[WadeT]

Pretty suprising suff!

Got this from another message board.

 

[Joseph]

Do 89 & up have higher HP than 87-88's?

 

[Supra Bob]

What exactly effect would that have? How much of a flow increase would that give, ya think?

 

[WadeT]

White_mk2, yes the 89+ have 2 more HP and 8 more FT - LB. of torque. Modified I have no idea what the difference might be.

Yea Bob, the 89+ ports appear to have more volume than the 87s. Some have stated that the 87s might flow better for N/A and the 89s better under boost.

 

[Supra Bob]

I was thinking the difference kinda seemed like the difference between an single and dual plane intake.... which would agree with what ya just said