Generation III External Engine LS1 | LS6 | Bolt-Ons | Intakes | Exhaust | Ignition | Accessories
Sponsored by:
Sponsored by:

SLOW tach

Thread Tools
 
Search this Thread
 
Old Apr 15, 2010 | 11:52 PM
  #1  
Raptor_WS6's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (23)
 
Joined: Feb 2008
Posts: 1,838
Likes: 0
From: Los Angeles, CA
Default SLOW tach

didnt know where to put it, mods move if necessary lol


is there a fix for the OEM TACH on how it reads so slow,

during my 1st and second gear when i get on it the tach doesn't seem to read as fast as the engine goes(verified with hp tuners)

limiter is set at 6800 1st and 2nd gear seem to hit it on the tach at around 6200/6400 respectively

is there a fix for this other than buying a hideous after market tach, or buying a shift light? is there something we can do to the tach itself to help it read more accurately



cam only car
Reply
Old Apr 16, 2010 | 06:25 AM
  #2  
Nitroused383's Avatar
9 Second Club
iTrader: (10)
 
Joined: Aug 2008
Posts: 2,817
Likes: 6
From: Washington
Default

Shift light hidden in the vent from Harlan. They are pretty cheap and easy to wire up. Factory tach is very slow.
Reply
Old Apr 16, 2010 | 02:48 PM
  #3  
Z28/2002's Avatar
11 Second Club
iTrader: (27)
 
Joined: May 2005
Posts: 6,799
Likes: 5
From: Your girl's back door giving her the long stroke while you're at work
Default

The only fix is an aftermarket tach or just get a shift light like mentioned above
Reply
Old Apr 16, 2010 | 03:23 PM
  #4  
brian_rs/ss's Avatar
TECH Addict
 
Joined: Mar 2009
Posts: 2,099
Likes: 3
From: Texas/Afghanistan
Default

nitrous.
Reply
Old Apr 16, 2010 | 04:18 PM
  #5  
Duffster's Avatar
11 Second Club
iTrader: (103)
 
Joined: Aug 2005
Posts: 2,633
Likes: 1
From: South of West Point Iowa
Default

Nitrous would have the wrong effect Brian. . . the engine would rev much faster and the needle would still be delayed.

http://www.youtube.com/watch?v=Y0tqa...eature=related
Reply
Old Apr 16, 2010 | 04:20 PM
  #6  
brian_rs/ss's Avatar
TECH Addict
 
Joined: Mar 2009
Posts: 2,099
Likes: 3
From: Texas/Afghanistan
Default

nah...you just need a bigger shot.
Reply
Old Apr 16, 2010 | 09:12 PM
  #7  
Raptor_WS6's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (23)
 
Joined: Feb 2008
Posts: 1,838
Likes: 0
From: Los Angeles, CA
Default

i hate how the aftermarket tach looks . im just going to have to get a light
Reply
Old Apr 17, 2010 | 07:12 AM
  #8  
allngn_c5's Avatar
TECH Senior Member
iTrader: (3)
 
Joined: Apr 2006
Posts: 6,524
Likes: 1
From: Western Burbs of Detroit
Default

I have to echo the shift light suggestion. Once my Raptor shift light was hooked up and set for my cue to shift I never had another issue with the rev limiter and the car feels quicker. Rev limiter set at 6800, shift light comes on at 6400. My slow shifting has shown shifts to be happening around 66xx rpms. So without the shift light my slow shifting was kissing the rev limiter. Get the shift light.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

 Brett Foote
story-1

Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

 Pouria Savadkouei
story-2

Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

 Verdad Gallardo
story-3

7 Most Reliable High-Performance Engines GM Has Ever Built

 Verdad Gallardo
story-4

Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

 Verdad Gallardo
story-5

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-6

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-7

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-8

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-9

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
Old Apr 20, 2010 | 11:25 PM
  #9  
Raptor_WS6's Avatar
Thread Starter
TECH Fanatic
15 Year Member
iTrader: (23)
 
Joined: Feb 2008
Posts: 1,838
Likes: 0
From: Los Angeles, CA
Default

where is a good one for a great price?
Reply
Old Apr 21, 2010 | 04:47 AM
  #10  
Nitroused383's Avatar
9 Second Club
iTrader: (10)
 
Joined: Aug 2008
Posts: 2,817
Likes: 6
From: Washington
Default

Like I said earlier the Harlan one is great, at $50 + $5 shipping it's a no brainer.

http://www.harlan-engineering.com/store/store.html
Reply




All times are GMT -5. The time now is 12:05 AM.

story-0
6 Gifts Neither Your Dad Nor Grad Will Shove Into the 'Trinket Drawer'

Don't get dad new socks or a grill brush this year.

By Brett Foote | 2026-06-04 18:13:20


VIEW MORE
story-1
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?

Slideshow: We take a close look at the ONE and Artidiag 800BT2 diagnostic tools from Topdon and the reasons to buy one over the other.

By Pouria Savadkouei | 2026-05-28 11:05:11


VIEW MORE
story-2
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine

Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.

By Verdad Gallardo | 2026-05-26 18:23:54


VIEW MORE
story-3
7 Most Reliable High-Performance Engines GM Has Ever Built

Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.

By Verdad Gallardo | 2026-05-21 16:45:27


VIEW MORE
story-4
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-5
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-6
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-7
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-8
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-9
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE