FYI, for those thinking of adding innercoolers and concerned about the added height, Whipple does make a low profile one that is combined with a new intake manifold. It only adds about 1" in height. They are expensive!!! $2900. When you add the cost of modifying a hatch though and the fact that it comes with the intake, its close to a trade off.

http://www.whipplesuperchargers.com/...sp?ProdID=1158

I had 741 crane roller in a 454 blown with very near 700hp at 5 lbs. Go ROLLER cam! The 540 recommendation will not work at all with your wiand 177's, but plenty of other ways to make power.Good Luck.

With your goal of 50-100hp in mind. I would change to a Crane 731 roller cam, up the boost and add a cooler.

The cam and boost increase to 7# will get you about 40-50hp. A cooler and a little more boost will probably give you another 30-50hp.

BTW, I've done the same cam in my 525sc and gained about 100rpms. I already had the smaller top pulley that pulls 7.5# of boost. Rejetted carb also. Probably a little rich, but has run great this way for the last 130hrs.

The stock pulley spins the 177sc at a 2 to 1 ratio for 5.5#'s of boost. The max rating for the 177 is like 12500rpms. You can go to a 2.5 ratio which is about what I'm at, but thats pushing the small blower and creates a lot of heat. At the 2.5 ratio at 5200rpms, you're spinning the blower at 13000rpms. It will get you about 7.5#'s of boost.

Griff, What jetting and power valves are you running ? Are you useing the stock 1050?

Stock 6.5 pv's and upped the jetting on the stock 1050. I think I ended up using 102 pri and 103 sec. for jets. Stock is 98's. It's probably a little rich, but has ran perfect.