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I am building a 429 with port and polished heads. I was wondering what is the best intake to put on it. I want a single plane and I am putting on it a 1050 Dominator. What is your best suggestion?
I am building a 429 with port and polished heads. I was wondering what is the best intake to put on it. I want a single plane and I am putting on it a 1050 Dominator. What is your best suggestion?
I hope you have some idea what size that carb is actualy. what are you doing with this, reason I ask is I run a 1090 king demon on a 528cid engine that shifts at 7200 rpm. A 1050 on a 429 is enough carb to about 11,000rpm
Im making it for a mud racing truck for a 78 F-250. My range will only be to about 7000 or so. Just trying to get a feel for what other people have had luck out of. I know a lot of guys who run the victor 460 and love it, but i was just wondering if there was one better?
I guess my old 289/302 Buddy Bar tri-power with 350 cfm Holleys is good to about 20 grand then, right??!!!
Seriously, for street use a 1050 is too big.
A Holley field tech once advised me that a lot of little holes work better than a couple of big holes. He was refering to the 390 six pack I had on my 428CJ. On the 390 the 3X2 was rated at 860 cfm and the same setup on a 406 was rated at 920cfm. He calculated that the set up flowed 955 cfm on the CJ which should be good to 7730 rpm. The 3x2s dropped a 1/10th of a second on my quarter mile et from the stock 735 4V.
Bear the main reason for you gains as I understand the principle is the smaller holes will have a faster violocity of the air causing the fuel to atomiz better and thus cause a better burn.
I run the victor style intake with a dominator (mines actually a FRPP manifold for use on the A460 heads but they are made by edelbrock for ford) and I run a 2" supersucker spacer, I can tell you I saw a mrked improvement when I put that spacer on.
I was aware of the "a lot of little holes" theory and why it works. As to the " mrked improvement ", was that seat of the pants or was that from time slip, before and after the change. I can tell you that seat of the pants will lie to you. Many times I thought a change was gonna be good because of the "seat of the pants" feel and the time slips showed that the feeling was completely wrong. I quit trusting the seat as a preformance indicator back in the early '70s. Bigger is not always etter, even on a race only setup.
Well it's not really from time slips as the places I raced before putting the spacer on didn't actually time it but rather just who crossed the finish line first. But I can tell by either how much I beat trucks that I had raced without it or the fact that I was able to beat a truck after I put it on that had beat ;me before I did.
Also several people in different places have noted a 20-25hp increase in the dyno using those spacers, and I trust dyno numbers pretty well.