1971 LT-1 Tachometer

[Mark Chance]

Can anyone tell me where the redline should be on a 1971 LT-1 Tachometer? I'm considering purchasing a car online and the picture of the tach has the redline at 6300. Does this seem correct for the car?

Thanks,
Mark

[Robert E.]

Re: 1971 LT-1 Tachometer

The redline is 6500.

[Mark Chance]

Re: 1971 LT-1 Tachometer

Bob,

The yellow band starts at 6300 and goes to 7000. I can't quite see a red line. Does this sound correct for a 71 LT-1?

Thanks,
Mark

[Duke W.]

Re: 1971 LT-1 Tachometer

Tachometers for mechanical lifter engines going back to at least '63 carry the following color coding.

Yellow zone: 6300-6500
Red zone: 6500-7000

Fading can make the color change at 6500 hard to discern,

I'll leave it to owners of '71-'72 "low compression" LT-1s to confirm, but I thought I heard that the 9:1 compression LT-1s may have carried a lower redline tach than the 11:1 CR version of 1970.

Duke

[Paul O.]

Re: 1971 LT-1 Tachometer

Duke's yellow/red zones correct for 71 LT-1. Paul

[Mark Chance]

Re: 1971 LT-1 Tachometer

Duke / Paul,

Thank you very much. I looked closer at the picture and saw the yellow/red split at 6500 as you indicated. I sincerely appreciate the help.

Mark

[Charlie P.]

Re: 1971 LT-1 Tachometer

This talk about tachs made me wonder- if the yellow line starts at 6300, and means you should watch out because you're about to hit the red line, and if go to the red line at 6500, haven't you now reached the point where you could blow the engine up? So what if you continue on to 6750? You could REALLY blow it up? And on to 7000- you could REALLY REALLY blow it up? Shouldn't it be a red point? Just wondering.........

[Patrick H.]

Re: 1971 LT-1 Tachometer

Like your 71 ever gets above 3000 rpm???

PH

[Charlie P.]

Re: 1971 LT-1 Tachometer

ONLY gonna happen if I go for PV

[Dave S.]

"IF" you go for a PV ?You mean when,right? *NM*

[Charlie P.]

Oh, Yeah, Dave, a Freudian slip

Radio is in and working. Speakers were bad, so the whole dash had to come out. 90% back together, so I will find out what I left un-hooked when I start it up.