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Hi guys!

Just wondering about the shoulders in the exhaust ports and if they're just a thicker casting or if there are water jackets lurking back there. Can these shoulders be carved out to better accommodate a 2" header?

Thanks for your help.
 

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You can go up and wide. But don't touch the floor. You also don't need to hog out either. Just a good reshape and blending will do wonders. Same with the intake ports. Don't hog these out either. You will actually lose power with too large of an intake ports.
 

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Hi guys!

Just wondering about the shoulders in the exhaust ports and if they're just a thicker casting or if there are water jackets lurking back there. Can these shoulders be carved out to better accommodate a 2" header?

Thanks for your help.
Why do you want a 2" header?

If you have a 2" primary header already then you would be WAY better off stepping the primaries by making them 1 7/8" at the flange then going to 2" further out away from the head.

IMO, even 1 7/8" is too big for a plane jane street car . . . I wouldn't even consider a 2" unless it was 1.8L+ and you were spinning it 9000RPM+
 
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