Re: Stock LOOKING 383 needs more HP
[Re: TrueTripleX]
#159570
12/01/08 02:08 PM
12/01/08 02:08 PM
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Joined: Jun 2006
Posts: 5,163 CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,163
CT
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496 stroker kit
440 Source Stealth heads or a good porting to your heads
DC .528
9.5:1 compression
850 CFM Edelbrock or Holley a minimum, if you want the stock Carter look its going to cost you some power but your best choice would be to find a 750 or a Carter that came off of a 440HP engine.
This would probably get you there.
If you dont want to stroke it youre probably SOL, 450 might be doable but 475 is a stretch on the street.
Last edited by GTX MATT; 12/01/08 02:17 PM.
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: Stock LOOKING 383 needs more HP
[Re: BradH]
#159573
12/01/08 02:33 PM
12/01/08 02:33 PM
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Joined: Jan 2005
Posts: 1,647 IL
71383beep
top fuel
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top fuel
Joined: Jan 2005
Posts: 1,647
IL
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I agree with stroking. You'll need it for that kind of hp. I would say aftermarket heads, stroked to a minimum 426 or larger, SD intake and an 850 Demon or Holley. make sure your compression is no less than 10:1 too. the SD intake is short and looks good when painted you can also keep the stock aircleaner. You'll probable NEED to have headers though which obviously aren't stock. IMHO it is easier to do this with a stroked 400 and externally they look the same. I am running 400 with mine and I can probably squeeze another 10 to 20 with easier mods like cam and heads mainly. But I doubt I could see 475 without pulling more CI's.
'73 GK6 Challenger Rallye - 340 4-Speed
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Re: Stock LOOKING 383 needs more HP
[Re: TrueTripleX]
#159576
12/01/08 08:32 PM
12/01/08 08:32 PM
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Joined: Aug 2006
Posts: 2,523 God's Country Maryland
GODSCOUNTRY340
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God's Country Maryland
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A '68 383 came with 906 heads. Get them off there and find a set of '67 915 heads, these are closed chambered and will raise your compression another point. Have them ported and install 2.14/ 1.81 valves. Be sure to clearance the tops of the cylinders where the valves open. You can do this yourself by using an old head gasket as a guide. Chamfer the bore out to match the gasket but only go 1/4" deep into the cylinder to stay above where the rings travel. Stealth heads don't look stock, as soon as you look in the area of the heat crossover at the center of the intake manifold, you're busted. Go with a solid lift cam and as stated above, find an aluminum intake and paint it. A 3800 stall converter will help too.
I love the smell of Deer guts in the morning, it smells like... VICTORY!
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Re: Stock LOOKING 383 needs more HP
[Re: TrueTripleX]
#159577
12/01/08 08:49 PM
12/01/08 08:49 PM
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Joined: Jun 2005
Posts: 1,021 Chesapeake Va
BobK
super stock
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super stock
Joined: Jun 2005
Posts: 1,021
Chesapeake Va
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How's this for relatively stock looking? Stroked 400 (now 470 ) Stealth heads, with port work, Edelbrock intake,
1964 Plymouth Fury x 2 1964 Plymouth Sport Fury
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Re: Stock LOOKING 383 needs more HP
[Re: BobK]
#159578
12/01/08 09:44 PM
12/01/08 09:44 PM
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Joined: Feb 2003
Posts: 21,318 Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
How's this for relatively stock looking? Stroked 400 (now 470 ) Stealth heads, with port work, Edelbrock intake,
Looks very stockish to me. Take a spare stock air cleaner, graft a drop-base onto it and the average car guy would not know the difference? Would it hold up to the toughest judges, of course not. But it would fool most regular joes.
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Re: Stock LOOKING 383 needs more HP
[Re: DaytonaTurbo]
#159579
12/01/08 10:37 PM
12/01/08 10:37 PM
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Joined: Jun 2006
Posts: 5,163 CT
GTX MATT
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Posts: 5,163
CT
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I dont think hes going to want the SD, I like them but I would never mistake one for stock myself. If youve got the air grabber style air cleaner it hides alot though. I think if you go with the big stroker kit to the 499 you can make your power with the .528 and a well ported set of 906s with the manifolds and stock intake as long as you give it enough CFM with something like the 850 AVS Edelbrock sells, an AVS Edelbrock on a MoPar is generally considered a stock replacement type deal, in fact any carb replacement on any MoPar is something I never think of as a true modification, its almost a tuning item. I like the Carters but they dont really make anything big enough for even a mild 440.
If you run manifolds go with the .528 if you use something off the shelf, its one of the best DC cams and it works well with manifolds from what I hear from alot of guys who know theyre stuff. My only big block had manifolds on it but it was a 440, different case. I like the look though and when I finally get a big block in the Satellite I'd be tempted to run them. Headers are just worth so much power though, on a stock 383 youre looking at 25+ horse for a decent set of cheap Hooker or Hedmans.
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: Stock LOOKING 383 needs more HP
[Re: BradH]
#159580
12/01/08 11:08 PM
12/01/08 11:08 PM
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Joined: Feb 2005
Posts: 4,316 Prospect, PA
BSB67
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Quote:
First question: HOW MUCH MONEY DO YOU HAVE TO SPEND???
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Re: Stock LOOKING 383 needs more HP
[Re: 71383beep]
#159583
12/02/08 01:26 PM
12/02/08 01:26 PM
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Joined: Feb 2003
Posts: 12,675 Columbia, CT
moper
I Live Here
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I Live Here
Joined: Feb 2003
Posts: 12,675
Columbia, CT
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well it doesnt look stock. but I ran 175hp plate on a stock 2bbl lower end in my C body for a couple years. Had a blast in it too... If I could just find a green 4dr Newport with green interior, black top, and AC. I miss the old barge.
more to the point, 475 from a 383 is very hard to do in stock apprearing form. I would start with a 400 and go larger stroke as mentionned. A 470 can make 475 pretty easy with stock looking stuff. Not stock looking or sounding, but stock looking.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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