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If you want more cubes I would do a GM L8T 6.6 crank. The L8T crank is good for 1500hp and gets you 401ci.
Either way you don't "need" more cubes to hit 1000. Plenty of stock crank LT1/LT4's have done it. More cubes will allow you to get there with a little less boost. And that is probably a good thing with a F series procharger because they like to chew up belts when spun hard.
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2016 NFG SS A8/Whipple 2.9/Fuel System/Flex Fuel |