Jugador1

what would be involved if i desired to switch to a 140 mph gauge cluster (on a 93 lx if it matters)

Jugador1

come on, i know someone knows or has done this</P>

BLKSTANG9879

I think you just gotta swap it out. ANd it will work fine. I'm almost 100% positive on that.

TheGmKiller331

I think you need the correct speedo gear as well.you can also have the 85mph speedo recalibrated to whatever you want.</P>


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Jugador1

rad, thanks, cause now that i think about it, a gt would have different gearing than me. wait...i dunno what gears i have...crap...lol. im guessing theyre the stock ones

jt351

Gearing has absolutely nothing to do with the speedometer, the gear in the tranny corresponds to the gearing and tire sizing, All speedometers are calibrated exactly the same, You could take a speedo out of a 84 escort and it would be accurate. But you can't swap the whole cluster from V8, but if you take the 6 or so outer screws out and change just the speedo head will work. Reasons why the V8 cluster will not work 1. v8 has a variable oil sender, 4cyl has fake oil indicator, meaning any oil pressure reads half,2. Also the tach will be exactly 1/2 off. Possible donors are 90-93 gt and V8 lx's, 87-89 cluster won't come close to fitting so don't bother.

grabbem88

i swapped out mine its off 3to5 miles,but i can live with that. just swap one for one. remember the screws behind it hard to get to

Jugador1

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how would the tach be off? my logic says it would just show more rpms and the yellow and redlines would be off, but i dont see how the needle would be showing the wrong rpm</P><edited><editID>Jugador</editID><editDate>38002.9198958333</editDate></edited>

jt351

A tach is specific for a 4,6,and 8 cyl. If you put a 4cyl tach in a v8 it reads double the rpm, Ihave done plenty of 4cyl-&gt;8cyl swaps and they read 6,000 by actual 3000, it neat when you can bury the tach needle during normal driving. You see a tach gets it signal from the coil, which fires every cylinder, with a 4cyl it fires 4 times in one revolution, and a 8 cyl fires 8 times in one revoultion, the early mustangs from 79-86 actually had a turn dial switch on the back of the tach to adjust 4,6,or 8.new ones past 87 don't tho. But if you use a timing light with a tach they are always right because you clip it on #1 cyl so no matter how many cylinders in one revolution #1 only fires ounce. hope this explains everything. But i got a better idea get a wrecked donor v8 car transfer the dash and the V8 all will be good then<IMG src=smileys/smiley4.gif border="0">

Jugador1

then how is it aftermarket tachs work but arent specific for types of engines? its got a monster tach dealy and its right on with the stock one. </P>


someone has to havedone this with an 85mph...why does nobody know if it will work or exactly how</P>