85Jimmy
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help me pick a carb
- Thread starter NoSmog73
- Start date
Thunder
3/4 ton status
Tim.
You really need to go back and reread my post.
If indeed you can read.
I stated in my post that the 750 cfm Holley and Edelbrock/AFB type: (AKA SQUAREBORE) would not work well on MOST 350s.
Many posters correctly recomended the Q jet.(AKA Spread bore).Most Rochseter Qudra jets used on 350s are made in 750 or 795 CFM
You stated:
"750 is way too big of a carb for a 350"
I thought that the person who started this thread wanting Carb advice may have been confused by your hairbrained statement.
First you say that a 750 is too big then you recomend to get a Quadrajet ?
Do you even know what you are talking about ?
<a target="_blank" href=http://coloradok5.com/gallery/Thunders-Blaze>http://coloradok5.com/gallery/Thunders-Blaze</a>
<font color=blue>NEVADA: Where the pavement ends, and the West begins.</font color=blue>
You really need to go back and reread my post.
If indeed you can read.
I stated in my post that the 750 cfm Holley and Edelbrock/AFB type: (AKA SQUAREBORE) would not work well on MOST 350s.
Many posters correctly recomended the Q jet.(AKA Spread bore).Most Rochseter Qudra jets used on 350s are made in 750 or 795 CFM
You stated:
"750 is way too big of a carb for a 350"
I thought that the person who started this thread wanting Carb advice may have been confused by your hairbrained statement.
First you say that a 750 is too big then you recomend to get a Quadrajet ?
Do you even know what you are talking about ?
<a target="_blank" href=http://coloradok5.com/gallery/Thunders-Blaze>http://coloradok5.com/gallery/Thunders-Blaze</a>
<font color=blue>NEVADA: Where the pavement ends, and the West begins.</font color=blue>
84_Chevy_K10
Banned
Seems that both of us are trying to explain the same thing. I am sorry that I wasn't clear in my first post. When I try to explain these things, I often leave out some crutial things not realizing as I simply take it for granted that they'll probably know these things. They don't. That's my fault.
Seems both of us are agreeing, just not communicating. Let's just both agree right here. I am sorry I didn't specify that I meant squarebore carbs in the first post. Yes, I can read. That's the first time I've ever been called, "Hairbrained". And since both of us are adults, I won't resort to name calling. I'll just agree with you...because I've been trying to do that all along.
As for the blower motor, I have no idea what will work better. That has a lot of factors that can play into it, boost being the main one. I know SQUAT about forced induction anyway, but I would venture to say that it's possible that your blower motor might be able to use the bigger carbs. I would also venture to say that the best carbs for that application are ones that are meticulously tuned by someone who knows blowers well. No matter what the size of carbs you use, the proper tuning on a blower motor is critical and will help yield optimum performance.
As for the motor running lean with a 650 carb and running a little rich with the 750 DP, I'm willing to bet that the size of the carb had nothing to do with why it was running rich or lean. I suspect a fuel starvation problem somewhere else causing the lean condition. I'm just not buying that a 350 can't be tuned to run with a 650 CFM carb on a street engine with a 6,000 RPM redline, especially when, if the motor was 100% efficient, would only be using 607 CFM of air. Those numbers just don't compute.
Where did the lean condition occur? Where in the RPM range?
I'm sure you could make a 450 CFM carb work on a 500+ CID big block if you wanted, and a 1,000 CFM Dominator work on a 350 with the proper tuning. Obviously neither would give optimum performance, but you could make the fuel mixture correct with either. When measuring CFM, you're measuring airflow, not fuel delivery.
Tim
'84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
Seems both of us are agreeing, just not communicating. Let's just both agree right here. I am sorry I didn't specify that I meant squarebore carbs in the first post. Yes, I can read. That's the first time I've ever been called, "Hairbrained". And since both of us are adults, I won't resort to name calling. I'll just agree with you...because I've been trying to do that all along.
As for the blower motor, I have no idea what will work better. That has a lot of factors that can play into it, boost being the main one. I know SQUAT about forced induction anyway, but I would venture to say that it's possible that your blower motor might be able to use the bigger carbs. I would also venture to say that the best carbs for that application are ones that are meticulously tuned by someone who knows blowers well. No matter what the size of carbs you use, the proper tuning on a blower motor is critical and will help yield optimum performance.
As for the motor running lean with a 650 carb and running a little rich with the 750 DP, I'm willing to bet that the size of the carb had nothing to do with why it was running rich or lean. I suspect a fuel starvation problem somewhere else causing the lean condition. I'm just not buying that a 350 can't be tuned to run with a 650 CFM carb on a street engine with a 6,000 RPM redline, especially when, if the motor was 100% efficient, would only be using 607 CFM of air. Those numbers just don't compute.
Where did the lean condition occur? Where in the RPM range?
I'm sure you could make a 450 CFM carb work on a 500+ CID big block if you wanted, and a 1,000 CFM Dominator work on a 350 with the proper tuning. Obviously neither would give optimum performance, but you could make the fuel mixture correct with either. When measuring CFM, you're measuring airflow, not fuel delivery.
Tim
'84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
Thunder
3/4 ton status
Hey, sorry about the Hairbrained statement. I really dont like to call names either ...... but I was a little offended by your saying "You obviously don't know what you're talking about" in reference to my post.
I simply stated some simple true facts to help to keep things from getting to confusing. I meant no offence.
And as you said, basicly we were both saying the same thing
As a matter of fact looking back through it. The whole thing is kind of funny
<a target="_blank" href=http://coloradok5.com/gallery/Thunders-Blaze>http://coloradok5.com/gallery/Thunders-Blaze</a>
<font color=blue>NEVADA: Where the pavement ends, and the West begins.</font color=blue>
I simply stated some simple true facts to help to keep things from getting to confusing. I meant no offence.
And as you said, basicly we were both saying the same thing
As a matter of fact looking back through it. The whole thing is kind of funny
<a target="_blank" href=http://coloradok5.com/gallery/Thunders-Blaze>http://coloradok5.com/gallery/Thunders-Blaze</a>
<font color=blue>NEVADA: Where the pavement ends, and the West begins.</font color=blue>
84_Chevy_K10
Banned
Cool, i'm glad we could agree instead of argue like children. Sorry about the, "Not knowing what you're talking about." People here have told me that before only to be surprised. I just wanted to try it and see what happened if I said it to someone else. 
Tim
'84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
Tim
'84 Chevy K10, lifted, loud, fast, and 3/4 ton axles
