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Old 12-19-2012, 06:09 PM
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looks like a 383

OK, so without getting my balls busted too bad for being a pain in the rear....
I have a somewhat organized plan on a somewhat limited budget and want opinions, and input....and of course the classic....how much HP.... And yes, as i know I will be told the proof will be in the ET but its still fun to estimate, and make changes where possible.
Stock 4 bolt block
Eagle 383 rotating assembly, pn#B13405E030, (flat top with 5cc 2 valve relief) 758$
Machine work and assembly $740
Dart SHP 200 heads PN# 127322, (these will get ported) 64cc chambers $1000
Lunati 60141 233/241 at 0.050, 504/525 ( or more with 1.6) $345
PP dual plane typhoon intake $200
1" 5/8 long tube headers, 3" to single chamber flowmasters with turndowns, zero bends
Modded HEI
Comp roller rockers either 1.5 or 1.6, $200
Holley 750dp ( I already have)
94 octane fuel always
TH350 rebuilt and shift kit
B&M 3000 stall
9" with 456 gear
31/18.5 Sportman pros
3700# race weight.
Can't think of anything else....HP? Torque?
ET?

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Old 12-19-2012, 06:12 PM
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high 12s/low 13s depending on hook/gears
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Old 12-19-2012, 06:35 PM
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Quote:
Originally Posted by bygddy View Post
OK, so without getting my balls busted too bad for being a pain in the rear....
I have a somewhat organized plan on a somewhat limited budget and want opinions, and input....and of course the classic....how much HP.... And yes, as i know I will be told the proof will be in the ET but its still fun to estimate, and make changes where possible.
Stock 4 bolt block
Eagle 383 rotating assembly, pn#B13405E030, (flat top with 5cc 2 valve relief) 758$
Machine work and assembly $740
Dart SHP 200 heads PN# 127322, (these will get ported) 64cc chambers $1000
Lunati 60141 233/241 at 0.050, 504/525 ( or more with 1.6) $345
PP dual plane typhoon intake $200
1" 5/8 long tube headers, 3" to single chamber flowmasters with turndowns, zero bends
Modded HEI
Comp roller rockers either 1.5 or 1.6, $200
Holley 750dp ( I already have)
94 octane fuel always
TH350 rebuilt and shift kit
B&M 3000 stall
9" with 456 gear
31/18.5 Sportman pros
3700# race weight.
Can't think of anything else....HP? Torque?
ET?
How are you gonna use this? Is it set up?

Less weight.

You can get an Edelbrock Performer RPM for less than $200. If this is a race only deal a single plane and more cam to match the heads and CR.

1-3/4" header primaries.

Lunati Voodoo Camshafts 10120704 - SummitRacing.com is $165. You should shop somewhere else than where you're getting prices from now.
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Old 12-19-2012, 06:35 PM
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What suspension you gonna use?
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Old 12-19-2012, 06:39 PM
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Estimate 11.14:1 static compression ratio. Cam closes intake valve at 46.5 degrees ABDC @0.050" tappet lift. Dynamic compression ratio will be 9.11:1. Should be a strong race gas motor.
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Old 12-19-2012, 07:07 PM
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Quote:
Originally Posted by techinspector1 View Post
Estimate 11.14:1 static compression ratio. Cam closes intake valve at 46.5 degrees ABDC @0.050" tappet lift. Dynamic compression ratio will be 9.11:1. Should be a strong race gas motor.
With 0.010 in the hole, 0.040 head gasket I show 10.85 with a slightly large. 050 squish...which I know isn't ideal, but on 94? I'm not adverse to more cam to help the cause.
The heads are available with 72cc as well so that can be fixed if needed.
Weekend toy, occasional strip, mostly something to abuse....its a nova front clip and narrowed rear with leaf springs and lots of tire. Weight savings isn't real possible without glass fenders etc which is over my cash limit....
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Old 12-19-2012, 07:09 PM
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Quote:
Originally Posted by bygddy View Post
OK, so without getting my balls busted too bad for being a pain in the rear....
I have a somewhat organized plan on a somewhat limited budget and want opinions, and input....and of course the classic....how much HP.... And yes, as i know I will be told the proof will be in the ET but its still fun to estimate, and make changes where possible.
Stock 4 bolt block
Eagle 383 rotating assembly, pn#B13405E030, (flat top with 5cc 2 valve relief) 758$
Machine work and assembly $740
Dart SHP 200 heads PN# 127322, (these will get ported) 64cc chambers $1000
Lunati 60141 233/241 at 0.050, 504/525 ( or more with 1.6) $345
PP dual plane typhoon intake $200
1" 5/8 long tube headers, 3" to single chamber flowmasters with turndowns, zero bends
Modded HEI
Comp roller rockers either 1.5 or 1.6, $200
Holley 750dp ( I already have)
94 octane fuel always
TH350 rebuilt and shift kit
B&M 3000 stall
9" with 456 gear
31/18.5 Sportman pros
3700# race weight.
Can't think of anything else....HP? Torque?
ET?
Small edit....cam is a Lunati Solid if that helps.
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Old 12-19-2012, 07:14 PM
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Quote:
Originally Posted by cobalt327 View Post
How are you gonna use this? Is it set up?

Less weight.

You can get an Edelbrock Performer RPM for less than $200. If this is a race only deal a single plane and more cam to match the heads and CR.

