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Old 06-07-2010, 06:28 AM
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How Do I Get 500hp

I Have A Sbc Chevy, 350 Std Bore. I Would Like To Bore It Out .040 Over. I Have A Scat Rotating Assy In The Engine All Ready With Forged Flat Tops. What I Would Like To Know Is What Pistions, Hydr. Roller Cam ( Have Roller Lifters Now), Heads, And Intake. I Would Use To Get 500hp. With 11.1 Compression Or Lower. I Have 3000 Stall Converter. And 4.11 Gears I Would Like To Stay The Same.

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Old 06-07-2010, 06:51 AM
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Run just about any combination on "Virtual Engine Dyno Pro" and you'l get it. What a $$$ joke for software.
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Old 06-07-2010, 07:00 AM
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1.21 giga-watts???!!!!
 
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Main intended use of car?
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Old 06-07-2010, 07:01 AM
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Quote:
Originally Posted by novacrazy2007
I Have A Sbc Chevy, 350 Std Bore. I Would Like To Bore It Out .040 Over. I Have A Scat Rotating Assy In The Engine All Ready With Forged Flat Tops. What I Would Like To Know Is What Pistions, Hydr. Roller Cam ( Have Roller Lifters Now), Heads, And Intake. I Would Use To Get 500hp. With 11.1 Compression Or Lower. I Have 3000 Stall Converter. And 4.11 Gears I Would Like To Stay The Same.
3.750" crank
Airflow Research 195 Street heads
10.16:1 static compression ratio
RPM or Stealth intake mounting a 750 carb
Lunati 60104 cam timing. This part no is a flat tappet hyd. cam. Use the same timing in a roller hydraulic. Just call up Lunati and have 'em grind it.
http://www.lunatipower.com/CamSpecCa...rtNumber=60104
1 3/4" headers, full length
Makes 502 hp @6000, 506 ft/lbs @4500

3.750" crank
Edelbrock 77619 Victor Jr. heads
10.4:1 static compression ratio
RPM or Stealth mounting a 850 carb
CompCams 12-900-9 solid roller cam
http://www.compcams.com/Cam_Specs/Ca...?csid=310&sb=0
1 3/4" headers, full length
Makes 578 hp @6500, 531 ft/lbs @5000

3.750" crank
Brodix CIK-210 heads
10.2:1 static compression ratio
RPM or Stealth mounting a 850 carb
CompCams 08-432-8 hydraulic roller
http://www.compcams.com/Cam_Specs/Ca...?csid=189&sb=0
1 3/4" headers, full length
Makes 537 hp @6000, 516 ft/lbs @5000
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Old 06-07-2010, 10:33 AM
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I Want To Use My Rotating Assy. With Diff. Pistions
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Old 06-07-2010, 02:12 PM
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Quote:
Originally Posted by novacrazy2007
What I Would Like To Know Is What Pistions, Hydr. Roller Cam ( Have Roller Lifters Now), Heads, And Intake. I Would Use To Get 500hp. With 11.1 Compression Or Lower.
I was just answering your question. What you have and what you want to use has nothing to do with my answer.
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Old 06-07-2010, 02:17 PM
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put a blower on it
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Old 06-07-2010, 07:43 PM
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Going to be hard to do with only 350 cubes and hydro roller and 11-1 or less compression limitations.

Can be done with a solid flat tappet, good aluminum heads, 7500rpm and 10.7-1 compression.

Can be done with hydro roller and good heads but needs 13-1 comp to make up for the hydro rollers inability to rev over 6500 well.

Solid roller with decent iron heads and 10-1 comp could do it at 6800-7000 rpm.

383 makes it a bunch easier, and at lower rpm too.

Performer RPM type intake, or Victor Jr/Super Victor type. 750-950 carb.

Pistons - Mahle, KB Forged/ICON, Probe, SRP, Speed-Pro/TRW, Wiseco, Ross, JE, Diamond, CP - how much do you want to spend?, all are good, some are better.

