I NEED HELP BUYING A TACH...

6FIVE_STANG

New Member

Jul 2, 2006

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San Jose, CA

Jan 8, 2007

#1

• Jan 8, 2007

• #1

Ok, I know I want to buy the autometer sport comp monster tach but, I don't know if I should get, the 8 or 10 RPM tach? The reason I ask is because I dount want to get something that I can't even get close to reaching. I plan to have a pumped up 289 so my question is, where do most 289's top out(red line)?

 

6FIVE_STANG

New Member

Jul 2, 2006

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San Jose, CA

Jan 8, 2007

#2

• Jan 8, 2007

• #2

ANYONE??

 

iskwezm

10 Year Member

May 24, 2005

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Rowland Heights,California

Jan 8, 2007

#3

• Jan 8, 2007

• #3

it depends on your cam and its power range.Mine will spin 7800, but most might see 6500 or less. The 10K tach has more lines and might be harder to read.

 

6

65fast

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May 16, 2004

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6

Mt. Airy

Jan 8, 2007

#4

• Jan 8, 2007

• #4

You could get the 10,000 rpm tach, but your probably only going to make to 10,000 one time

 

BullittStangV8

Founding Member

Oct 5, 2002

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NJ

Jan 8, 2007

#5

• Jan 8, 2007

• #5

go with the lower 8K tach. There arnt too many (if any) pushrod ford motors that can spin anywhere near that. Even getting over 8K is crazy.

 

ga289stocker

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May 23, 2006

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Sugar Hill, Ga

Jan 8, 2007

#6

• Jan 8, 2007

• #6

+1 for the 8k tach, that would be plenty i'm sure, my stock headed 289 tops out at 5500 right now, I've got some 165 AFR's to go on and hopefully w/ new cam turn 6500 or so....

 

68FBJJZ109

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May 2, 2005

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Easton, PA

Jan 8, 2007

#7

• Jan 8, 2007

• #7

65fast said:

You could get the 10,000 rpm tach, but your probably only going to make to 10,000 one time

Click to expand...

Haha it would be cool to see.

 

BullittStangV8

Founding Member

Oct 5, 2002

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NJ

Jan 8, 2007

#8

• Jan 8, 2007

• #8

If you want I can take a pic. of mine tonight (8k sport comp 5inch moster tach. w. shiftlight.)?

 

6FIVE_STANG

New Member

Jul 2, 2006

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San Jose, CA

Jan 10, 2007

#9

• Jan 10, 2007

• #9

BullittStangV8 said:

If you want I can take a pic. of mine tonight (8k sport comp 5inch moster tach. w. shiftlight.)?

Click to expand...

YEAH THAT WOULD BE COOL!!

im planning to make a piece that will hold my tach on the bottom of my dash ( where the stereo is) instead of the top. what do you guys think?

 

M

mo'factor

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Jul 29, 2006

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6

Jan 10, 2007

#10

• Jan 10, 2007

• #10

10K

My dad built a '62 Chevy 327 that could reach the 10K mark, but it had a mallory ignition to keep the points from floating. It had the double hump heads that he had some work to keep the valves from floating. But unfortunatelythe rocker arm studs would work their way out as it ran. It seems 13:1 compression and 10,000 rpm are pretty tough on a motor. The moral of the story is that 10,000 K is reachable but will require mega-buck motors. If your engine is stock expect red line to be 5000-6000K range.

 

BullittStangV8

Founding Member

Oct 5, 2002

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NJ

Jan 10, 2007

#11

• Jan 10, 2007

• #11

Ill take the pic tom and post it. Sorry I didnt see your reply sooner. Mines mounted on the collumn.

 

65ShelbyClone

Founding Member

Sep 9, 2000

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Antelope Valley, SoCal

Jan 11, 2007

#12

• Jan 11, 2007

• #12

6FIVE_STANG said:

I plan to have a pumped up 289 so my question is, where do most 289's top out(red line)?

Click to expand...

Some people like to tell stories about how they beat the hell out of some over-carbed "budget" 289 and spun 8000, 9000, or even 10,000rpm on the stock rotating assembly, and iron heads on their way to mid 11s in a street Ford. All of those story pieces are plausible, but not together.

Truth is that you probably wouldn't want to drive a 289 that kept making power all the way to even 7000. In that case, you still wouldn't have maxed out an 8000 rpm tach.