Tach is broken, what speed to shift?
04-14-2005, 04:15 PM
#1
Instructor
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Tach is broken, what speed to shift?
The Tach on my 1976 L-82 is broke, has an m-21, and I was wondering if anyone here knew what speed redline was for each gear. Thanks, Pat
04-14-2005, 04:45 PM
#2
Melting Slicks
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i hate to say it but there is no way for us to know what rpm each gear is without knowing the ratio for each gear in the transmission and the gearing of the rearend but if everything is stock im sure someone out there knows the specs and can tell you 
gl and my advise to you would be to get a new tach if you run the car to the red line like it sounds you saying.
gl and my advise to you would be to get a new tach if you run the car to the red line like it sounds you saying.
04-14-2005, 04:55 PM
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Drifting
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who ever really looks at the tach? Just kidding. I hardly ever do. I can just "feel" when she wants to shift. usually on a stock 350 she'll level off and not have much "go" to it at around 4-4.5k or so. But ultimately you'll need the rear gear for "mph" suggestions.
04-14-2005, 05:01 PM
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Melting Slicks
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St. Jude Contributor
Just listenin's great advice unless you're pushing it really hard, like it sounds like you want to do. I sure wouldn't depend on MPH to decide when I was hitting redline. Get a tach & some peace of mind--the kind you mount on the column are relatively easy to install and not really that expensive.
JB
JB
04-14-2005, 08:06 PM
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25, 55, 95, 140
Oh wait, that's my Lincoln!
Do what The others have said. Buy a cheap electronic tach an bolt it to your column. You'll have two hours (max) and $50 invested. The peace of mind is priceless.
Oh wait, that's my Lincoln!
Do what The others have said. Buy a cheap electronic tach an bolt it to your column. You'll have two hours (max) and $50 invested. The peace of mind is priceless.
04-15-2005, 10:37 AM
#8
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Originally Posted by crazydalys
Thanks for the advice guys, the rear end is either a 3:73 or 3:55, not sure which one. I'll have to buy the dash tach until I get mine fixed.
04-15-2005, 02:05 PM
#12
Drifting
Originally Posted by AGVI
is this a serious question? fix your tach!!!
04-15-2005, 09:21 PM
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Melting Slicks
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St. Jude Contributor
Well, if I understood right, he wasn't saying he didn't know when to shift under normal driving conditions, he was worried about redlines. I don't blame him for not wanting to trust instinct to tell him when to shift if he's contemplating pushing the car to its limits. Then again, I wouldn't be eyeballing no factory tach stuck back in the dash for that. You need an eye-level tach with a shift light if you're seriously pushing the redline, IMHO.
JB
JB
