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Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: moparpollack] #1055521
09/30/11 12:06 AM
09/30/11 12:06 AM
Joined: Nov 2006
Posts: 6,005
Reno, Nevada
NV69B7RR Offline OP
master
NV69B7RR  Offline OP
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Reno, Nevada
I'm still on the fence about what to do with the motor. Its #'s matching so I might rebuild it with a few performance mods (lighter pistons, roller cam), or set it aside an put something bigger and better in it...

Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: NV69B7RR] #1055522
09/30/11 10:31 AM
09/30/11 10:31 AM
Joined: Jan 2010
Posts: 1,992
midwest
6
68427vette Offline
top fuel
68427vette  Offline
top fuel
6

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midwest
congrats,, i was thinking about buying it,, finding such a good car to start with, and a 4 sp,, is hard to find,, awsome you got it!!

Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: moparpollack] #1055523
09/30/11 12:19 PM
09/30/11 12:19 PM
Joined: Nov 2003
Posts: 3,106
Ridgeland Wi
M
mopars_1 Offline
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Ridgeland Wi
Im really jelious of the Duster.. littereally my dream car. If it were me, Id build the original motor with a few performance upgrades.


1971 Plymouth Duster 340 auto
1937 Plymouth PT50
1969 Dodge Dart Swinger 340 4 speed
2013 Ram laramie 2500 hemi
2008 Harley FLSTSB springer
Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: mopars_1] #1055524
09/30/11 08:09 PM
09/30/11 08:09 PM
Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms Offline
Mr Wizzard
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Spokane Washington
I'd reccomend saving the original engine in a bag and building another 340 or even a 360. Add a stroker crank (night and day difference in power and looks and sounds totally stock). If you want to save a few bucks you can use the original heads, intake, carb, accessories, etc. on the new engine and just save the numbers shortblock. Two reasons I reccomend this. #1 you will always have a numbers matching car (which is exceedingly rare with 340 stick 71 Dusters) and #2 you can bag on it guilt free when it's done. Nobody will know it's not the original engine unless you tell them, they all look the same on the outside.

*I hope you are getting a bunch of pics of your forward radiator support blackout brfore getting it stripped? From all angles if you haven't, not much good info on that.

Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: ScottSmith_Harms] #1055525
09/30/11 09:30 PM
09/30/11 09:30 PM
Joined: Aug 2004
Posts: 3,333
MARYLAND
69Cuda340S Offline
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Cool car. Yeah I would put that numbers block aside and drop a small block stroker in there then go burn some rubber. I keep my numbers matching standard bore original 340 engine in dry storage where its safe.

Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: 69Cuda340S] #1055526
09/30/11 10:12 PM
09/30/11 10:12 PM
Joined: Nov 2006
Posts: 6,005
Reno, Nevada
NV69B7RR Offline OP
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NV69B7RR  Offline OP
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Reno, Nevada
68427 & Mopars1- Thanks! It was my dream Duster too when I first saw it on ebay. Unmolested #'s matching red 340 4spd 71 Dusters are very hard to find and I knew finding another one like it would be hard to do, if not impossible. The fact I was going to pick it up and pay for it in person really sealed the deal with the seller. Its the last car I'm going to restore for awhile and is truly a keeper in my mind.

It goes to the media blaster sunday morning!!

As far as the motor goes I'm undecided right now. In the garage is the #'s 340, a low mile 360, and a dual quad 512. So I have some options. I've been so busy with work and getting the car ready for paint that I haven't thought too much about what the final goal will be. Other than being able to drive it anywhere.

Scott, yes I've taken lots of pics with my good camera. It clearly was sprayed upward from the bottom, although the latch tray support is a little confusing. My guess would be the core support, fender wells and lower pinch welds were painted at the same time.

Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: ScottSmith_Harms] #1055527
10/01/11 12:31 AM
10/01/11 12:31 AM
Joined: Nov 2005
Posts: 15,118
85086
moparpollack Offline
Lil Herman
moparpollack  Offline
Lil Herman

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Posts: 15,118
85086
Quote:

I'd reccomend saving the original engine in a bag and building another 340 or even a 360. Add a stroker crank (night and day difference in power and looks and sounds totally stock). If you want to save a few bucks you can use the original heads, intake, carb, accessories, etc. on the new engine and just save the numbers shortblock. Two reasons I reccomend this. #1 you will always have a numbers matching car (which is exceedingly rare with 340 stick 71 Dusters) and #2 you can bag on it guilt free when it's done. Nobody will know it's not the original engine unless you tell them, they all look the same on the outside.

*I hope you are getting a bunch of pics of your forward radiator support blackout brfore getting it stripped? From all angles if you haven't, not much good info on that.





Would it really be worth is for a 340 duster? Restoring a car is expensive as it is already adding the cost of another motor just puts you deeper in the hole. I'm facing the same issue with my 383 roadrunner and I can't justify the expense. A buddy of mine did this with his 64 GTO and the motor trans and rear end have been sitting around collecting dust for 20+ years. If you do sell the car then the next guy will have to tear the car apart if he wants the numbers matching motor in it. Sorry for the hi-jack but holding these cars with kid gloves is getting too expensive.


