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Originally Posted by BowTie Eater 5 Liter
gt-40 p is a head, there gt-40 irons, alumiums, gt-40 x, and probably more
the cobra and explorer are all gt-40 style intakes, except the non tubular(cobra and explorer) uppers can be ported, i think the wall thickness of the actual gt-40 upper is too thin to port
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so the non tubular ones are the better ones or no? is the gt-40 intake a substantial upgrade from stock? and what size throttle body works well ? i am thinking about 65-70mm.
also, can i use the gt-40 with speed density? will i need to use larger injectors?
thanks