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(09-22-2012, 07:03 AM)keith1562 Wrote: I'm running the standard version performer, not the performer RPM.
If you can find a stock intake at a good price, I'd probably go with it. You can always upgrade later. Clevelands are well designed from carb. to oil pan. The Ford engineers got this one right, it will run great with a stock set-up. By the way I ran a Holley 600 vac. secondaries, and now I'm running a Carter Competion 625 cfm. But again a stock ford 4v is a great carb.
Keith
I got a good price on a Holley Street Avenger 670 locally on CraigsList.
I'm going to call the guy with the stock intake. Can't beat $50!
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If your dead set on using a stock 4v intake. At least put a 1 inch open spacer under the carb, as that will increase the plenum area, and allow a little better fuel distribution. When you do get a better intake you will see the difference. JTS 71 Macn1
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Holley, Weiand, and Offenhauser all use the same basic design on their square bore dual plane intake. I like Edlebrock because their made in the U.S.A., that being said $50 is a great price and I'd go for it. If you go with the Holley I recommend port matching using a gasket as a guide. you shouldn't have to remove much material, but it's worth doing. Also make sure you have a carb. thats compatable(spreadbore vs square bore), you can buy adapters but I have no experience with them. JTS71 Mach1 is right about using a spacer with a stock intake. I've got a 69 cougar with a 351W, I'm running a factory intake with 1" aluminum spacer. It doesn't run like a Cleveland but it's a very solid performer.
Good luck,
Keith
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Thanks for the advice, guys.
I will grab the stock intake.
But being that all I have is a bare block with a lot of parts for it, I will probably have the time to save up for the RPM Air-Gap. I like the idea of running the stock first to have the A/B comparison to the Air-Gap, but knowing me I will go straight to the good stuff.
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Let us know how things turn out. I just got the 351c in my Mach1 rebuilt. Since you're doing a complete rebuild I recommend that you get the rotating assembly balanced. If your thinking of an intake designed for high r.p.m. (air gap r.p.m.) then it makes sense to spend that little bit extra. If you don't have heads yet, I'd look for a set of early (1970) or Aussie q
uench big valve heads.
good luck,
Keith