Who DD a comp xfi 280?
Going by the specs, I would say it is too big for stock heads, but would be great with ported heads, gears and/or stall, and dyno tuning.
It would be right at home in a DD 383, but run like *** if you just throw it in a stock engine without supporting mods.
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I went with the 280 because of the slightly wider LSA which helps smooth out the idle quality. I'm not on the tightish LSA bandwagon.
Anything specific you want to know?
Jake
http://www.ls1.com/forums/showthread...ghlight=280xfi
With your mods, A cc503 is probably to small for what you want out of it. The ported heads you have would suit a cc306 or GM847 cam alot better then a cc503. The cc503 would work and probably have the best street manners of the 3 i listed, but youd leave power on the table.
Im not a huge huge fan of saying this, but the cc306 would probably be the best choice for you. Alot of people run it with stock heads and its driveable, you having a 355 with ported heads it would probably be one of the best (shelf) cams for you. Or like everyone else has said call up LE and tell him what you got and what you want and get him to do a custom grind for you, or advanced inductions as well.









