I was wondering whats the most hp people have seen out of a 525sc blower and inner cooler

wel i am running a very similar setup to the 525sc. I am making 551 hp at 5300rpms @ 5psi of boost. I am not running an intercooler. I'd think i could pick up another 50 with a pulley change and an intercooler.

I ran a 7 lb pulley that was supposed to put ot 575 hp with no intercooler. But I always ran 100 octane.
Gary

6.5 psi on the boost and changed the cams to roller...580hp

I was thinking 510 CI stock ported heads, crane cam # 651, 8.5 compression.
The 525sc supercharger + innercooler 5 to 7 psi of boost should make 675 to 725 hp.
What do you guys think ?

i've heard thata 177 or 174 blower is too small for anythign over 454. BUT then again i've also heard that it will work just fine on bigger cube engine. I've heard far more its too small BUT the peopel who said its fine have both been engine biulders.

You need at least a 250 blower for that many CI's. Still, you probably make a max of 650 or so HP.

B4M, I'd be curious to here more about what exactly you did. I'm going to be doing a top end freshening this Spring and would like to add some HP without going crazy.

What cam did you use???
Timing changes???
Top pulley size you changed to???
Carb Jetting changes???
Fuel Octane???
Did you dyno it??? If so 580hp at what rpm???

Thanks.

That 651 cam is awfully big for a 509. I'm using it in my 540's and it's a little big there. Your lower compression will make it idle very poorly and unless you use dry exaust, it will revert badly. Frank (The Preacher) from COPS uses it in his 588's with big blowers making about 900hp. I'd go with the 741 and a larger blower.

MTM,

The Apache I was looking at had 525SC's that were upgraded. He was making 625 hp supposedly. We could always call and ask. I believe Falcon built them.

Garry was also building quite a few motors like that and was making 600 hp.