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I finally completed my head/cam/header install about 10 days ago and have been driving it locally to find any problems before I make the 5 hour trip to get it tuned. (I end up having one small rattle in the exhaust plate!)
This is the sum total of mods I added:
A used set of AFR 205's milled to 62CC with .040" cometic gaskets.
Guerra custom Comp cam: 224/230
YT Rockers/LS7 Lifters
30# SVO injectors
LG Pro long tubes with cats.
LS2 Chain
I took the car to Charley at RPM to have the tune done. He worked out the initial idle bugs and drove the car on the road for about an hour. When he came back we strapped the car on his dynomite dyno and made the first run. I was hoping for about 380 HP as my car is an auto with 3:42 gears and a Yank ST3500 stall , all of which lower the dyno numbers. After driving the car, Charley said it would be over 400!
So the first pull was 391 HP. After 2 or 3 more adjustments I ended up with 429.8 HP and 393.9 Ft Lbs of torque! All this is with the stock LS6 intake. It makes 300 Ft. Lbs at 2500 RPM and 350 at 3000 RPM!
Good thing Charleys a big guy cus I would have kissed him! I am one happy camper.
Another added BONUS! On the 320 mile trip down, I averaged 30 MPG.
I thought the DIC was wrong! I filled up and it took just under 11 gal.
On the way back I averaged 28.5! Not bad for a motor making over 500 HP! Thanks to Tony Mamo for his words of wisdom, Patrick Guerra for the cam specs, and Charley of RPM for his black box MAGIC!
Awesome numbers. Congratulations. You must be really excited. I plan on an equvilant mod next year. I have an 03 A4 with the 3:42's, AR headers and a 2800 stall. Your numbers have really inspired me.
Thats for sure! I still have the orginal runflats that came on the car in
'02! They have 35K miles on them and are hard as nails. It doesn't take much to spin them now!
I can't wait to get it to the track with the ET Streets!
Very nice numbers. 205's are great heads and when put together with the correct matching components you end up with great results. I'd love to see where the torque curve is. I bet it's nice and fat. That's what makes those heads shine.
I used a vacuum to suck all the water out of the water pump holes prior to removing the heads. That way you don't have to deal with water in the cylinders. I used the permatex gasket remover on the surface and the non metalic scotchbrite pads. Nothing abrasive. I also used a razor blade layed flat to ensure there was no residual material remaining. I did a final cleaning with denatured alcohol just prior to installing the heads.