LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Mallory 685 Problems

Thread Tools
 
Search this Thread
 
Old Feb 23, 2013 | 10:53 AM
  #1  
F0x Slaughter's Avatar
Thread Starter
TECH Fanatic
 
Joined: Sep 2010
Posts: 1,037
Likes: 2
Default Mallory 685 Problems

Well I couldn't get the car to start with the box hooked up. (Partly dead battery)
So I bypassed it with the loop connector.
Car started up.
Shut it off, hooked the box back up.
Starts up, let it run for like 30 seconds and the RPM next dropped from ~2000.
So I shut it off, tried playing with the Start Retard Timing. Had it set to 5*.
Changed it to .1*, tried cranking. Wouldn't go then boom backfire in the manifold.

I looped the connector and it started right up.
So obviously its something with the box.

Anyone know what the settings should be?

Last edited by F0x Slaughter; Feb 23, 2013 at 11:04 AM.
Reply
Old Feb 23, 2013 | 11:13 AM
  #2  
F0x Slaughter's Avatar
Thread Starter
TECH Fanatic
 
Joined: Sep 2010
Posts: 1,037
Likes: 2
Default

Searching around has seemed to yield people having problems. Such as the car not starting. I got mine to start just not idle right.

I'm going to move the start retard higher to like 6.5 and see what happens.
Reply
Old Feb 23, 2013 | 12:00 PM
  #3  
Ed Wright's Avatar
9-Second Club
iTrader: (1)
 
Joined: Feb 2002
Posts: 3,397
Likes: 9
From: Tulsa, OK
Default

I would not use anything Mallory. Too many reliability issues.
Reply
Old Feb 23, 2013 | 01:09 PM
  #4  
F0x Slaughter's Avatar
Thread Starter
TECH Fanatic
 
Joined: Sep 2010
Posts: 1,037
Likes: 2
Default

Well haha late on that.

I removed the grounds and power from under the hood and wire wheels all the bolts, and nuts and ring connectors. Put her back together and she starts right up with the box hooked up, even on the .1* degree setting. Still idles high but hoping thats because its cold. (Its in the garage don't want to let it warm up in there).
Reply




All times are GMT -5. The time now is 05:23 AM.

story-0
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-1
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-2
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-3
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-4
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-5
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
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE