HO cam
Reply #45 –
...your previous claims of going 10,000,000 mph in a stock T-bird...
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Most people think the cobra/explorer/gt-40 upper intakes are all rediculously close....and they are in design and they'll all make a little different horsepower on the same lower...the fact of the matter is, the LOWER intake is the restriction. So, stepping up from a cobra/explorer upper to a GT40 tubular upper won't be much of a gain unless you have a well ported lower.
And, as V8Demon stated, you don't have much of any room for porting...whereas a cast piece has plenty of room for porting. I actually PREFER the cobra/explorer upper...I was just trying to inform you that there IS, infact, a difference between the cast and tubular pieces.