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Old 03-21-2012, 12:53 PM
tko tko is offline
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383 stroker

hey guys i am new for this thing and i am wondering if there is anyone out ther willing to help me ... OK hear is the thing i am trying to build 1978 corvette 383 strocker and i don't know what kind carburetor to good to use with my engine setup i 1) SCAT Rotating assembly, forged steel.
2) PBM connecting rods CR5701 SBC 5.7" I-beam
3) Heads- Early 90's corvette. Flows 235cc @ 6000rpm.
4) Comp cam- part # 12-450-8. Adv dur: 286/286. Dur @ .050 230/230. Lobe separation 110. Valve lift .560/.560
5) PowerForce harmonic damper
6) Crane Cams Rocker Arms part # 11744-16. Energizer rocker arms 1.5 ratio with 3/8" studs
7) Comp Cams CS Retro Hydrolic roller lifter adapter part #853-16
8) Comp Cams push rods part #7609-16. CS 7.3. 5/16"Magnum
9) Edelbrock high volume aluminum water pump. Part # EDL-8812
10) Edelbrock Intake Manifold part #7516. Performer RPM Air-Gap Vortec
11) MSD Pro-Billet distributor part #85551
12) MSD Ignition control. 6A part #6200
13) MSD High Performance Blaster Coil. Part # 8202
14) Hooker Headers- Ceramic side pipeshave
15) 700r4 transmission
***** and wanna know how much estimated hp would be with this specs

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Old 03-21-2012, 05:49 PM
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Quote:
Originally Posted by tko
hey guys i am new for this thing and i am wondering if there is anyone out ther willing to help me ... OK hear is the thing i am trying to build 1978 corvette 383 strocker and i don't know what kind carburetor to good to use with my engine setup i
1) SCAT Rotating assembly, forged steel.
2) PBM connecting rods CR5701 SBC 5.7" I-beam
3) Heads- Early 90's corvette. Flows 235cc @ 6000rpm.
4) Comp cam- part # 12-450-8. Adv dur: 286/286. Dur @ .050 230/230. Lobe separation 110. Valve lift .560/.560
5) PowerForce harmonic damper
6) Crane Cams Rocker Arms part # 11744-16. Energizer rocker arms 1.5 ratio with 3/8" studs
7) Comp Cams CS Retro Hydrolic roller lifter adapter part #853-16
8) Comp Cams push rods part #7609-16. CS 7.3. 5/16"Magnum
9) Edelbrock high volume aluminum water pump. Part # EDL-8812
10) Edelbrock Intake Manifold part #7516. Performer RPM Air-Gap Vortec
11) MSD Pro-Billet distributor part #85551
12) MSD Ignition control. 6A part #6200
13) MSD High Performance Blaster Coil. Part # 8202
14) Hooker Headers- Ceramic side pipeshave
15) 700r4 transmission
***** and wanna know how much estimated hp would be with this specs
Why aren't you running the rods that come with the rotating assembly?
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Old 03-21-2012, 06:13 PM
tko tko is offline
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I bought it like that .....
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Old 03-21-2012, 11:26 PM
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cam might be too big for those heads but youll be alright. as far as carb goes, holley 4150 600cfm or 650cfm. 700s would be fine but over kill, them heads are probly 1.95s. my 73 vette has 2.02 heads with a .510 comp cam and i run a 650 holley 4150. the performance is perfect. great throttle response. i also run hooker side pipes and a air gap intake.
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Old 03-21-2012, 11:32 PM
tko tko is offline
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How much hp do you think will put out
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Old 03-21-2012, 11:42 PM
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prob around 400hp......but who cares bout horsepower!!! its TORQUE what you want brother. what will get you of that line. torque is all you need in the city, towing, or 1/4 mile strip. these companies are selling heads, cam etc. by telling you how much TOP END HORSEPOWER there giving. but what they dont tell you is that your torque will start at 35k rpm
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Old 03-21-2012, 11:49 PM
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You will need to fully port those L-98 90's corvette heads (#113 castings) to get that flow.
The hot ticket is to use the 2.00" x 1.56" LT-4 valves and give them a generous porting. Cylinder head valve guide boss machining us required to support the .560" lift.

These heads work very well when properly prepped.
You want use a dished piston with these heads on a 383

Get a 9.5" 245MM 3200 stall w/ lockup for the trans.
www.converter.com
www.converter.cc

use a 750cfm carb

These heads do not use a vortec style intake manifold.
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Old 03-22-2012, 04:49 PM
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IMHO if you are spending that much money on a motor and all knew HP parts then why are you going with a set of heads that was put on a motor ment for 275hp. yes you could get some porting/valve work done to them, but even after you spent all that money on machine work you would still end up with a set of moderately performing heads. really the only time that porting a set of older heads is more benificial than buying a new set of heads is when you are porting them your self. you could spend about 1000.00 on a set of really decent DART 200cc platinum heads, or RHS ProAction heads, or if your budget allowed 1200.00 then go after a set of Brodix IK200 heads or DART Pro-1 heads. Yes they will cost more than rebuilding, porting, and doing valve work will (avg cost around 500-600) but i garrentee you that money will be well spent.

dont cheap out on your heads.

as far as a carb i would recomend a Holley 3310 750vac sec carb.
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