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Hello, I have been running a 600 cfm Autolite 4100 for about 10 years now. I have decide to switch over to the 4100 with 480 cfm from Pony Carburators. I have a 289 that makes around 260 HP. Does anyone else run the 480 and is it that much better than the larger 600 cfm for my application as far as smoothness and power? Thanks
 

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I would tell Pony Carbs. your combo and let them give you the best advice. I would tend to think the 480 will give you real crisp response and fall of slightly compaired to the 600 version. I'd be interested too. I also have a 600 cfm 4100 that I give thoughts to trying. Good luck.

Tom
You can do anything you want to......ONCE!
aka "my 66 coupe"
 

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The 67 coupe I will be picking up this week has a 4100 carb on it. How can I tell which CFM it is? is it marked?

John


[color:blue]66 coupe 289 2v C4 needs restore</font color=blue>
[color:blue]70 coupe 351W 2v c4 almost done (?)</font color=blue>
[color:red]71 coupe 302 2v C4
 

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Package it up very carefully and send it to me asap for identification! Just kidding. The 480 cfm carbs have a 1.08 stamping on the side and the 600's have 1.12 stamped on them.

Ronny
68 Fastback, 66 Coupe, 64 Ranchero
Mustang Owner's Club of Austin, TX
 

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We run a 450 Holley on some of our street cars and they work great.
The smaller carb. gives better of the line performance. The only place
we see a difference is in the upper rpm or on the highway the car won't
pull as hard. I have put them on cars with 750 and 780 carbs and the
car is faster with the 450 around town.

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