how fast do you guys go idk how to phrase this but i just feel at 55 this thing is wound out is it safe to go any higher im not an idiot just not used to the 6.2 and dont want to push its limits .. has any one hooked up a tach on the 6.2 ill have more questions im sure bare with me the 6.2 is new to me thanks

 

What running gear is in the truck??? and what size tire do have????

 

6.2 sm465 np208 235-85-16

 

Rear gear ratio?

 

Bump. I am also curious on getting a tach on my 93 6.2L. I would assume there is a speed sensor somewhere feeding the ECM. I looked at some Stewart Warner Diesel tachs but not sure where the sending units would go and which type to use. I have a performance 1 wire Alt so that is not an option (and I am not clear on how that is accurate anyway). Any ideas/guidance would be great. Perhaps the info is in my shop manual...

or perhaps these are the answers:

https://www.dieselbombers.com/6-2l-6...-2-school.html
http://www.dieselplace.com/forum/63-...w-working.html

This is also interesting:

http://www.alligatorperformance.com/...el-p-4510.html

 

I suspect you will need to get a transducer style tach that clamps on an injection line and gets RPM by pulsation.
EG:
Design Technology, Inc., Home of Tiny-Tach - Installation Instructions for the Diesel Tiny-Tach

http://www.motherearthnews.com/green...#axzz2ZSogwI1N

 

Another Option perhaps:

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