tuning
Thread Starter
|
Senior User
Joined: Nov 2002
Posts: 316
Likes: 0
From: ca
tuning
i have a 400 built to the hotrod specs with the exception of a sp2p intake and a 600 cfm 1406 edelbrock performer. the problem is that when i drive the car it seems to be lacking alot of low end power. i gained some by setting the initial advance to like 10 degrees and now it has power right off idle (spins the tires a bit) and then it bogs down and as it spins up it gains power again and you get thrown back into the seat. is this jets accelerator pump or what, i have no experience with carbs at all so im kind of in the dark here.
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
tuning
Is your vacuum advance working and is it hooked up properly?
What cam did you use?
The 1406 is jetted lean on the primaries for economy, the power enrichment system is also set lean. Check the instruction book that came with your carb for some adjustment procedures and you may need a tuning kit.
What cam did you use?
The 1406 is jetted lean on the primaries for economy, the power enrichment system is also set lean. Check the instruction book that came with your carb for some adjustment procedures and you may need a tuning kit.
Thread Starter
|
Senior User
Joined: Nov 2002
Posts: 316
Likes: 0
From: ca
tuning
im running a r.v. cam 484-510 lift 270 280 duration
the carb didnt come with a book (sadly) am i expecting too much from the runs out of the box slogan? how will I know to change jets without an o2 sensor or scope?
the carb didnt come with a book (sadly) am i expecting too much from the runs out of the box slogan? how will I know to change jets without an o2 sensor or scope?
Posting Guru
Joined: Aug 2000
Posts: 1,984
Likes: 2
tuning
Dustin, pull a sparkplug and check the color. You are looking for a nice tan or gray color on the electrode area. White means it's too lean, sooty black means it's on the rich side.
If the plugs are a good color, take a look at the accelerator pump setting.....
If the plugs are a good color, take a look at the accelerator pump setting.....
Posting Guru
Joined: Aug 2000
Posts: 1,127
Likes: 3
From: (near) Denver USA
tuning
You can get the manual for your carburetor online at the following URL:
http://www.edelbrock.com/automotive/eps_intro.html
http://www.edelbrock.com/automotive/eps_intro.html
Thread Starter
|
Senior User
Joined: Nov 2002
Posts: 316
Likes: 0
From: ca
Trending Topics
Posting Legend
Joined: Sep 2001
Posts: 30,255
Likes: 37
tuning
All Edelbrock carbs come with a nice thick instruction book. Most people throw them away tho...
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
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
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
Lead Driver
Joined: Nov 2000
Posts: 6,628
Likes: 345
From: Albuquerque
tuning
I would try advancing timing to 13 degrees and see if you can get by without any piging. These motors are very timing sensitive especially when modified. The like a lot of initial but you have to be carefull of total timing not going over 40.
