Tach help! - The 1947 - Present Chevrolet & GMC Truck Message Board Network

DeputyDan · 03-20-2011, 10:41 AM

Ok so I got my old lady to approve me spending a few grand and rebuilding the enigne. I am now in parts mode trying to figure out what parts to buy but all the distributor lingo is over my head. I need a distributor that works with my original in dash tach. I have read some of the distributors won't work. Any suggestions on what distributor to use? Also is it vacum advance that I need as opposed to mechanical? Thanks guys you have been a great help!

oldblue1968chevy · 03-20-2011, 11:17 AM

My factory tach worked with my HEI dizzy (to test it) yeah you want vacumn advance

DeputyDan · 03-20-2011, 11:28 AM

Great! Do I need all the seperate stuff like an ignition box/coil and so forth or can an HEI simply hook to the stock ignition?

swamp rat · 03-20-2011, 11:39 AM

You could pull one out of a junk yard if you wanted that has the coil intigrated.

One thing you didn't say is if you have a 4X, there are 2 different enging positions regarding the placement of the motor mounts, on a 4X with a high hump center section of the floor the enging us higher up and rearward so you cant use a larger diameter hei, I had to use a Mallory unilite with an external coil.

03-20-2011, 10:41 AM	#1
DeputyDan Registered User Join Date: Oct 2010 Location: Missouri Posts: 165	Tach help! Ok so I got my old lady to approve me spending a few grand and rebuilding the enigne. I am now in parts mode trying to figure out what parts to buy but all the distributor lingo is over my head. I need a distributor that works with my original in dash tach. I have read some of the distributors won't work. Any suggestions on what distributor to use? Also is it vacum advance that I need as opposed to mechanical? Thanks guys you have been a great help!

03-20-2011, 11:17 AM	#2
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: Tach help! My factory tach worked with my HEI dizzy (to test it) yeah you want vacumn advance __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

03-20-2011, 11:28 AM	#3
DeputyDan Registered User Join Date: Oct 2010 Location: Missouri Posts: 165	Re: Tach help! Great! Do I need all the seperate stuff like an ignition box/coil and so forth or can an HEI simply hook to the stock ignition?

03-20-2011, 11:39 AM	#4
swamp rat Registered User Join Date: Oct 2007 Location: Spanaway Posts: 8,451	Re: Tach help! You could pull one out of a junk yard if you wanted that has the coil intigrated. One thing you didn't say is if you have a 4X, there are 2 different enging positions regarding the placement of the motor mounts, on a 4X with a high hump center section of the floor the enging us higher up and rearward so you cant use a larger diameter hei, I had to use a Mallory unilite with an external coil. __________________ Mike. Swamp Rat build thread : http://67-72chevytrucks.com/vboard/s...d.php?t=595019 72 3/4T 4X4 4" BDS Lift 33" BFG's



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