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03-30-2005, 07:01 PM
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#1 |
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No,I DON'T have Tourett's
Join Date: Mar 2005
Location: Reno, NV
Posts: 556
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HEI and stock tach
What a great website, eh? I installed HEI on my 350 and now the factory tach is inaccurate. Any ideas?
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03-30-2005, 07:08 PM
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#2 |
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The LuvShack Garage
Join Date: Jan 2004
Location: Maple Grove, TN (West Side)
Posts: 30,470
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NOT A HEI GUY, BUT
 2 THE BOARD FROM WEST 10-UH-C 
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Owner/Op: "TN Classic Transport Carriers" The Toy: "Square Vette" 72 Hybrid Blazer Toy Barn: "LuvShack" 40 x 60 x 20 Shop Big Piggy: "Goliath" 07 Kodiak C4500 Lil Piggy:"Maddy" 88 Silverado 3500 Hauler: "Feathers" 14 Aluma 8218T |
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03-30-2005, 07:10 PM
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#3 |
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No,I DON'T have Tourett's
Join Date: Mar 2005
Location: Reno, NV
Posts: 556
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thank you
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03-30-2005, 07:50 PM
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#4 |
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Account Suspended
Join Date: Sep 2000
Posts: 4,002
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Welcome from Canada eh
I will move this to the main 67-72 board, it will likely get more responses there. |
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03-30-2005, 08:44 PM
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#5 |
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Registered User
Join Date: Mar 2004
Location: Sacramento, CA
Posts: 1,084
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I read some posts (sorry, don't remember who/what/where) over on the CK5 board that talked about this issue. From the posts, seems the stock tach was never accurate above 4k anyway and once you hook up an HEI it's even worse. I haven't come across any posts on this site though.
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'71  Jimmy, 350, SM465, NP205, 2in Tuff Country lift, 33s on rallies, TBI, softtop and hardtop"If life was fair you'd be able to afford one of each and a garage large enough to house them all." |
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03-30-2005, 09:33 PM
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#6 |
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Questionable
Join Date: Mar 2005
Location: Atlanta
Posts: 13,376
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Funny, I don't have a factory tach, but i just fixed my speedo in my truck and the damned speedo seems like it's not accurate over 4k
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If I've got anything up for grabs, it'll be here: 7-hole gauge cluster for a 67-72 p/u FREE (link) I can't check the forum daily. If I don't reply to you within 24 hours, drop me a PM! I'm (hopefully) still alive and will reply faster to a PM. |
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03-30-2005, 11:55 PM
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#7 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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The tach should work fine on either type of distributor. It is just an 35 year old tach that was never acurate to begin with.
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Linear Mode
