Author Topic: Ball park cost to get this 340 running?  (Read 1094 times)

Offline Glennster

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Ball park cost to get this 340 running?
« on: April 11, 2009 - 06:39:34 AM »
I looked at a 71 340 motor yesterday. It's a complete motor with 215 heads(?), one cylinder needs to have a sleeve put in it. There is some slight rust in the other cylinders, boring to .020'' or .030'' over would supposedly take care of that. It comes with the original cast crank and a steel crank that has been machined. I don't know much about this stuff, so I really need some help.
  I've got a new carburetor and intake that would be a great fit for this motor, but I'd like to get an idea of the total cost to get this to the point where I could drop it in the Challenger.
  The guy wants $800 for all the goodies......
1. Is that a decent price for this motor?
2. What would it cost to get her running at around 350 HP?
THANKS!




Offline Katfish

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Re: Ball park cost to get this 340 running?
« Reply #1 on: April 11, 2009 - 07:41:23 AM »
I would think you're better off buying a crate motor.  Too many unknowns with a block that needs a sleeve, what else might be wrong.

Offline moper

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Re: Ball park cost to get this 340 running?
« Reply #2 on: April 11, 2009 - 08:36:47 AM »
Well, it depends on your location and feelings. IMO, they have an unknown block core, two crank cores (the cast is not original), and a set of heads. That's a lot of coin IMO for wht you're getting. I just bought an entire '72 cast crank 340, never been apart, complete intake to pan w/the exh manifolds for $500 with the convertor for the cast crank. So I might say keep looking. You have a rebuild budget around $3K for a stock type rebuild that would give you 350hp. Add another $1K for a performance build with more potential. Look for oily std bore blocks. If it's rusty, you never know why it was pulled and left. Rebuilt shortblocks get between $500-$1K around here depending on the year. I wouldnt pay more than $300 for the parts you list in that shape.

Offline Bullitt-

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Re: Ball park cost to get this 340 running?
« Reply #3 on: April 11, 2009 - 12:32:30 PM »
 Here's a 360 ready to go for $1,000.  in GA.... 

http://atlanta.craigslist.org/pts/1095113219.html
 
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Offline acudanut

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Re: Ball park cost to get this 340 running?
« Reply #4 on: April 11, 2009 - 01:06:02 PM »
Here's a 360 ready to go for $1,000.  in GA.... 

http://atlanta.craigslist.org/pts/1095113219.html

I think he wants a 340.  I would guess around 3 grand.

Offline Moparal

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Re: Ball park cost to get this 340 running?
« Reply #5 on: April 11, 2009 - 04:30:17 PM »
The guy wants to much. Keep your patience, and keep looking

Offline 71chally416

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Re: Ball park cost to get this 340 running?
« Reply #6 on: April 11, 2009 - 04:49:05 PM »
 :iagree:  He isn't even close with that price.  :grinno:
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Offline Chryco Psycho

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Re: Ball park cost to get this 340 running?
« Reply #7 on: April 11, 2009 - 09:30:44 PM »
it will be more than 3k to fix it & build it as well

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Offline acudanut

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Re: Ball park cost to get this 340 running?
« Reply #8 on: April 11, 2009 - 10:11:35 PM »
 The real cost depends on the Machine shop rates. :2cents: 

Offline Stacked440

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Re: Ball park cost to get this 340 running?
« Reply #9 on: April 11, 2009 - 10:54:35 PM »
sleeving a block is a last resort in my book.  get a different motor :2cents:
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Offline 440mike

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Re: Ball park cost to get this 340 running?
« Reply #10 on: April 12, 2009 - 02:34:54 AM »
we have sleeved blocks were i work and it is not bad as long as you leave a step at the bottom for the sleeve to sit on when it gets pressed in.
also, make sure to do a new rebore and hone because the press on the sleeve destorts the cylinders beside it.

Offline 72bluNblu

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Re: Ball park cost to get this 340 running?
« Reply #11 on: April 12, 2009 - 05:42:47 PM »
it will be more than 3k to fix it & build it as well

 :iagree:

I'm in the process of rebuilding a 340, and while I bought a short block and then had to buy the rest of the cores $3k is the minimum it will likely cost, especially with all the machine work needed on that one.

I bought my '68 forged crank 340 short block for $280. It was .030 over, but not rusty. I had to go .060 over on it, didn't clean at .040. No idea what the "215" heads are about, and I'm guessing if its a standard block that "should" be able to clean at .030 it had to have some kind of significant failure if it needs a sleeve.  Sleeving it isn't a big deal if its done right and that was the only thing it needed. Just because the guy says it will clean at .020 or .030 doesn't mean it will, I can just about guarantee he's just guessing. Mine was supposed to be fine with just another .010" (.040 total)...

I'd pass on it unless you can talk him down.  :2cents: