ADRIAN1

should i get a 8 rpm tach or a 10 rpm tach?
where do most 289 redline at?

EmperorOfChicken

gunna stop pulling at about 5000 rpm, 8k is PLENTY with mods you might redline some where in 6k.

JamesW

That's like asking do I need a 160 or 200 mph speedometer.....

It really doesn't matter....

Colorado_Mustang

Most idle at 800 rpm or so and top out somewhere before 6000 rpm. Therefore, a 10 rpm tach would be way too low. Best would be an 8000 rpm tach.

atomsk680

unless you like the high RPM's, i bought a 8k and cant wait to install it

groho

speaking of tachs, how does the dash pod look on the 64-66, or do you prefer just mounting it on the steering column?

Colorado_Mustang

Get the factory looking pack on the steering column.

65mojoe

when i first got my tach, i asked the same question. There are a couple reasons why I went with the 8k tach:

1) even with a pretty heavily modded 289, you're not going to spin anything above 7k (and even thats optimistic)

2) if you've ever seen a car with a 10k tach on it that can't even spin close to that amount, you'll notice that the movement is almost unnoticeable (i.e. during normal driving between 1500-3000 rpm, the needle is SOO low on the tach face, that it just looks retarded)

As far as mounting the tach, I would discourage mounting it directly to the dash pad unless you fabricate some sort of metal bracket for it to seat on. Drilling into the foam padding will, overtime, make the pad warp and/or crack. I've seen some slick setups were the tack is mounted, centered on the tranny hump just underneath the ash/coin tray.

MidNite27

^if u can get ur motor over 8k rpm's, you should be able to afford a new tach later down the road. Just go with 8

Bulldog66

I sooo want a rally pack, however, at 4-500 bucks, I just can't bring myself to get it.... yet. Maybe after all my other projects are done.