Heads - AFR, Profiler, Trick Flow, Brodix IK, Dart Pro 1 or IE, EngineQuest Iron, RHS ...something 195-210cc intake runners.......There are some cheaper castings like ProComp and Patriot that could work but you need to know a fair amount of knowledge of head set-up tolerances and how to port a decent job and pick/fit parts.

The hydro roller cam requirement is hurting this combo most of all.
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Old 06-07-2010, 07:59 PM
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1.21 giga-watts???!!!!
 
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You can't. Maybe a mild shot of nitrous.
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Old 06-08-2010, 01:04 AM
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I think its difficult to do with hyd. roller, but you can't say impossible. INFACT, you can't even say the hyd. roller lifters are RPM limited to 6500RPM!
Most times you're right, hyd. rol. will max at 6200...6500 if you're good.
But how do LS7's rev to 7000? they have hyd. roller lifters...you just have to have the correct spring pressure... And they sell those same lifters (which retrofit into all 1987-00 orig hyd. roller blocks) for just over 120 dollars. Which brings me to my next point, he never said what his budget was...So you can't tell him that it's IMPOSSIBLE.

Now that I'm done playing devil's advocate, the advice to use forced induction or more cubes is very good advice.
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Old 06-08-2010, 04:40 PM
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is this for the street for the strip or for street/strip. if it will see more street time than anything else i think you best bet will be to either lower your power goals or to stroke the engine out because a 350 with 500hp will not be that much fun on the street as you will have to be turning 3500rpm before you really start going anywhere in a hurry. but if this is for racing or even for street/stip then i think your best bet would either be to go with a solid cam weither it be flat tappet (recomended more for the street/strip) or roller (recomended more for the strip). even if you were to lower your goal numbers to say 440-460 this would be far easier to accomplish with the hyd roller cam and the compression you have mentioned wanting to use. not to mention that if you do get the 350 to make 500hp your cam will end up having a power band of more like 3500-6500 making it so you will need a stall around 4000 rpm as well as you'll be shifting around 6800-7000rpm
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Old 06-08-2010, 04:58 PM
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Take a look at AFR's dyno page. AFR did it a couple of ways, but with a 383. Not so much with a 350. 450-460 hp, but not 500 hp.

http://www.airflowresearch.com/chevy_dyno.php
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Old 06-09-2010, 04:40 AM
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Yep, AFR definately the way to go IMO. Early 2009 they came out with newly designed line of SBC heads which now all flow more; infact each heads flows more than the older designed one of a bigger runner (ex. the new 180 flows more than the old 195 but with the throttle responce of a 180 still!).
Those dyno results, if accurate show you what they were able to do with a 230 dur hyd rol with only 9.5 comp on aluminum heads. bump the comp 1 point, that's a couple hp (not much, but better suited for that cam and should increase low RPM driveability [aka....FUN...LOL]).
Also, that dyno was with 1 5/8 longtubes. Go with 1 3/4 that will be worth a few more ponies (I measured the exhaust ports on the new 180 and it was just a shade over 1 5/8. Granted most air is in the center but still!)
Lastly on the AFR deal, those tests were with the torque monster 180 which still has big flow. You could step up to the 190 vortec style which has even more flow and not that much bigger runner. Should help the motor breathe just a little more and a little higher in the RPM's if you can get up there.

Either way, those dyno results showed a 180cc runner on a 9.5 comp,with aluminum heads, 350ci making 450hp and 470lb/ft (405 lb/ft at 2500RPM!!!!!!!!).
I say build that combo and spray a tiny shot of NOS if you ever want the 500HP.
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Old 06-09-2010, 06:57 AM
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Thanks For All The Info. I Think I'll Go With The Afr Heads. And A Comp Hydr. Roller. Cause I Already Have The Roller Lifters. I Also Have A Sniper Nos Kit To.
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Old 06-10-2010, 08:22 AM
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Which Heads

Afr 180's Or 195's? Sbc 357 11.1 Compressioon, Comp Hydr. Roller. .520 Int. And .540 Exh. Weiand Stealth Air Strike Intake.
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