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#1
01-17-2006, 05:20 PM
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Carb.. too small?
Hey, i have a 73 mustang with a 351W and i want to know if a 600 CFM carb will work well or if its gonna be too small. The engine will be mildly modified, the only things im putting on it are headers, new mid-size intake, the carb, new cam, and that may just be it.
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#2
01-19-2006, 08:51 PM
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Re: Carb.. too small?
I don't remember what monthly issues, but Mustang Monthly and I think Car Craft had a chart of cubic inch to cfm. Don't quote me but you may want to go to 650cfm. Like I said don't quote me but look for those charts. If I remember correctly 650 was too big for a 302 though. I don't know if that helps or not. I know on the Mustang Monthly it was within the past 2 years. Hell, you might look at the chart and see that 600 is just right for the 351. Good luck.
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#3
01-20-2006, 09:32 AM
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Re: Carb.. too small?
I have an olds 350 with a performance intake, headers, and 3/4 race cam. I have a 650 double pumper that does its job very well. It has no problem at all lighting the L60s up whenever I ask it to.
__________________
1969 Olds Cutlass 1985 Olds Cutlass 2000 Ford Ranger 2001 Jeep Cherokee Sport
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#5
01-23-2006, 04:50 PM
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Re: Carb.. too small?
That carb size formula always turns out a CFM that seems to be smaller than what an engine can really use. I agree that a 600 or 650 will be fine. A heavy breathing modded 351W might need as much as 750, but a stock or mild engine will have better economy and drivability with the smaller size.
__________________
1968 Mustang notchback Roller 302, Edelbrocks, Hookers, side-exits, RRs, Crane 2031, Duraspark, forged slugs, X-Celerator, 650DP, Fidanza FW, RAM clutch, Toploader, Comp Plus, McLeod bell, 15x7s, 1 1/8 swaybar. 1972 Ford Pinto SVO 2.3 turbo, MegaSquirt, T5, 8", etc. '95 Honda XR600-10.5:1, 628cc, ported head, & more.
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#6
01-26-2006, 03:53 PM
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Re: Carb.. too small?
The ol' Boss 302s came with 780
 , but then again they were made to turn 8000rpms all day long.
__________________
 R32 GTR w/351w .020 forged, 8.9:1, PTK T76, Turbosmart 40 BC & 45 WG, Tial 40 BV, AFR 205s 310/245, 228/228 550/550 114 Hydro, 1.7rr, Isky RLs, 4" HKS exhaust, ARC 30x16x4 IC, 8 point cage, C2 gauges, 2 step, C4 3200 stall w/ R Manual & Hurst Ratchet shifter, 17" Panasport G7s, CSU 750 & bonnet, Vic Jr intake, 3.63 gears, Corbeau Carrera seats, Custom wide body, Bomex side skirts and rear 1/4 caps, Tommy Kaira bumper.
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#7
01-26-2006, 03:56 PM
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Re: Carb.. too small?
Best car to ever come from Dearborn.
Dad had a 70' grabber green one and uncle had 70' orange one. Dad's was a 4 speed w/ 4.11s out back.
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02' Mustang GT - auto, 4.10s, K&N, catback, UDPs, hypertech.
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