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What other mods are done to the car? My first guess would be 650 double pumper, mech secondaries, and a Holley Blue Elec. Pump. That's what I had on my old car and it ran great
 

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I think he meant that as in more of a what's been done to the engine sort of way. What heads, cam, and that sort of thing y'know.

By the way welcome to the forums.
 

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Discussion Starter #5
eagle crank and rods
srp forged pistons
comp valve train # 31-250-4 grind #fsxe284h-10
roush world heads
vic jr intake
msd dis
true roller
 

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Ok, now what are the specs on the heads (flow rates and etc.) and the cam (duration, lift, etc.)? I'm going to say AT LEAST a 650 cfm carb. You may want a little more though depending on the specs of the parts you listed.
 

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Agree with countryboy... What kind of compression are you going to be working with?
 

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That's too much

If that is an XE284H cam, it will make peak power before it gets to 6000 RPMs. Even at 6000 it goes....

347X6000 = 2,082,000

2,082,000 / 3456 = 602.4 CFM

Considering most OTB carburetors don't flow the advertised numbers, I'd say a 650 mechanical secondaries would be perfect.
 

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I thought that was a bigger, higher winding cam than it actually is. I never looked up the specs for it but for some reason I assumed it was.

So my bad on suggesting possibly going bigger than a 650.
 
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