Which type of carburation best for '68 mustang 302? - Mustang Evolution

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Old 03-27-2010, 07:15 PM   #1
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Which type of carburation best for '68 mustang 302?

I went to a car show this weekend and everybody either had fuel injection or a single 4-barrel carburetor. I have a generic Holley 600 cfm and am tired of 'fitting in', and even before this I was thinking of changing to something else, something bigger. I was thinking of either a tri-power setup (three 2-barrel carbs), dual 4-barrel carbs, or a weber 48 IDA Cobra setup. Has anyone had any experience with either of these? Gas mileage and horsepower is of no concern. I know that my automatic transmission (Ford AOD) will work with the dual 4-barrel and am fairly positive that it will work with the tri-power as well, but I don't know if the weber 48 IDA's would work with automatics. My engine should be able to handle the extra carburation, it's been bored .060 over (now 311 cubic inches), RHS heads, 224 in. & 230 ex. duration @ .050 cam (hydraulic), 10.1:1 compression, and is producing in excess of 390+ horsepower or at least that is what my engine builder says. The 600 cfm holley was on the engine before it was rebuilt and seemed a little small afterwards but still performed decently so it stayed and now it's time for it to go. If you have any experience, any advice or warnings I would like to know. Thanks
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Old 03-27-2010, 08:05 PM   #2
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Which type of carburation best for '68 mustang 302?

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Old 03-27-2010, 08:09 PM   #3
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Which type of carburation best for '68 mustang 302?

From a performance standpoint, a single carb will probably give better throttle response. I have a very similar engine with the exception of the heads. (I have early 351w ported heads) I replaced the 600 holley on mine with a modified 2 barrel that came off of a 390 F350 truck engine. It isn't pretty, but it has a lot more torque under 3500 rpm.
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