new carburetor
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Mountain Pass
Joined: Aug 2021
Posts: 144
Likes: 21
do you have an electric choke ?
what do you think about the classic 750cfm holley ?
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Mountain Pass
Joined: Aug 2021
Posts: 144
Likes: 21
did you need to do some adjustment after you mount it ?
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Mountain Pass
Joined: Aug 2021
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what about your miles per gallon, is it better?
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Tuned
Joined: Jan 2021
Posts: 254
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From: Longview Texas
A slight improvement over the 750 that was on it. I did not get to drive it much after the swap since I took it to the body shop and it has been there for a year now. I hope to get it back real soon. I was getting a little over 8mpg around town. I'll work on that when I get it back. I have a 3.25 rear axle.
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Tuned
Joined: Apr 2023
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i would want more cfm than less. a 750 or 850 would be my choice and a double pumper design like the brawler should give better throttle response.
i've always heard the general rule is to double the cubes in cfm as a good target to maximize hp's... dropping below that target robs hp starting at the higher rpms so taking that target literally for a 460 in a truck is likely a waste because you likely don't care about what it makes at 6500 rpm, but obviously putting a smaller carb on only improves mpg by limiting you from putting more air and fuel through the motor.
i run a 600 street warrior on my 302 in my f100 and it seems perfect... i swapped a 750 brawler in place of the 600 street warrior the PO had in my 390 f250 and it really woke it up. the only reason i get worse mpg's is because i can't keep my foot out of it.
i've always heard the general rule is to double the cubes in cfm as a good target to maximize hp's... dropping below that target robs hp starting at the higher rpms so taking that target literally for a 460 in a truck is likely a waste because you likely don't care about what it makes at 6500 rpm, but obviously putting a smaller carb on only improves mpg by limiting you from putting more air and fuel through the motor.
i run a 600 street warrior on my 302 in my f100 and it seems perfect... i swapped a 750 brawler in place of the 600 street warrior the PO had in my 390 f250 and it really woke it up. the only reason i get worse mpg's is because i can't keep my foot out of it.
Lead Driver
Joined: Oct 2018
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A 600-650 would be best, a 750 is overkill but it's what I'd run. your best option would be a 4160 electric choke with single feed. double pumpers are not for pickups and especially not for an automatic without a stall.
It will come factory adjusted you'll just have to set idle mix and speed. after running it you may need to adjust the choke or jet it a little if you want optimum performance.
Holley is the king for a reason, they just work. and they're simple to work on and all the parts are at any local auto parts store.
It will come factory adjusted you'll just have to set idle mix and speed. after running it you may need to adjust the choke or jet it a little if you want optimum performance.
Holley is the king for a reason, they just work. and they're simple to work on and all the parts are at any local auto parts store.
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Mountain Pass
Joined: Aug 2021
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Lead Driver
Joined: Oct 2018
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That would work, but personally I'm not a fan of any of the warrior series.
I have 4 of these on everything from a 428 to a 460. they work perfectly.
Holley 0-80459SA 750 CFM Classic Holley Carburetor
One thing to remember is CFM has nothing to do with fuel economy, within reason of course. how you drive and your jets determine how much fuel is metered in. the only disadvantage to sight excess CFM is throttle response and there is no noticeable problems with a 460 or anything like it. there is no advantage either until you reach an RPM you're not going to see.
The 600 will work fine, so will the 750. it's just personal preference. spend a few minutes jetting them in and you'll be happy.
I have 4 of these on everything from a 428 to a 460. they work perfectly.
Holley 0-80459SA 750 CFM Classic Holley Carburetor
One thing to remember is CFM has nothing to do with fuel economy, within reason of course. how you drive and your jets determine how much fuel is metered in. the only disadvantage to sight excess CFM is throttle response and there is no noticeable problems with a 460 or anything like it. there is no advantage either until you reach an RPM you're not going to see.
The 600 will work fine, so will the 750. it's just personal preference. spend a few minutes jetting them in and you'll be happy.
Lead Driver
Joined: Oct 2018
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They're essentially the same carb. the warrior series just does some dumb things just to be different for marketing purposes, like the phony screws on the float adjustment that look like they belong on a dishwasher. why.