how do i change an oem tach from 6 to 8 cyl?

[rednecks-10]

i got an oem gauge cluster off ebay with a tach. how do i tell if it is for a 4,6,or 8 cyl.and how can i change it.thx http://www.s10v8.com/images/smilies/icon_confused.gif

[Mike]

What year?

[fasrnur]

I would have to say it is probably from a V-6 truck. I don\'t recall seeing any 4 cyl trucks with a tach and of course unless it\'s a 2003 or newer Trail Blazer they never came with a

V-8.



Jeff.....

[rednecks-10]

not sure what year it is but im going to put it in a 84 and by the end of summer i hope to have a v-8 in it so i wanted to use the stock tach if i can figure out how to change it

[Mike]

i could tell you how if you could tell me what year the cluster is

[afghanimobilerawks]

i have the same question for mine, its going into an 85..... and if i remember correctly its form an 85, but i also got mine on ebay.

[rednecks-10]

ok its from an 85

[JayDee]

\"The Book\" explains this in very great detail.

Basically you need to solder on additional resistors.

[rednecks-10]

the book???????

[007Driver]

He is talking about the JTR V8 S10 conversion manual. Its \"THE BOOK\" http://www.s10v8.com/images/smilies/icon_smile.gif