carb and intake manifold
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Senior User
Joined: Sep 2002
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From: Calgary Alberta
carb and intake manifold
Hi I am looking at installing a new carb and intake maifold on my 1970 F100 (302) Anybody got any sugesstions? I have also heard that a four barrel can be more efficient than a two barrel. Fact or fiction?
Senior User
Joined: Sep 2002
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From: United States
carb and intake manifold
I'm going to do exactly the same thing. I've got a line on a factory four barrel manifold and if I use a factory 4 bbl then I should be able to use the same air cleaner assembly. My 302-2v is such a dog!
Larry
Larry
Logistics Pro
Joined: Oct 2000
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From: All over Texas
carb and intake manifold
>I have also heard that a four barrel can be more efficient than a
>two barrel. Fact or fiction? .....not if you're always into the secondaries.
If you plan on buying ~$500 worth of nice new products, you'll probably NEVER recoup your investment merely in gas savings. Not trying to dissuade you from doing it (I’ve got a Performer RPM and Edelbrock 600 CFM on my truck), just want you to know the facts.
>two barrel. Fact or fiction? .....not if you're always into the secondaries.
If you plan on buying ~$500 worth of nice new products, you'll probably NEVER recoup your investment merely in gas savings. Not trying to dissuade you from doing it (I’ve got a Performer RPM and Edelbrock 600 CFM on my truck), just want you to know the facts.
Elder User
Joined: Mar 2002
Posts: 609
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From: Watauga TEXAS
carb and intake manifold
[updated:LAST EDITED ON 06-Oct-02 AT 10:41 AM (EST)]"If you plan on buying ~$500 worth of nice new products, you'll probably NEVER recoup your investment merely in gas savings."
It's not about "recouping" your investment in the future, it's about lowereing your fuel bill RIGHT NOW.
I don't think this is the only factor considered when doing the conversion, at least it wasn't for me. It was definately the increase in power, which others may think it's not much with a cast iron four barrel intake, but when you are used to a stock 360 and a 2v Autolite, it is a considerable boost in power.
I wasn't sure about doing the swap until I finally priced the intake and carb- Intake was $35 at a wrecking yard, and Holley 600 CFM w/ vacuum secondaries for $200- you can't beat that very often.
So for those trying to decide for themselves, there is an increase in power- sure. But for me, knowing that I wouldn't be using any more fuel than the stock 2v is what put me over the top.
Joe
It's not about "recouping" your investment in the future, it's about lowereing your fuel bill RIGHT NOW.
I don't think this is the only factor considered when doing the conversion, at least it wasn't for me. It was definately the increase in power, which others may think it's not much with a cast iron four barrel intake, but when you are used to a stock 360 and a 2v Autolite, it is a considerable boost in power.
I wasn't sure about doing the swap until I finally priced the intake and carb- Intake was $35 at a wrecking yard, and Holley 600 CFM w/ vacuum secondaries for $200- you can't beat that very often.
So for those trying to decide for themselves, there is an increase in power- sure. But for me, knowing that I wouldn't be using any more fuel than the stock 2v is what put me over the top.
Joe
Junior User
Joined: Mar 2002
Posts: 74
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From: Bealeton Virginia
carb and intake manifold
airflow is the name of the game -- that 2v can dribble as much gas into the engine as a 4v, but can't supply the airflow to make sure it is properly burned. Now the fuel savings is valid with a 600cfm elec choke edelbrock, but put a dual feed dominator on it (can you say overkill times ten?) and thats a different story!
Chris Seay
Bealeton, VA
49 F1s
68 F100
Chris Seay
Bealeton, VA
49 F1s
68 F100
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From: texarkana, tx
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