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 Post subject: V8 in 69 dart!??
PostPosted: Thu May 16, 2013 12:14 pm 
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4 BBL ''Hyper-Pak''

Joined: Wed Nov 21, 2012 8:46 pm
Posts: 36
Location: Edinburg tx
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Would a v8 84 360 long block with a 727 tranny fit in my 1969 dart that recently had a slant six? Help I got a good deal on the price n wonder if it will work:/


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 Post subject: Yes, but...
PostPosted: Thu May 16, 2013 12:24 pm 
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Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9714
Location: Salem, OR
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You will need:

Better torsion bars
Better front brakes if not disc equipped.
New rear axle
Conversion engine mounts to convert to the V-8 (or if doing the hard way, a V-8 K-member with 1967-1972 motor mounts).

-D.Idiot


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 Post subject:
PostPosted: Thu May 16, 2013 12:33 pm 
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Supercharged
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Joined: Mon Jan 15, 2007 5:05 pm
Posts: 3767
Location: Black Diamond, WA
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and a shorter drive line...

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74 Swinger, 9.5 comp 254/.435 lift cam, 904, ram air, electric fans, 2.5" HP2 & FM70 ex, 1920 Holley#56jet, 2.76 8 3/4 Sure-Grip, 26" tires, 25+MPG


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 Post subject: Lol...
PostPosted: Thu May 16, 2013 12:39 pm 
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Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9714
Location: Salem, OR
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Quote:
and a shorter drive line...
Oh, and a new slip yoke for that as 727 is bigger than 904...

-D.idiot


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 Post subject:
PostPosted: Thu May 16, 2013 12:53 pm 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13095
Location: Fircrest, WA
Car Model: 76 D100
And a new radiator, and new exhaust, and possible engine wiring mods, and possibly different accessory brackets, and other greebly bits....

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 Post subject:
PostPosted: Fri May 17, 2013 5:48 am 
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Turbo EFI
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Joined: Fri Jul 16, 2004 5:22 am
Posts: 1134
Location: Carrollton, TX
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And a slant six site probably isn't the best place to ask about replacing a slant six with a V-8...

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 Post subject: Re: Yes, but...
PostPosted: Sun May 19, 2013 6:58 am 
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EFI Slant 6
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Joined: Sun Mar 02, 2008 8:18 am
Posts: 257
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WHY would you do that? Is it that important to be like everyone else?
Quote:
Would a v8 84 360 long block with a 727 tranny fit in my 1969 dart that recently had a slant six? Help I got a good deal on the price n wonder if it will work:/

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 Post subject:
PostPosted: Sun May 19, 2013 7:09 am 
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Turbo EFI

Joined: Sat Feb 19, 2005 9:57 am
Posts: 1818
Car Model:
WHY STOP with a small block....I know of a few darts with 383s and 440s in them also ...dont forget to add the frame connectors...or you will twist body


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 Post subject:
PostPosted: Mon May 20, 2013 9:21 am 
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TBI Slant 6
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Joined: Tue Apr 10, 2012 9:31 am
Posts: 176
Location: Central Oklahoma
Car Model: 75valiant custom
well, this one certainly started off well...


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 Post subject:
PostPosted: Mon May 20, 2013 9:43 am 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13095
Location: Fircrest, WA
Car Model: 76 D100
These are are valid answers to the initial question. Swapping a v-8 in place of a slant six is more complex than it sounds, especially if you want the car to be reliable and safe to drive.

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Casually looking for a Clifford hyperpak intake for cheap.


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 Post subject: Also...
PostPosted: Mon May 20, 2013 4:14 pm 
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Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9714
Location: Salem, OR
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Also the 360 even in 2 barrel format will provide about 1/2 the mileage the slant six did, so a $150 long block and tranny combo will be shelling out about 9-13 mpg on a regular basis...

So what's cheap now will not pay back in the long run...

:roll:

-D.Idiot


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 Post subject:
PostPosted: Mon May 20, 2013 6:05 pm 
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Supercharged
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Joined: Sat Feb 16, 2008 1:25 pm
Posts: 5611
Location: Downeast Maine
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The just wondering department:

Why use last century’s technology? This is the V8 road I would take:
Just drop in a Gen III Hemi and drive train with all the electronic fix’ins, and get better fuel economy than 53 year old slant architecture is capable of, and tire roasting performance… Oh, and the complexity of this project will be exponentially several notches over an old 360 transplant… Or, for exceptional fuel sipping, light, powerful combo, dump in a Pentastar V6 with an 8 speed.

How do I know this, my 4200 pound 300C AWD gets 24 mpg on the interstate, my Dart’s best is 18.5 mpg at a tick over 3000 lb. The above same 2+ ton tank with a Pentastar in it runs into the 30 mpg range.

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 Post subject:
PostPosted: Mon May 20, 2013 6:13 pm 
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4 BBL ''Hyper-Pak''

Joined: Wed Nov 21, 2012 8:46 pm
Posts: 36
Location: Edinburg tx
Car Model:
Reason being is I was going to fully rebuild my engine but came out my block had a little crack my the main barings so any parts needed everyone HAVE AT IT! 956 289 0575 engine was running before took apart for rebuild! Also have the 727 tranny auto I jst so happend to find a cheap 360 with a 927 transmission will I need I need a new drive shaft? How do I know how long?


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PostPosted: Mon May 20, 2013 6:46 pm 
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Joined: Tue Oct 29, 2002 8:27 pm
Posts: 9714
Location: Salem, OR
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Quote:
Or, for exceptional fuel sipping, light, powerful combo, dump in a Pentastar V6 with an 8 speed.
This is the real killer is the late motor mounts are not like the older motor mounts, I think E-berg wrote an interesting article on it and some now has conversion mounts but again $$$...I also read same author's late hemi swap and although straight forward, lots of wire chasing is required.
Quote:
How do I know this, my 4200 pound 300C AWD gets 24 mpg on the interstate, my Dart’s best is 18.5 mpg at a tick over 3000 lb. The above same 2+ ton tank with a Pentastar in it runs into the 30 mpg range.
That's and apples and oranges comparison...convert your slant to EFI and put an OD transmission behind it and then you can square up the comparison...given what Lou has done( and I'm sure there's more in there), both would be equal in mpg.

:lol:


-D.Idiot


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 Post subject:
PostPosted: Mon May 20, 2013 7:23 pm 
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4 BBL ''Hyper-Pak''

Joined: Wed Nov 21, 2012 8:46 pm
Posts: 36
Location: Edinburg tx
Car Model:
Since my car is a 69 dart but the engine is a 84 360 when I get parts what year would I put dart 360 or the van 360 I'm being told my exhuast manifolds won't fit:/ how do I know what manifolds to get or will they fit smtng to do with the steering column:/??! ANYONE!


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