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
Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: moparpollack] #1055528
10/01/11 01:59 AM
10/01/11 01:59 AM
Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms Offline
Mr Wizzard
ScottSmith_Harms  Offline
Mr Wizzard

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Spokane Washington
Quote:

Would it really be worth is for a 340 duster? Restoring a car is expensive as it is already adding the cost of another motor just puts you deeper in the hole. I'm facing the same issue with my 383 roadrunner and I can't justify the expense. A buddy of mine did this with his 64 GTO and the motor trans and rear end have been sitting around collecting dust for 20+ years. If you do sell the car then the next guy will have to tear the car apart if he wants the numbers matching motor in it. Sorry for the hi-jack but holding these cars with kid gloves is getting too expensive.






Every owner has a unique set of personal budget and other circumstances that will vary their experiences owning cars and parts.

What does NOT vary is the VERY small number of remaining numbers matching 71 340 manual trans Dusters & Demons existing today, and the value difference between a non numbers matching vs a numbers matching example CERTAINLY outweighs the cost of a replacment short block 340 or 360.......In most cases many times over.



Quote:

Scott, yes I've taken lots of pics with my good camera. It clearly was sprayed upward from the bottom, although the latch tray support is a little confusing. My guess would be the core support, fender wells and lower pinch welds were painted at the same time.






Ok, cool. If in doubt take more pictures, pictures are cheap/free. Once that car is stripped the details will be gone forever. You won't have anything but those pictures to provide details, I can't emphasize it enough, the more the merrier.


Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: ScottSmith_Harms] #1055529
10/01/11 02:37 AM
10/01/11 02:37 AM
Joined: Nov 2005
Posts: 15,118
85086
moparpollack Offline
Lil Herman
moparpollack  Offline
Lil Herman

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Posts: 15,118
85086
Quote:

Quote:

Would it really be worth is for a 340 duster? Restoring a car is expensive as it is already adding the cost of another motor just puts you deeper in the hole. I'm facing the same issue with my 383 roadrunner and I can't justify the expense. A buddy of mine did this with his 64 GTO and the motor trans and rear end have been sitting around collecting dust for 20+ years. If you do sell the car then the next guy will have to tear the car apart if he wants the numbers matching motor in it. Sorry for the hi-jack but holding these cars with kid gloves is getting too expensive.






Every owner has a unique set of personal budget and other circumstances that will vary their experiences owning cars and parts.

What does NOT vary is the VERY small number of remaining numbers matching 71 340 manual trans Dusters & Demons existing today, and the value difference between a non numbers matching vs a numbers matching example CERTAINLY outweighs the cost of a replacment short block 340 or 360.......In most cases many times over.

So the price difference is roughly $3-3.5k plus the labor and time of having two engines X2? If you were to sell you still would have to lug around the short block or engine block. Unless you were running in the fast or pure stock races I can't see the need to build another engine.


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
Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: moparpollack] #1055530
10/01/11 10:18 AM
10/01/11 10:18 AM
Joined: Jan 2003
Posts: 42,714
Spokane Washington
ScottSmith_Harms Offline
Mr Wizzard
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Spokane Washington
I didn't asign a value difference in dollars because it's impossible to do, what i'm saying is that there WILL be a value difference and it will be substantial, and there will be an even bigger demand difference because there are many people looking for a numbers matching car that will not compromise and will pass entirely if one number doesn't match. The cost of a 340/360 shortbock assembly can vary between practically free and a few grand, a small price to pay to ensure and preserve a cars #'s status and pass on the gamble of running the original block. Yes, it's rare to break a stock block in a street application but it does happen, 340's are thin wall blocks and I've seen many of them crack just from hot or cold weather. IMO it's a no brainer decision, but to each his own.

Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: ScottSmith_Harms] #1055531
10/01/11 10:34 AM
10/01/11 10:34 AM
Joined: Nov 2005
Posts: 15,118
85086
moparpollack Offline
Lil Herman
moparpollack  Offline
Lil Herman

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85086
Quote:

I didn't asign a value difference in dollars because it's impossible to do, what i'm saying is that there WILL be a value difference and it will be substantial, and there will be an even bigger demand difference because there are many people looking for a numbers matching car that will not compromise and will pass entirely if one number doesn't match. The cost of a 340/360 shortbock assembly can vary between practically free and a few grand, a small price to pay to ensure and preserve a cars #'s status and pass on the gamble of running the original block. Yes, it's rare to break a stock block in a street application but it does happen, 340's are thin wall blocks and I've seen many of them crack just from hot or cold weather. IMO it's a no brainer decision, but to each his own.




But if you did have to assign a value it would have to be pretty big because of all the work involved. Building a car and not having the motor built and installed has to take away from the value. If you had to tear the car apart once it was painted and detailed to add the original motor wouldn't make sense. Additionally if you were going to do the car why not do the motor at the same time.


