Your donations help keep this valuable resource free and growing. Thank you.
|
Which carbs+jets do you use? |
Post Reply |
Author | ||
DaemonForce
AMC Addicted Joined: Jul/05/2012 Location: Olympia, WA Status: Offline Points: 1070 |
Post Options
Thanks(0)
Posted: Apr/24/2017 at 10:17pm |
|
I have the stock Autolite 2100 series 1.08"(287cfm?) venturi with tag 0DA2A that references nothing, but goes to my 1970-1971ish 304. Rebuilt it and reused the 48F jets. I'm wondering what all everyone runs and how it responds. The 48F jets seem a bit poor for this engine and when I swapped in a set of 54F jets I not only got a bit more power but now it will start without cracking the throttle open. I had to lean it out since it wants to do burnouts on gravel but cruising on the main drag with this is MONEY.
When I look at other carbs, there's some size variation like 1.21 with the Motorcraft carbs I have from various Ford pickups but the CFM rating looks way too high, or is it? The one reference I find for this carb size is a 1982 Ford Mustang GT 5.0L using 57F jets. The Holley XP is rated 500cfm and ships with 74(.081"?) jets. What is good for the street and what is good for racing? |
||
FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4741 |
Post Options
Thanks(0)
|
|
47 or 48 were the stock jets on the 1.08" carburetor and normally work great. It's weird that yours wants more fuel. Perhaps the power valve is stuck shut or not getting vacuum. 55 or 56 were the stock jets on the 1.21" carburetor. |
||
1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
||
Class Guy
AMC Addicted Joined: Jul/02/2007 Location: Arkansas Status: Offline Points: 969 |
Post Options
Thanks(0)
|
|
0DA2 is a 1970 AMC carb for a 304. Where did you find the reference to the 82 Mustang 5.0 carb?
|
||
tsanchez
AMC Addicted Joined: Jul/09/2007 Location: Arizona Status: Offline Points: 4302 |
Post Options
Thanks(0)
|
|
I have noticed the 48 jets work well if you are at 3000ft or higher, at lower altitudes they def run better with .052 or more jet
|
||
DaemonForce
AMC Addicted Joined: Jul/05/2012 Location: Olympia, WA Status: Offline Points: 1070 |
Post Options
Thanks(0)
|
|
Seems to check out since I'm @100ft or less. Not sure what this does to mileage but so far I don't see a problem. |
||
Post Reply | |
Tweet
|
Forum Jump | Forum Permissions You cannot post new topics in this forum You cannot reply to topics in this forum You cannot delete your posts in this forum You cannot edit your posts in this forum You cannot create polls in this forum You cannot vote in polls in this forum |