Quote:

---

"I saw thirty HP using a Indy cast RB M.W. port size tunnel ram intake with two 1050 Dominators over using Indys 440-3 intake with a single 1050 Dominator I was hoping for more "


Cab Burge: Was that on a 572 motor with the 572-13 heads???

Mike

---

No, it was a 526 C.I.(4.380 x 4.375 stroke) 440 block with a set of 440-1 CNC ported by MCH that flowed 370 CFM at .600 and up on the lift That motor with a set of Indy SR M.W. ports and the same carb. and intake made 50 HP less than with the 440-1 CNC ported with no other changes. I swapped both sets of those heads on my 518 C.I. pump gas motor on the same dyno two weeks apart and it made 50 HP more with the 440-1 heads The extra 1050 didn't make as much difference as I expected It did what it did BTW, I have seen several high dollar race BB Chevy tunnl ram motors that have a different jet size in each barrel of both carbs Maybe I should use the EGT readings, going fatter first, to jet instead of changing all eight jets at once Maybe that will be one of my next dyno testing test