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Old 09-11-2006, 06:00 PM
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good 383 stoker supercharged combo?

Just wondering on your thoughts. This will be my first supercharged engine,
Here's the setup i was thinking about.

383 .030 4 bolt block
Eagle forged 4340 383 crank.
5.7 forged h-beam rods.
aluminum heads 72cc chambers and 215 cc intake runners. 2.05 in. 1.60ex.
speed pro blower pistons 8.32:1cr part #844-L2441F30.
weiand 6-71 blower, but im not sure if i should go for the 8-71, this will be a street car too.
comp cam hydraulic flat tappet, Grind: 284 Lift: .507''/.525'' RPM Range: 2800-6800.
MSD Flat-Top Pro-Billet Distributor .
MSD Boost Timing Master.
JEG'S 120 GPH Electric Fuel Pump.
2 600cfm holley supercharger carbs.
I would assume that i would need some kind of fuel regulator too, but im not sure.
possibly some nitrous, for when im at the drag. I got a free kit, just not sure on the specs of it yet.
Also just wondering, would this setup be ok just for now with just nitrous if i couldn't afford the supercharger right away. I had a buddy that built a motor for a supercharger but never got around to buying the supercharger. The motor has alot of power, and he just used nitrous when he was at the track.

let me know how you guys think this would run. Thanks alot, let me know if i left anything out.
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Old 09-11-2006, 06:56 PM
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Quote:
Originally Posted by 73camaro
Just wondering on your thoughts. This will be my first supercharged engine,
Here's the setup i was thinking about.

383 .030 4 bolt block
Eagle forged 4340 383 crank.
5.7 forged h-beam rods.
aluminum heads 72cc chambers and 215 cc intake runners. 2.05 in. 1.60ex.
speed pro blower pistons 8.32:1cr part #844-L2441F30.
weiand 6-71 blower, but im not sure if i should go for the 8-71, this will be a street car too.
comp cam hydraulic flat tappet, Grind: 284 Lift: .507''/.525'' RPM Range: 2800-6800.
MSD Flat-Top Pro-Billet Distributor .
MSD Boost Timing Master.
JEG'S 120 GPH Electric Fuel Pump.
2 600cfm holley supercharger carbs.
I would assume that i would need some kind of fuel regulator too, but im not sure.
possibly some nitrous, for when im at the drag. I got a free kit, just not sure on the specs of it yet.
Also just wondering, would this setup be ok just for now with just nitrous if i couldn't afford the supercharger right away. I had a buddy that built a motor for a supercharger but never got around to buying the supercharger. The motor has alot of power, and he just used nitrous when he was at the track.

let me know how you guys think this would run. Thanks alot, let me know if i left anything out.
What is your goal for HP.

Make sure the snout of the crank is cut for extra key way for the drive pulley. And make sure the cam is the proper grind for a blower application and the more boost you run the more valve spring you should have as the extra boost tends to keep the valves from closing. I would think a 6-71 blower would be your best choice for the street.

If your using an 010 block it may be wise to have the cylinder walls sonic tested for the proper thickness and maybe opt for splayed caps so all the power is mot being applied to just the main webbing as splayed caps pull on the webbing and the pan rail making a good foundation for some higher HP levels.

We build a few blower engines using a 8-71 SSI blower and if your thinking of going to a 8-71 you will have to run a offset dist. as the blower will extend over the dist. hole as we have build our own mag drive on the front of the engine as we use a 44 amp mag as these engines which are injected and run on alky and both are raised cam tunnel blocks one is a Brodix 9.500 deck as we use a 6.300 aluminum rod with BBC writ pins. And we are using the Buick high port heads.

Here is a pic of the front of the engine with the mag drive set up we built.


