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Message: [QUOTE="ithumpwheniwalk, post: 1471200, member: 739"] For a "stock" 302 the formula is this size(302)X rpm (5,000)/ 3500= 431 cfm so a 450 BRL would be fine with room for headers and such. Stock cam is not going to allow you to pull pst 5k anyways so why put a larger carb on than that? I've ran a 600 Holley on 289's and 302's for years. Never really paid much mind to it until I jumped into a buddys Mustang II with a strong 5.0 and properly set up 450 carb. Quite a difference imo. I ditched my 600, got a vacuum secondary 450cfm carb and never looked back. My .02 cents fwiw. (also, I've read this thread from end to end at an earlier time, and couldn't remember if you cammed the motor or not. this is in reference to a stock motor) [/QUOTE]

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