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450 horsepower 318??
#1402082
03/13/13 05:47 PM
03/13/13 05:47 PM
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Joined: Jul 2012
Posts: 153
Plant city fl
70Dart499
OP
member
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OP
member
Joined: Jul 2012
Posts: 153
Plant city fl
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Thinking about swapping my bigblock for a SB in my Dart, and I was wondering, how hard would it be to make between 450 and 500 horsepower with a stock stroke 318? What heads, intake and cam would be best..
1970 Dart Drag Car
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Re: 450 horsepower 318??
[Re: 70Dart499]
#1402083
03/13/13 05:49 PM
03/13/13 05:49 PM
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Joined: Nov 2005
Posts: 15,126
85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,126
85086
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Is boost an option? 
56 Plaza 63 D100 step side 67 Coronet, 68 Roadrunner, 69 Super Bees, 69 Coronet 500 convertible, 70 Roadrunner Post, 79 D150 360, and a severe case of Mopar a,d,d
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Re: 450 horsepower 318??
[Re: dogdays]
#1402085
03/13/13 06:30 PM
03/13/13 06:30 PM
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Joined: Jul 2012
Posts: 153
Plant city fl
70Dart499
OP
member
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OP
member
Joined: Jul 2012
Posts: 153
Plant city fl
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Not interested in a power adder since I bracket race, but It's not a street car. I don't think I was clear, I was thinking of something with aftermarket heads, intake &pistons
Last edited by 70Dart499; 03/13/13 06:34 PM.
1970 Dart Drag Car
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Re: 450 horsepower 318??
[Re: Skeptic]
#1402087
03/13/13 06:47 PM
03/13/13 06:47 PM
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Joined: Jan 2003
Posts: 6,266
Renton Washington
Triple Threat
master
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master
Joined: Jan 2003
Posts: 6,266
Renton Washington
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First question would be why?
Secondly yes it can be done. My stroked 318 made 525+ There are more economical ways to make the power.
-Dustin
67 Dart, 9 second, 392" G3 Hemi
68 Barracuda 340 F/SA
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Re: 450 horsepower 318??
[Re: Streetwize]
#1402094
03/13/13 08:45 PM
03/13/13 08:45 PM
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Joined: Jul 2011
Posts: 977
Chicago
PurpleBeeper
super stock
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super stock
Joined: Jul 2011
Posts: 977
Chicago
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Maybe think a heavily stroked 360 with the best heads you can afford, the biggest cam you can tolerate and light weight internal parts? You start out 100hp in the hole switching from big block to small block. Sounds expensive... but definiteiy can be done.
70 Roadrunner convt. street car
440+6, NOS, 4-spd, SS springs
'96 Mustang GT convt. street car
'04 4.6 SOHC, NOS, auto, lowered
"Officer, that button is for short on-ramps"
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Re: 450 horsepower 318??
[Re: 70Dart499]
#1402095
03/13/13 08:48 PM
03/13/13 08:48 PM
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Joined: Feb 2009
Posts: 207
People's Republic of Mass.
Belvedere2
enthusiast
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enthusiast
Joined: Feb 2009
Posts: 207
People's Republic of Mass.
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Quote:
Quote:
I wouldn't limit myself to just a 318 if the only requirement is a smallblock..... but at least you didn't say you wanted to do it with a 273!
I honestly think a 340 would be cool since that's what's the car came with, but I don't think I'll be able to find a 340 block that's not really expensive
Depends on your budget. And if you live anywhere near me. I'll be selling my 340 soon. 406hp dynoed, 9.8comp runs on pump with a small cam, with W2 heads. Bump the comp bigger cam it'll easily run those numbers. Putting in my 380 this spring so it'll go or just end up sitting. PM if interested. 
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Re: 450 horsepower 318??
[Re: 70Dart499]
#1402096
03/13/13 08:59 PM
03/13/13 08:59 PM
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Joined: Jan 2003
Posts: 32,394
Quicktree
I Win
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I Win
Joined: Jan 2003
Posts: 32,394
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Quote:
Quote:
I wouldn't limit myself to just a 318 if the only requirement is a smallblock..... but at least you didn't say you wanted to do it with a 273!
I honestly think a 340 would be cool since that's what's the car came with, but I don't think I'll be able to find a 340 block that's not really expensive
where do you live? i know where you can find one 
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Re: 450 horsepower 318??
[Re: 70Dart499]
#1402097
03/13/13 09:00 PM
03/13/13 09:00 PM
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Joined: Oct 2011
Posts: 559
Idaho
LaRoy Engines
mopar
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mopar
Joined: Oct 2011
Posts: 559
Idaho
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Quote:
Thinking about swapping my bigblock for a SB in my Dart, and I was wondering, how hard would it be to make between 450 and 500 horsepower with a stock stroke 318? What heads, intake and cam would be best..
292ci/273, Indy 360X heads ported by LaRoy, Edelbrock Super Victor 2815, big solid roller, 93 octane, 462 HP
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Re: 450 horsepower 318??
[Re: 70Dart499]
#1402098
03/13/13 09:08 PM
03/13/13 09:08 PM
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Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
rickstershemi
master
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master
Joined: Jul 2006
Posts: 9,366
Lehigh Acres, Florida
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Quote:
Not interested in a power adder since I bracket race, but It's not a street car. I don't think I was clear, I was thinking of something with aftermarket heads, intake &pistons
Just my  but if your planning a serious bracket racing effort.....a big block, glide and as much tire as you can get under the car would be the best approach and way easier to maintain....just my opinion 
Rickster
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Re: 450 horsepower 318??
[Re: LaRoy Engines]
#1402101
03/14/13 07:18 AM
03/14/13 07:18 AM
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Joined: Jan 2005
Posts: 4,862
the frozen wastes...
Pale_Roader
Swears too much
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Swears too much
Joined: Jan 2005
Posts: 4,862
the frozen wastes...
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Quote:
Quote:
Thinking about swapping my bigblock for a SB in my Dart, and I was wondering, how hard would it be to make between 450 and 500 horsepower with a stock stroke 318? What heads, intake and cam would be best..
292ci/273, Indy 360X heads ported by LaRoy, Edelbrock Super Victor 2815, big solid roller, 93 octane, 462 HP
Hah! Why...???
I mean, thats damn cool, i love screamers, but with all the stroker hype out there, why would someone build a 462HP 273...???
Personally, i'd love to see this thread grow into some good examples. I'm also thinking about a stock stroke 318 for my next engine, and it'd need over 400HP too. I was fantasizing about Magnums though...
That 360 Magnum magazine build-up linked in my 360/383 thread made 455HP with Edelbrock Magnum heads and the usual stuff. That'd be about 400HP with a 318 Magnum... and there was nothing tricky about that engine and no porting in the heads yet. I think 450HP would be pretty easy with the same combo plus bigger (but not stupid) cam, and some simple head porting? Hmmm...
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