Reply to "Breathers and PCV"

George,
Thanks for the advice on how to test the PCV. Since I really like the look of the billet breathers, I will do the test before I consider plan B.

Yes, the carb is a 750 4150 HP. You will note that I followed your advice on using CHI heads as well as the Scott Cook dual plane intake. CHI leveled the carb pad for me (well almost, they were able to get it to within 2 degrees from level). I'm still hoping to fit everything under the stock engine cover. I realize that CHI heads are now yesterday's news, but I feel that they are a great choice. The engine builder was really impressed with the CHI heads, but he was probably most impressed with how good the dual plane intake worked.

The egine was bored .020" over with an internally balanced 3.750" stroker, which equals 380 c.i. As you recommended, an ATI Super Damper was used. They used a Windsor timing gear to make the spacer for the crankshaft. We used a Comp Cam with solid roller lifters and roller rockers. The lift is .659 intake and .666 exhaust. Duration at .050 is 242 intake and 248 exhaust.

As for the dyno, I was able to witness pull #3. Running 93 octane, 10% ethanol pump gas with timing set a 30 degrees, the peak HP was 522 at 6600 rpms. It ran right up to 7000 rpms and wanted to keep on going. It was still making 519 HP at 7100 rpms, but also was making over 500 HP at 5700 rpms. Torque was pretty flat and peaked at 467 at 5500 rpms, but was making 450 at 3700 rpms. This was with no mufflers connected, but the headers used were smaller diameter than what I will be using. I will be using GTS headers and mufflers, so I realize I will sacrifice some of that horsepower to get the look and sound that I like.
Dennis