motor swap went well.This body I put a v6 in had a v8.The tach is peged out on start up.I have no idea if it worked before cause I never sean it run.How can I check to see what it is?I moved everything from the v6 firebird to the v8 camaro.car starts and runs fine so far.

 

I have a 90-92 firebird tach. I will trade you ? the resisters are different in the tachs.

 

https://www.thirdgen.org/forums/elec...meter-fix.html


An 8 cylinder engine produces 4 pulses per revolution.

A 6 cylinder engine produces 3 pulses per revolution.

A 4 cylinder engine produces 2 pulses per revolution.

your tach should be working if wired correctly but inaccurate.

http://www.austinthirdgen.org/index.php?pid=19

 

how hard are they to get to.I found out why my dash lights were staying on.It was the headlight switch is loose.The tach was showing peged as soon as I hooked the batt. up.When motor was running it stayed that way.It's not just reading high or low it's max out.Is that still the cure?

 

There should be a white wire on the dist coil that wire feeds the ip tach input. The tach should have a lower than actual reading.

 

Did you ever get this sorted out ?

 

no,got the car running fair.still has some bad gas to work out of it.I understand that it would read off but should work some.It comes down when shut off I think but pegs out on start up.this motor tran ecm harness all worked fine before I pulled them out of the red firebird.My best guess is the tach gauge is not working properly.The gas gauge reads quarter tank when empty I think too.may try changing the tach when I get the dash out of the bird.I can use the resister out of the bird too.