Ford 390 c.i.d. Timing
Thread Starter
|
Freshman User
Joined: Oct 2006
Posts: 46
Likes: 0
Ford 390 c.i.d. Timing
Hello everyone and thanks to your previous replies. Now I am wondering what the timing specs would be for the ford 390 c.i.d. with a edelbrock # 1405 650cfm carb on it. I also have casting numbers for the intake if anyone would like to decode them. Thanks so much.
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Total mechanic advance should be in the 30° to 36°, even though 36° may cause you to ping on regular gas. Depending on you advance set up in you dist. (could be anywhere from 10° to 18° advance in the dist for 20° to 36° at the crank) , your initial could be any where from 0° to 16°. Factory is usually 6° to 10° depending on the engine.
Senior User
Joined: Dec 2005
Posts: 314
Likes: 0
From: North Carolina
I think I am lost on this stuff. How do you check the distributor advance? I know how to check it at full advance on the crank, but not sure about the other. My crank has a mark on it at 6. Was that my original setting? My distributor is a vacuum advance Fomoco unit with the Petronix conversion kit. Running MSD 6AL and Blaster Coil. I don't want to take someone else's thread so if offend anyone tell me and I'll start another one. 
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
Several ways to do it. Easiest is to check full mechanical advance (disconnect the vacuum). Now check initial. The difference is your total advance. The best way is to remove cap and rotor. Remove the reluctor, don't loose the roll pin that makes it turnwith the shaft. There are 2 screws holding down the plate the pick up is on. Remove screws and plate. See what advance curve you have. See the following link for infor and recurving your dist. Don't worry that it says 460. All the Ford dist.s are the same inside.
http://www.reincarnation-automotive....ons_index.html
http://www.reincarnation-automotive....ons_index.html
Senior User
Joined: Dec 2005
Posts: 314
Likes: 0
From: North Carolina
Originally Posted by mrwilson74
I always check my timing with and without the vacuum. I also check the curve as stated above. I traded in the old points and went with Pertronix and made all the timing much much more reliable and simple.
Trending Topics
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
The dist. has mechanicl advance built in to it, it is not optional. The vacuum is the optional advance. It is a mileage enhancing feature (even though some seem to think it a cheater system to get their engine to idle with a lot of advance).
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Ugly Ford Trucks That We Still Kinda Love
Joe Kucinski
10 Things Every Truck Owner NEEDS (2026 Edition)
Michael S. Palmer
Rezvani's Latest Post-Apocalyptic Monster Is a Ford F-150 Raptor Underneath
Verdad Gallardo
Top 10 Most Expensive Ford Trucks Ever Sold on Bring a Trailer
Joe Kucinski
2027 Ford Super Duty Buyer's Guide (Every Model, Engine, & Package)
Brett Foote
Top 10 Ford Truck Tragedies
Joe Kucinski
AEV FXL Super Duty - the Super Duty Raptor Ford Doesn't Make
Brett Foote
Lobo Vs Lobo: Proof the F-150 Lobo Should Be Even Lower!
Michael S. Palmer
Ford's 2001 Explorer Sportsman Concept Looks For a New Home
Verdad Gallardo
Senior User
Joined: Dec 2005
Posts: 314
Likes: 0
From: North Carolina
Originally Posted by Bear 45/70
The dist. has mechanicl advance built in to it, it is not optional. The vacuum is the optional advance. It is a mileage enhancing feature (even though some seem to think it a cheater system to get their engine to idle with a lot of advance).
Senior User
Joined: Dec 2005
Posts: 314
Likes: 0
From: North Carolina
Ok...Wasn't sure about all the details on a dizzy. We set the timing in my motor to between 8 and 10 on the initial timing and ran it down the road. Does much better in that range then at the 4 to 6 range (factory). Still need some more tuning but much better then before. Thanks for the help!!! 
FTE Sponsor
Joined: Aug 2006
Posts: 755
Likes: 0
Distributor
Originally Posted by feo_nuts
Hello everyone and thanks to your previous replies. Now I am wondering what the timing specs would be for the ford 390 c.i.d. with a edelbrock # 1405 650cfm carb on it. I also have casting numbers for the intake if anyone would like to decode them. Thanks so much.
If you decide to go with a new distributor, see our custom curved D.U.I.-Davis Unified Ignition and Duraspark distributors at:
http://www.performancedistributors.com/forddui.htm<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com
fficeffice" /><o
></o>
__________________
FTE Sponsor
Performance Distributors
www.PerformanceDistributors.com
FTE Sponsor
Performance Distributors
www.PerformanceDistributors.com
Thread
Thread Starter
Forum
Replies
Last Post
feo_nuts
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
3
Oct 10, 2006 08:58 PM
Randyb12
FE & FT Big Block V8 (332, 352, 360, 390, 406, 410, 427, 428)
7
Aug 19, 2003 09:37 PM
Henceforward
1980 - 1986 Bullnose F100, F150 & Larger F-Series Trucks
11
Jun 1, 2003 08:00 PM
