Carb Question
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Senior User
Joined: Nov 2007
Posts: 106
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From: Madison, MS
Carb Question
I'm considering retiring my tired old 2 bbl on my '65 352 and replacing it with a Holley 2 barrel 500 CFM / manual choke unit. Anyone have any sage advice about this move. Is it up to the task? I'm looking for a smoother throttle response and not necessarily a power boost. Its already overpowering the 3 speed tranny and rear end...
Thanks ya'll
Thanks ya'll
Mountain Pass
Joined: Dec 2003
Posts: 166
Likes: 6
If you're talking about the Holley 2300, part number 4412, that's a high-performance carburetor meant for circle-track racing where the rules limit you to a 2-bbl carburetor.
For a truck engine driven on the street, I think you'd be happier with part number 7448 instead. It's only 350cfm but that's generally more than enough under 4000RPM. For idle quality and low-rpm throttle response, a small carburetor is hard to beat.
For a truck engine driven on the street, I think you'd be happier with part number 7448 instead. It's only 350cfm but that's generally more than enough under 4000RPM. For idle quality and low-rpm throttle response, a small carburetor is hard to beat.
More Turbo
Joined: Mar 2007
Posts: 707
Likes: 1
From: Buffalo, Wyoming
Well i put that exact carb on my 352. It was 8 months between carbs so i can not say for certain, but the seat of the pants feels like it picked up alot on the top end.
I figured out how to get the fuel line and vacume lines to work. And i had to lightly modify my throttle cable. It was the the first part swap i had ever done and it didnt take me more than an hour including the time finding the right sockets and wrenches. It was very easy.
I was disappointed that it was supposed to be a bolt on and go deal, but it still has a dead spot in the throttle right off idle. Other than that response increased slightly over the mid rpms and picked up a lot on the top end.
I figured out how to get the fuel line and vacume lines to work. And i had to lightly modify my throttle cable. It was the the first part swap i had ever done and it didnt take me more than an hour including the time finding the right sockets and wrenches. It was very easy.
I was disappointed that it was supposed to be a bolt on and go deal, but it still has a dead spot in the throttle right off idle. Other than that response increased slightly over the mid rpms and picked up a lot on the top end.
Thread Starter
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Senior User
Joined: Nov 2007
Posts: 106
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From: Madison, MS
Hey, Thanks Fellas. I'll report back on this post after a couple weeks. Leaving the country on Tuesday for for a bit and will hop on this when I return. All good info, love to hear your experiences.
