[redbird1]

I intended to post this Thursday night but I figured I would put out a little teaser.
My car is going on the dyno Thursday for it's tune with the new setup. I'm geeked! I've been running a base tune that they put in last fall. Car feels very good/strong.
Here's a few pics.
(IMG:http://img.photobucket.com/albums/v294/Redbird1/engine/e1dc9395.jpg)
(IMG:http://img.photobucket.com/albums/v294/Redbird1/engine/08a5ae20.jpg)
(IMG:http://img.photobucket.com/albums/v294/Redbird1/engine/b9d73198.jpg)

GMHTP had a 383 with ported stock heads put down (uncorrected) 448.5 at the crank. I have AFR190 street port. Not sure if this is better or worse than the ported stocks. Find out Thursday. My hope when I started this was 400 HP at the wheels. Wish me luck.

Steve

[redbird1]

Well here we go.
The final numbers are in, 370.6RWHP (5900RPM) and 361.2 torque(4600RPM)
The dyno was reducing by .95% for weather. Making uncorrected 388RWHP,378T.
One thing that was not right was a quick drop in HP at 5900 RPM. At 5900 rpm there was 370HP, at 6300 rpm 330HP. A drop of 10 HP every 100 rpm. He was slightly concerned with this. Due to this we were lifting at or right after 5900 RPM. I was very cool with that. I did not want to watch my motor let go on a dyno.
The dominent theory was valve springs. The springs came with the AFR heads. I need to find out what they are. I hope AFR can tell me. Cam specs say to use Comp Cam #26918-16

When the wife gets home and tells me how to get the scanner to work, I will post a graph.

383cid
AFR 190 street port
10.5:1 compression (approx.)
Diamond pistons
Eagle rods
Comp Cam: @ .050 224/230/112 w/1:6 rockers,.503/.510 lift (not very big at all)
1:6 pro magnum roller rockers
electric W/P
Alum flywheel
6spd
11x17/315's

A little short of my goal. And I am a little disappointed. But not completey. For now it is what it is.
Now to have fun.

Steve