550-600 hp sbc

[mlr1026]

Ok, here's the scoop. I have a 385 cid sbc, 6" rods, 58cc corvette heads (1.94 I & 1.50 E valves) making 10.4:1 compression. The cam is comp. 08-422-08 hyd roller, gross valve lift is .495I & .502 E with 218I and 224E duration. I'm running a holley stealth ram FI system. I'm looking to get 550-600 hp out of this engine. I've thought about supercharging/turbo charging it but, I can't make up my mind. Looking at what I have what changes would you make to acheve that range in hp? I would like to spend $2-3,000 at the most. PLEASE HELP!!!!!!
--- I'm running eagle steel crank, I-beam 6" rods & forged pistons. Horese power now is up known I'd say 450ish from what the engine builder says.The trans I'm going to be running is tko600 and the rear is a dana 44 from a vette. just to complete the picture.

[Gordz32]

what kinda power is the engine making now? what internals r u runnin ( Pistons/rods/crank). If you go forced induction I think you'll wanna lower the compression. A Little more info about the motor would be helpful.

[V8bug]

pick up the new issue of HOTROD, they built a 383 with new AFR heads and a comp roller cam and made 615hp @6800rpm.

If it was me I would buy a halfway descent set of heads with huge cc chambers and drop your CR. Then buy a turbo from somewhere with a good rep. (probibly cost you $1000-$1500) and make your own headers and all the plumber to save some $. Single turbo wih a good tune will yeild 600+ all day long and be drivable, and last alot longer then a high compression rpm motor, IMO

[Carbo]

Ok, here's the scoop. I have a 385 cid sbc, 6" rods, 58cc corvette heads (1.94 I & 1.50 E valves) making 10.4:1 compression. The cam is comp. 08-422-08 hyd roller, gross valve lift is .495I & .502 E with 218I and 224E duration. I'm running a holley stealth ram FI system. I'm looking to get 550-600 hp out of this engine. I've thought about supercharging/turbo charging it but, I can't make up my mind. Looking at what I have what changes would you make to acheve that range in hp? I would like to spend $2-3,000 at the most. PLEASE HELP!!!!!!
--- I'm running eagle steel crank, I-beam 6" rods & forged pistons. Horese power now is up known I'd say 450ish from what the engine builder says.The trans I'm going to be running is tko600 and the rear is a dana 44 from a vette. just to complete the picture.

I was looking into this same scenario myself with a 383 not to long ago. 550-600 hp is can be achieved but with some upgrades. First off, you'll want a forged rotating assembly (crank, rods, pistons). With that much power you'll definitely want a solid bottom end and the only way to go is forged. You're going to need a very good set of aluminum heads. And last you may want to think about a solid roller cam rather than a hydraulic. It sucks adjusting valve lash but you're going to get more HP from a solid cam than a hydraulic one. (Besides I think a solid sounds better, but that's just me).

Keep in mind when reaching that much top end on a small block, you're going to lose driveability as well as low end torque. It all depends on what your plans are with the car (racing, weekend cruiser, daily driver, etc.). Also, depending on who's doin the building, be concerned on how much initial timing they're dialing into the engine to reach those hight HP numbers. If it's too much it will be hard starting when the motor is warm. And you won't have fun trying to start the car after sitting for only 10 minutes in your buddy's driveway. Just remember, these are a few things just to get you started.

If you're going with forced induction, there's a lot of money to be spent. There's a lot to think about when you're talking big numbers from a small block. Good luck.

[ProdigyCustoms]

You have the bottom end, but you will need to change heads to drop compression. I did not do all the critical math, but in quick numbers ut of my head, Assuming you are really at 10.4 compression now, you would drop compression to about 8.5 or so with a head change with 72CC Chambers. Also, you could get some bigger valves in those heads to allow the blower to get some air in there. Those Corvette heads are tiny, great for torque, but not HP or blower friendly.

We can set you up with a blower and camshaft after your head change and see low 550 to 600 pretty easy. You will blow your budget buy $1000 though with heads, blower and camshaft. But it will be a bad beotch!

As for driveability, no problem with driveability with a blower motor. The camshaft will be a nice wide LC smooth cam, and not all that big!

When your ready, look us up,

[email protected]

[mlr1026]

OK, I'm in!!! Tell me what kind of heads to get or if you want set me up with what I need and give me an actual number. I can scan you the paper work on the long block if you need it for research. Too bad your in Fla. & I'm in NJ. I'd drop the entire thing off.

[ProdigyCustoms]

We can meet half way! Call me tomorrow

four zero seven 832 1752