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Old 01-02-2005, 02:27 PM   #1
69_hafton
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Factory Tach Instrument Cluster

I keep seeing these instrument clusters with the factory tach pop up on eBay and various places, but after thinking about it over a period of time realized that these likely only work for 8 cylinder engines.

I'm just guessing, but most test instruments that read rpms have a setting for 4 & 8 cylinders or 6 cylinders. Does this mean the factory tach doesn't read accurately with the 6 cylinder? Anyone know if there was a factory tach specifically for the L6's?

I tried the search, but it doesn't recognise the search terms "6", "L6", "six", "250", "292", or anything with 3 letters or less. From now on, I'll start using "inline" or "six-cylinder" to make searching easier.
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Old 01-02-2005, 02:38 PM   #2
Longhorn Man
its all about the +6 inches
 
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they are adjustable
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Old 01-02-2005, 02:44 PM   #3
special-K
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Probably does matter(#of cyls)since the tach just counts the shots from thr coil.You`d read -25% with a 8cyl.tach.I believe they would have had a tach available for I-6s,though.Plenty were made,still.Good question.If GM didn`t offer then,couldn`t you change markings to read for a 6?
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Old 01-02-2005, 02:46 PM   #4
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I type slow.Thanks for clearing that up Mr.LonghornMan.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed"

GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project)
GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling)
Tim

"Don't call me a redneck. I'm a rough cut country gentleman"

R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~
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