Here is a pic of the short block
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Old 09-11-2006, 08:22 PM
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thanks for the help. Ill deff. go with the splayed caps and have the extra key way cut when i get the crank, a engine machine shop can do that right?
For power ill be looking for over 600hp with lots of torque. What kind of hp and torque do you think i can expect around?
I forgot to leave this out, not sure if it helps but the rear end has 4.11's.
The cam is a blower/nitrous cam.
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Old 09-11-2006, 09:13 PM
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Quote:
Originally Posted by 73camaro
thanks for the help. Ill deff. go with the splayed caps and have the extra key way cut when i get the crank, a engine machine shop can do that right?
For power ill be looking for over 600hp with lots of torque. What kind of hp and torque do you think i can expect around?
I forgot to leave this out, not sure if it helps but the rear end has 4.11's.
The cam is a blower/nitrous cam.
Before you do any ting have the cylinder walls sonic tested to make sure you have a good peice before you start as we sonic test every block that comes in the shop.

I would really hate to guess on the results of this engine.
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Old 09-13-2006, 03:42 PM
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thanks, I deff. get it sonic tested. How much does this normaill cost?
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Old 09-13-2006, 06:25 PM
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I'm not familiar with the SSI blower, but have a Weiand 8-71 on my 383 - MSD's small diameter cap billet distributor fits nicely, plenty of clearance.
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Old 09-13-2006, 08:07 PM
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Quote:
Originally Posted by 73camaro
thanks, I deff. get it sonic tested. How much does this normaill cost?
We charge 40 dollars for that procedure
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Old 09-13-2006, 08:26 PM
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Quote:
Originally Posted by 68NovaSS
I'm not familiar with the SSI blower, but have a Weiand 8-71 on my 383 - MSD's small diameter cap billet distributor fits nicely, plenty of clearance.
We have never used a Weiand 8-71 as I don't think for our application that it make the power the SSI blowers do as we send these back every 2 years to have the blowers dynoed and to check how they are performing. And over the years on any of the high end 8-71 blowers we have had to use an offset dist.
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Old 09-13-2006, 08:32 PM
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You must be looking in my garage. I am building a blower motor right now that is almost identical to what you described. 1 st thing special order that crank with the double key already cut. Let Eagle do it. It cost about $30.00 extra and only took an extra day to get. I am building a 350 not a 383. I think that piston # is for a 350 with a 5.7 rod. I am not positive without going to the shop and looking. If I am correct, (and I might not be) those pistons won't work with those 5.7 rods and a 3.75 stroke. Just double check before you order that stuff. You can bet the blower drive hub from Big Al's Toys for $89.00. I got mine from BDS for $125.00. Then found Big Al.
I talked to several guys that are running a summit cam that works really good in a street blower motor.
http://store.summitracing.com/partde...5&autoview=sku or http://store.summitracing.com/partde...5&autoview=sku

I have 2 edelbrocks for mine and the 6-71 kit from Weiand.
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Old 09-14-2006, 04:36 PM
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Thanks RPM. i'll save some money going throug Big Al's. The pistions say there for sbc, 327-383ci supercharged or turbo engines are for 4.030 bore engines. It's crazy how much these parts cost I probably wont get the blower till spring or summer. How much power do you think this engine will make?
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Old 09-14-2006, 04:46 PM
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how much nos are you going to spray?
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Old 09-14-2006, 04:54 PM
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maybe 100-200 at the track.
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Old 09-14-2006, 05:01 PM
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How much power do you think this engine will make?

That depends on how much boost you make. That kit comes with a 34 pulley and a 38 pulley. They interchange from the crank and blower. With the 34 on the bottom and 38 on the blower that is about 10% underdrive and is supposed to make 6-8 lbs of boost. That should make about 580 hp. swap the pulleys and it will make it 10% overdriven. About 700 hp. Now all of this is from desktop dyno programs. Mine is going in a pro street t bucket. About 1500 lbs a dana 60 with 4.10 gears and 20" wide Firestone tires on the back. It should be a fun ride.
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Old 09-14-2006, 05:05 PM
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yeah sure does sound fun. Mines goin in my 73 camaro, i was in one with a 6-71 blower and well....i cant wait until mine is done.
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Old 09-14-2006, 05:06 PM
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Quote:
Originally Posted by 73camaro
yeah sure does sound fun. Mines goin in my 73 camaro, i was in one with a 6-71 blower and well....i cant wait until mine is done.
Hers is a link to that hub

http://bigalstoybox.com/pully.htm

They are is in Conn also. Might be close to ya.
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