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Old 05-10-2010, 04:26 PM
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forged 383

hi guys well am currently buying performance parts for my engine build as of right now i have...

350 4 bolt main non roller
performer rpm intake
Long tube headers
high volume water pump
engine and transmission oil cooler

the following are my next parts to buy:

roller rockers
double roller timing chain
lifters
carburator
aluminum cylinder heads
distributor
3.75 stroke crankshaft
pistons
camshaft

my questions are: i want to have atleast 500hp with no problems would anyone help me out to go in the right direction in choosing cam cylinder heads carburator???

will the cast steel crankshaft handle 500hp with no problems or do i need a forged one???

also would hipereutectic flat top pistons handle 500hp with no problems

is there any way i can use a roller cam in a non roller engine???

i have the funds to buy a part for right now so i just want to buy the right parts for the best combination i can get to get 500hp or a lil over

thanks in advance:

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Old 05-10-2010, 06:41 PM
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Yes, cast would work, for a while, I would look for a forged crank.
Same goes for hypers vs. forged.
Yes, you can use a roller cam, you just need retrofit lifters.
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Old 05-11-2010, 03:55 AM
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what would be a nice set of cylinder heads carb and roller cam for the performer rpm intake?

so will the steel cast crankshaft hold on with that kind of power???
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Old 05-11-2010, 06:22 AM
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What kind of budget do you have for cylinder heads?
Are you planning on running on pump gas or race gas, ethanol, what type of fuel?
500 HP 383 on pump gas probably won't happen, but if you're looking at race gas it can happen.
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Old 05-11-2010, 08:35 AM
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well i want for it to run on pump gas if i can get 450hp+ i would be more than happy i was looking in a set of heads part number 723-2180 on jegs
there 190cc 64 combustion chamber 2.02intake and 1.6exhaust valves

and for the cam i was looking into comp cams part number: Xtreme Energy XR282HR

and for a carburator i checking out the edelbrock 750cfm manual carb

and a steel cast crankshaft 3.75 stroke

hypereutectic flat top pistons 4.040

will this be a good combo to make those kind of hp 450-520???
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Old 05-11-2010, 08:36 AM
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I believe the Scat and Eagle cast cranks are rated up to 500 hp. Sounds like you want "at least" 500 hp. If you have the money, might as well go forged.

Use a retrofit roller camshaft.

Hypers should be fine.

If you want 500 hp out of your 383 and want to run pump gas, look into a set of 195 cc AFR heads. Check out the 383 503 hp combo at the top of this link.

http://www.airflowresearch.com/chevy_dyno.php


With those heads, 9.5:1 CR, and comp cams #12-433-8, you can reach your goal.

http://www.summitracing.com/parts/CCA-12-433-8/


I hope this helps.
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Old 05-11-2010, 08:52 AM
How fast is fast enough?
 
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With proper heads and either a different intake or a lot of work done to that one you can easily hit 500hp on pump gas... But you'll lose some driveability.

The cam should be your last decision, not one of your first. After you have everything else bought, measured, and assembled, then contact a good well known cam grinder and have a cam ground to match your parameters and engine.

If you want the most power possible then you need to forget picking your cam yourself and have a pro custom grind one for you. The cost is only an extra $50-$100 and the power difference can be very significant.

Things you will need for an easy 500hp:
900+cfm carb
1 3/4" long tube headers
200cc-ish heads that flow 260+ cfm
ported RPM intake or super vic intake (or equivalent)
10:1 compression


Tips that will help you along the way-
if you run on the small side (195cc) of cylinder head port volume i use long rods (6") if you run on the large side (215cc) then use short rods (5.7")
DO NOT CHEAP OUT ON VALVE TRAIN
Really, anytime you cut a corner just think of it as dropping 20hp off your potential- if you use a slightly mismatched carb, headers, and intake your looking at loosing 60 or so hp- your 500 just became 440ish.