1-3/4" header primaries.

Lunati Voodoo Camshafts 10120704 - SummitRacing.com is $165. You should shop somewhere else than where you're getting prices from now.
In canada, pricing tends to be significantly higher...the PP intake has proven to work very well and I wouldn't say there is a big difference between that and the edelbrock, the cam your looking at is hyd, I'm looking at a solid so they are pricier...
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Old 12-19-2012, 07:48 PM
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Quote:
Originally Posted by bygddy View Post
With 0.010 in the hole, 0.040 head gasket I show 10.85 with a slightly large. 050 squish...which I know isn't ideal, but on 94? I'm not adverse to more cam to help the cause.
The heads are available with 72cc as well so that can be fixed if needed.
Weekend toy, occasional strip, mostly something to abuse....its a nova front clip and narrowed rear with leaf springs and lots of tire. Weight savings isn't real possible without glass fenders etc which is over my cash limit....
OK, 11.14 was based on looking at pistons on the Keith Black site. I'll run the real numbers for you and see where you are....
4.03" bore x 3.75 stroke.....
(.7854) x 4.03 x 4.03 x 3.75 x 16.387 = 783.8 cc's
chambers = 64 cc's
piston deck height 4.03" x 0.010"....
(.7854 x 4.03 x 4.03 x .010 x 16.387 = 2.1 cc's
piston crowns = 5 cc's
Default head gasket for SBC w/ aluminum heads is Fel-Pro 1003....9.1 cc's
Total of 5 values....864.0 cc's
Deduct cylinder volume and find....80.2 cc's
Divide 864.0 by 80.2 and find 10.77:1 static compression ratio. DCR will be 8.82:1. Should work with 94 if the fuel is fresh.

Here's the cam card, so that others can play along.....
http://www.lunatipower.com/CamSpecCa...rtNumber=60141

If the chambers are very efficient, you probably won't need more than about 34 degrees total timing. With that cam, I might set the initial at the crank at 20 and add 14 at the weights. There are systems available to retard the timing during cranking, or you can interrupt the power line to the coil and splice in a momentary off switch that you would hold down while cranking the motor with the key or start switch. When the crank is whizzin' let go the momentary switch and the key switch and the motor will be running without any undue pressure on the starter or ring gear. Depending on the stall speed of the converter, you might want to just dial in all 34 degrees all the time and eliminate any centrifugal.

Last edited by techinspector1; 12-19-2012 at 08:02 PM.
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Old 12-19-2012, 08:03 PM
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Quote:
Originally Posted by techinspector1 View Post
OK, 11.14 was based on looking at pistons on the Keith Black site. I'll run the real numbers for you and see where you are....
4.03" bore x 3.75 stroke.....
(.7854) x 4.03 x 4.03 x 3.75 x 16.387 = 783.8 cc's
chambers = 64 cc's
piston deck height 4.03" x 0.010"....
(.7854 x 4.03 x 4.03 x .010 x 16.387 = 2.1 cc's
piston crowns = 5 cc's
Default head gasket for SBC w/ aluminum heads is Fel-Pro 1003....9.1 cc's
Total of 5 values....864.0 cc's
Deduct cylinder volume and find....80.2 cc's
Divide 864.0 by 80.2 and find 10.77:1 static compression ratio. DCR will be 8.82:1. Should work with 94 if the fuel is fresh.

Here's the cam card, so that others can play along.....

Cam Spec Card :: Lunati Power
Lol.....thank you sir.....always a gentleman.....what are you thinking for the good numbers lol.....HP!
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Old 12-19-2012, 08:09 PM
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Quote:
Originally Posted by bygddy View Post
Lol.....thank you sir.....always a gentleman.....what are you thinking for the good numbers lol.....HP!
I'd be thinkin' 500/500 or better.
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Old 12-19-2012, 08:12 PM
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And yah, I used the wrong cam info off the top
Solid Lunati
241/249
520/540
110 LS
106 CL
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Old 12-19-2012, 08:16 PM
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I'd be thinkin' 500/500 or better.
Are you kidding me?.?.???? On pump? For under 4g's.....any idea how happy that would make me lol......would using 1.6 rockers help the cause assuming the valve train is up to it? And that I can work the heads to support the lift?
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Old 12-19-2012, 08:46 PM
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440HP +/-15 HP 110MPH 1/4 Not enough gear ratio. Not crazy about the head choice. There are better choices for $1K.
Flow master mufflers suck. Pick better mufflers and you will go faster.

12.7@110. can be 12.0 solid high 11's @115+ with better choices and more gear. Same money.
Watch the final assembled compression ratio. A little too much is a LOT TOO MUCH. Kinda like tighening the end cap on a pipe bomb, or hanging your toes off the edge of a cliff.

a real 10.5:1 gets it done on 94 octane. I like to keep the measured cr under 11:1 actual for street motors.

If you do want a real deal 500hp 383, thats not it. but a few changes will get you there , for the same or very near the same money. ref: 500hp ='s mid 11's@116-117MPH in that car.
you will need a better converter and more gear.

Last edited by F-BIRD'88; 12-19-2012 at 08:55 PM.
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Old 12-19-2012, 08:57 PM
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But its a good running 440HP runner as you got it. Sell the Flowmasters to someone you don't like.
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