Advantages of distributor advance methods - 460 Ford Forum
General Race Tech All other topics, such as Fuel Delivery, Ignition, Engine, Safety, Data Aquisition, Suspension, etc...

User Tag List

LinkBack Thread Tools Search this Thread Display Modes
post #1 of 3 (permalink) Old 04-25-2010, 09:36 PM Thread Starter
Junior Member
Join Date: Jan 2010
Posts: 18
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Advantages of distributor advance methods

Can someone please point me to somewhere that explains the benefits/different times to use the different types of distributors of a 460.

IE. Vac Advance, Mech Advance, Points Ect.

I am running an MSD 6AL with Blaster 2 coil on a Mild Comp Cam 460 motor and trying to make a determination of the best Distributor to choose.

Main Goals reliabilty and low end torque.

Thank You,
Reginald is offline  
Sponsored Links
post #2 of 3 (permalink) Old 04-25-2010, 10:19 PM
Senior Member
CarsByCarl's Avatar
Join Date: Jan 2006
Location: Colorado Springs, CO.
Posts: 5,481
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 186 Post(s)
Generally, vacume advance is needed (in addition to mechanical advance) when the engine will be operated under part throttle conditions. This is because the air/fuel will be less dense under part throttle and burn slower, requiring more advance to ignite at the right time.

If you're only running under full throttle, mechanical advance is all that's needed. No vacume under WOT, so vacume advance doesn't do anything. Mechanical advance still helps make starting easier and it'll run better around the pits, etc.

If you're only running under full throttle and it'll always be above ~3000 (like with a 4000 stall converter), you can lock out the advance and run a fixed amount of timing. Often a manual timing retard is installed to make starting easier.

Fastest street legal BBF on
Fastest AFR headed BBF on
Fastest street legal 2nd gen Montego GT on EARTH!
CarsByCarl is offline  
post #3 of 3 (permalink) Old 04-26-2010, 02:40 PM
Senior Member
Greenbroncoguy's Avatar
Join Date: Apr 2006
Location: Lakeland, Fl
Posts: 845
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 0 Post(s)
Send a message via Yahoo to Greenbroncoguy
So what if you plan on running a large cam, high compression engine w/ nitrous on the street? Would it just not make as much power under part-throttle, would it get markedly worse fuel economy or what?

Are there any downsides to running a vacume advance unit in the above application when the same rig is used during the hi-po part of its life, i.e - sledpulling?


- It needs more bottle...
Greenbroncoguy is offline  
Sponsored Links

Quick Reply

Register Now

In order to be able to post messages on the 460 Ford Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Please enter a password for your user account. Note that passwords are case-sensitive.


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:


Thread Tools Search this Thread
Show Printable Version Show Printable Version
Email this Page Email this Page
Search this Thread:

Advanced Search
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome