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Old 02-27-2005, 02:36 PM
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Ideas of horsepower

Hiya Guys, am just building up a 383 for bracket racing, and living in a country where parts are scarce,( and bloody expensive), I'm trying to get an idea on how much power I'll expect from my configuration.
I have a 350 block, 4 bolt with main studs, eagle steel 3.75 " crank, eagle 5.7 rods, KB forged 11.5 pistons, Isky mega 304 cam, 256 degree at 50 thou, .525 lift, 108 lobe centre. Heads are dart Iron eagle slant plug, stainlass 2.05 inlet ,1.6 exhaust, Crane roller rockers, ratio 1.5 inlet 1.6 exhaust. Intake is Weiand Team G port matched, and carb is 750 cfm Race Demon.

Am fitting in an Australian built Torana for dragging, Nice little car , weights in at about 1950lbs all up, so hopefully will give me some fun and good times.
Allan

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Old 02-27-2005, 02:59 PM
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It will be at least 450 hp.
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Old 02-27-2005, 03:53 PM
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hp

I would say 410 hp. 450 hp would be too much.
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Old 02-27-2005, 04:31 PM
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Thanks for that Guys, was hopeing it would make 500, any ideas what I need to do to get up around there.
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Old 02-27-2005, 04:35 PM
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500 hp

220 heads
900 cfm carb
.650 roller
13.1 compression outta do it.
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Old 02-27-2005, 05:47 PM
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It should be around 475HP. Out of 383CID that is not hard. It may hit 500.

Chris
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Old 02-27-2005, 07:09 PM
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I'm with chris, that motor is 450-475 horse. Maybe with a 350 you'd have to build the crap out of it, but 383's make power pretty easily-

K
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Old 02-27-2005, 07:31 PM
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Quote:
Originally Posted by bracketeer
220 heads
900 cfm carb
.650 roller
13.1 compression outta do it.
Those Holley 900 HP carbs are a 750 with an 850 baseplate. They exagerrated their CFM ratings a lot. Don't be fooled.
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Old 02-27-2005, 10:10 PM
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Quote:
Originally Posted by killerformula
I'm with chris, that motor is 450-475 horse. Maybe with a 350 you'd have to build the crap out of it, but 383's make power pretty easily-
383s make more torque. HP only increases by 33 at 1 hp/ci.

I just run your numbers on desk top dyno and pulled 442 HP with a 180 cc head. You didn't specify which runner size.
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