Don't forget your drivetrain will need to be able to handle 500hp as well... So take your engine cost and double it to equal project cost.
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Old 05-11-2010, 09:57 AM
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i want to run between 1500-6500rpm

i already have the: 1 3/4" long tube headers

and my goal was to hit atleast 10:1 compression with flatop pistons

so would an edelbrock 750cfm carb be ok for 500hp???

also i have a choice on transmission i have 2 fully build for racing one is a th350 fully build with a 9" dacco torque converter with a 2,800+ stall and a 700r4 with a 12" b&m torque converter with a 2,300-2,500 stall
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Old 05-11-2010, 10:10 AM
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My combo that was ran on a simulator

Dude,

This is the combo i'm going with that was put thru a Sim.



383
3.750" Crank
5.7" Big beam rods
10:1 Comp.
Dart 200cc Int. runners 2.02/1.60 Iron heads (Platinum Iron Eagles)
CAM, .533" Int. and .555" ex. valve lift. Advertised duration is 288 Int. and 294 ex. Duration at .050" is 236 Int. and 242 ex. Ground on a 110 Lobe center. (Comp Cams juice roller 08-433-8)
1.6 rocker arms
EdelBrock RPM Air Gap
750 street HP doublepumper

Here are the results
RPM HP TQ
2000 136 358
2500 173 363
3000 220 386
3500 287 431
4000 356 467
4500 417 487
5000 469 493
5500 502 479
6000 512 448
6500 508 410

In afghanistan now..dropping this in my 66 Caprice when I get home.
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Old 05-11-2010, 10:15 AM
How fast is fast enough?
 
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Quote:
Originally Posted by Jkingof956
so would an edelbrock 750cfm carb be ok for 500hp???

also i have a choice on transmission i have 2 fully build for racing one is a th350 fully build with a 9" dacco torque converter with a 2,800+ stall and a 700r4 with a 12" b&m torque converter with a 2,300-2,500 stall
An edelbrock 750 will be fine as long as you don't mind leaving 20hp on the table.

And more than likely, neither stall will be sufficient for a 500hp 383.
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Old 05-11-2010, 10:17 AM
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Go with a DOUBLEPUMPER!!!
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Old 05-11-2010, 10:19 AM
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Quote:
Originally Posted by BigLeoRocks
Dude,

This is the combo i'm going with that was put thru a Sim.



383
3.750" Crank
5.7" Big beam rods
10:1 Comp.
Dart 200cc Int. runners 2.02/1.60 Iron heads (Platinum Iron Eagles)
CAM, .533" Int. and .555" ex. valve lift. Advertised duration is 288 Int. and 294 ex. Duration at .050" is 236 Int. and 242 ex. Ground on a 110 Lobe center. (Comp Cams juice roller 08-433-8)
1.6 rocker arms
EdelBrock RPM Air Gap
750 street HP doublepumper

Here are the results
RPM HP TQ
2000 136 358
2500 173 363
3000 220 386
3500 287 431
4000 356 467
4500 417 487
5000 469 493
5500 502 479
6000 512 448
6500 508 410

In afghanistan now..dropping this in my 66 Caprice when I get home.
thanks for the info
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Old 05-11-2010, 10:26 AM
How fast is fast enough?
 
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Quote:
Originally Posted by BigLeoRocks
Go with a DOUBLEPUMPER!!!

That does nothing for the flow of air...


There's nothing wrong with cutting corners, just don't expect it to be just as good as if you didn't. There are a lot of people running around with nice 425hp-ish engines that were built in their garage using cheap parts, and they still run fine and do what they need done...

And then there are engines that are built with performance as the number 1 goal while cost takes a back seat.

I build more of the first type as I have other things to spend money on, but I am aware of the difference.
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Old 05-11-2010, 10:37 AM
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really my goal is to run an 11 high or mid 11 on a 3rd gen t/a gta money is a lil hard am also working on my 99 trans am ls1 have a couple of bolt ons just need a custom tune also am working on my 86 camaro z28 and c10 lol thats why am using the cheap parts on this build
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Old 05-11-2010, 11:33 AM
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In my opinion edelbrocks are for looks. Go with a DP holley style carb. Who cares about gas mileage in yer hotrod? I didnt say anything about airflow...
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