2 not a 6.2 or 6.5 diesel ? whatca think ??

09-26-2013, 06:58 PM	#14
Dave DND Trucks Join Date: Dec 1999 Location: NW Indiana Posts: 2,397	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel Still for sale. I tested the tach with a 12 volt supply and the tach needle goes to zero as it should. This item will work with a diesel or gas engine with the correct aftermarket interface. LMK thanks Dave.

09-28-2013, 09:44 AM	#15
Dave DND Trucks Join Date: Dec 1999 Location: NW Indiana Posts: 2,397	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel New price, 150.00. shipped. Lmk, thx Dave. Posted via Mobile Device

10-05-2013, 10:33 PM	#16
travis401 Registered User Join Date: Aug 2009 Location: Fort Worth, Tx Posts: 62	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel done and done

10-06-2013, 02:39 PM	#17
Dave DND Trucks Join Date: Dec 1999 Location: NW Indiana Posts: 2,397	Re: 81-87 Chevy GMC Tach Cluster 4k Diesel Sold to Travis401 thanks Dave.

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