[hugger6933]

Yes the closed chambers but the runner volume is large enough for what your doing, you don't need 360cc intake runners or anything like that for the street or your bottom end is gone. Trust me have I ever told you wrong?Ever? One thing you can do is shave some CC off your heads to gain some compression just be careful that if you go too far you may need the intake bolt hole slotted or the sides of the intake ground to offset the heads. I have done that on a big block I had in my Chevelle bracket motor. you can gain some that way as well. Jim