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Installing a tachometer #751365
August 07th 2019 1:47 am
August 07th 2019 1:47 am
Joined: Jul 2019
Posts: 40
Ohio
M
Mikeburkey Offline OP
newbie
Mikeburkey  Offline OP
newbie
M
Joined: Jul 2019
Posts: 40
Ohio
I have a Chevy g20 5.8 8cyl and I'm sure this can apply to more than just my engine. But I would like to install a tachometer so I can monitor my idle Rev and such. How would I go about that? Would I go off of a distributor or ignition coil? Thank you with any information you have for me.


Chevy Van G20 3/4 Ton 5.7 L 8 Cyl
Re: Installing a tachometer [Re: Mikeburkey] #751373
August 07th 2019 7:46 am
August 07th 2019 7:46 am
Joined: Oct 2015
Posts: 367
Beaufort, SC USA
NEmery Offline
enthusiast
NEmery  Offline
enthusiast
Joined: Oct 2015
Posts: 367
Beaufort, SC USA
what year is the van? the HEI distributor has a place to hook a tach lead to.

Re: Installing a tachometer [Re: NEmery] #751392
August 07th 2019 4:24 pm
August 07th 2019 4:24 pm
Joined: Jul 2019
Posts: 40
Ohio
M
Mikeburkey Offline OP
newbie
Mikeburkey  Offline OP
newbie
M
Joined: Jul 2019
Posts: 40
Ohio
It's a 94


Chevy Van G20 3/4 Ton 5.7 L 8 Cyl
Re: Installing a tachometer [Re: Mikeburkey] #751410
August 08th 2019 8:11 am
August 08th 2019 8:11 am
Joined: Oct 2015
Posts: 367
Beaufort, SC USA
NEmery Offline
enthusiast
NEmery  Offline
enthusiast
Joined: Oct 2015
Posts: 367
Beaufort, SC USA
Originally Posted by Mikeburkey
It's a 94

is there a pigtail with an unused wire coming off of the coil? I think that there generally is on a GM TBI with no factory tach. that would be the tach wire.

Re: Installing a tachometer [Re: NEmery] #751480
August 09th 2019 3:47 pm
August 09th 2019 3:47 pm
Joined: Jul 2019
Posts: 40
Ohio
M
Mikeburkey Offline OP
newbie
Mikeburkey  Offline OP
newbie
M
Joined: Jul 2019
Posts: 40
Ohio
Is the coil in the dog house does anyone know by chance?


Chevy Van G20 3/4 Ton 5.7 L 8 Cyl
Re: Installing a tachometer [Re: Mikeburkey] #751485
August 09th 2019 4:50 pm
August 09th 2019 4:50 pm
Joined: May 2018
Posts: 1,284
TN
Astrocreep66 Offline
old hand
Astrocreep66  Offline
old hand
Joined: May 2018
Posts: 1,284
TN
Yeah coil should be on top of intake right /passenger side.


When in doubt..get the sawzall out..
Re: Installing a tachometer [Re: Astrocreep66] #751530
August 11th 2019 12:18 pm
August 11th 2019 12:18 pm
Joined: Jul 2019
Posts: 40
Ohio
M
Mikeburkey Offline OP
newbie
Mikeburkey  Offline OP
newbie
M
Joined: Jul 2019
Posts: 40
Ohio
Alright thank you


Chevy Van G20 3/4 Ton 5.7 L 8 Cyl
Re: Installing a tachometer [Re: Mikeburkey] #761740
June 01st 2020 12:49 pm
June 01st 2020 12:49 pm
Joined: May 2010
Posts: 243
Spokane, WA USA
Vanther Offline
enthusiast
Vanther  Offline
enthusiast
Joined: May 2010
Posts: 243
Spokane, WA USA
thats exactly what I did on mine. Super easy. Same van, engine. Ill see if I can find a pic


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