Whats is the average HP there r getting out of indy 655 CI with 600-13 heads

1095 single Dominator

1197 sheet metal tunnel ram with 2 Dominators

all in at around 7000

really good tried and tested combinations with a sheet metal intake and 2 X 4 dominators will make 1400 to 1450 NA with no power adders. Birdtracker

Ours is pretty basic and boring. It is a nitrous piece we run NA for now. Had two kits on it at. We make 1100ish now with a single 4. I bought it and just freshened it and corrected some assembly "mistakes" runs better now than it did with a tunnel ram and two fours. In fact I just sold the inake and Books to a buddy of mine in need. Anyway its been low 4.60's here in Vegas at 1920lbs so far so you decide what it makes.

Just thought I'd crunch the no's on this one.....1920lbs, 970fwhp so far.

60 Foot E.T. : 1.02 Seconds
1/8 Mile E.T. : 4.61 Seconds
1/8 Mile Trap Speed : 147.29 MPH

1/4 Mile E.T. : 7.31 Seconds
1/4 Mile Trap Speed : 183 MPH

the Stratus motor was smaller and made the same power in a door car. Birdtracker

Just to show how calculators are just a tool, car has already been 7.23 at 185. Some cars back half better than the calculators seem to show, most of ours do. This of course does not take into account the elevation, ie lack of barometer(28.00 is mineshaft baro here) in Las Vegas either. We keep chipping away. Car went 4.58 this weekend at 150.60. Smaller headers, and much smaller collector that we finally got done and on the car account for the improvement. Just need to play with jetting and timing again now. Also this new car needs a four link change in a bad way too. But we were bracket racing so made the change and ran it as is.

FWIW in terms of elevation here in Vegas you can usually subtract .2-.25 off your 1/4 mile ET compared to a more sea level track. The runs this weekend corrected to high 4.20's low 4.30's in the 1/8 to sea level conditions. Not that most of us not living on the eastern seaboard ever see those kind of conditions.