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
Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: moparpollack] #1055532
10/01/11 11:37 AM
10/01/11 11:37 AM
Joined: Jan 2003
Posts: 8,135
New Mexico
UCUDANT Offline
Troll Hunter
UCUDANT  Offline
Troll Hunter

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Posts: 8,135
New Mexico
EDIT that's my stashed away numbers matching block so I agree with Scott. Sleep better and build an engine you can beat on worry free

6850823-matchNo340.jpg (229 downloads)
Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: UCUDANT] #1055533
10/01/11 11:55 AM
10/01/11 11:55 AM
Joined: Nov 2005
Posts: 15,118
85086
moparpollack Offline
Lil Herman
moparpollack  Offline
Lil Herman

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Posts: 15,118
85086
Quote:






Looking good!


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
Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: moparpollack] #1055534
10/02/11 04:31 PM
10/02/11 04:31 PM
Joined: Nov 2006
Posts: 6,005
Reno, Nevada
NV69B7RR Offline OP
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Reno, Nevada
Its finally at the media blaster!!

I completely filled my camera's memory card getting any last details of overpsray, etc. It should be done in 2-3 weeks and will go straight to the painters. Feels like one hurtle is finally cleared. The debate above is why I'm undecided on what to do motor wise. Decisions, decisions...

Time to clean up & organize the garage and get started on the sub assemblies.

Ohh and get the honey do's done...

Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: NV69B7RR] #1055535
10/02/11 06:19 PM
10/02/11 06:19 PM
Joined: Jan 2003
Posts: 8,135
New Mexico
UCUDANT Offline
Troll Hunter
UCUDANT  Offline
Troll Hunter

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New Mexico
Good luck and keep up posted on your component resto's too

Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: ScottSmith_Harms] #1055536
10/02/11 06:29 PM
10/02/11 06:29 PM
Joined: Jan 2008
Posts: 1,300
Washington
19cuda73 Offline
pro stock
19cuda73  Offline
pro stock

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Posts: 1,300
Washington
Quote:

I'd reccomend saving the original engine in a bag and building another 340 or even a 360. Add a stroker crank (night and day difference in power and looks and sounds totally stock). If you want to save a few bucks you can use the original heads, intake, carb, accessories, etc. on the new engine and just save the numbers shortblock. Two reasons I reccomend this. #1 you will always have a numbers matching car (which is exceedingly rare with 340 stick 71 Dusters) and #2 you can bag on it guilt free when it's done. Nobody will know it's not the original engine unless you tell them, they all look the same on the outside.

I agree did this with my 340 picked up a completed rebuilt unit for 2k and it has all the upgrades. yet it looks stock. The original number matching is in a dry storage container.

Keep us posted on your progress. Looking nice and a great car to start with..


1966 Charger 383 4 speed (Black with Red interior)
1973 Cuda 340 4 speed (Lemontwist)
1972 Corvette
Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: 19cuda73] #1055537
10/02/11 09:32 PM
10/02/11 09:32 PM
Joined: Jan 2003
Posts: 43,540
Round Lake Beach, Illinoisy
Rhinodart Offline
Rhinotruck
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Rhinotruck

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Round Lake Beach, Illinoisy
Just put a 340 in to be built to stock specs. Hope everyone is aware that stock compression 340 pistons are no longer available in any size! I am having to go with aftermarket forged pistons which are far more expensive than original style. I will be looking for good used or new stock style pistons at every swap meet for awhile...


The funny thing about science is that if you change one miniscule parameter you change the entire outcome to the way you want it.

JB Rhinehart, Realist

A-Body's RULE!
Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: Rhinodart] #1055538
10/02/11 11:17 PM
10/02/11 11:17 PM
Joined: Nov 2006
Posts: 6,005
Reno, Nevada
NV69B7RR Offline OP
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Thanks for the info Rhino, I didn't know that.

I'm hoping to match the engine color the best I can. I was able to really get some good samples from the back of the pass side valve cover and the throttle cable bracket.

I was also doing some 8 3/4 CSI and washing it with Dawn, a rag , and water in a spray bottle trying to find some of the factory graffit marks. I found several but lost the light for pics, will post tomorrow.

6853385-Orange.JPG (251 downloads)
Last edited by NV69B7RR; 10/02/11 11:17 PM.
Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: NV69B7RR] #1055539
10/03/11 11:48 PM
10/03/11 11:48 PM
Joined: Jan 2003
Posts: 20,541
Eagle, Idaho
Neil Offline
The Doctor is in.
Neil  Offline
The Doctor is in.

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Eagle, Idaho
If you just want something fun to drive, and don't want to spend the extra money to build a 4" crank engine, just build a nice running 360 and dress it up like a 1971 340.

Re: 71 Duster 340 4spd resto, from ruster to duster! [Re: NV69B7RR] #1055540
10/03/11 11:49 PM
10/03/11 11:49 PM
Joined: Nov 2006
Posts: 6,005
Reno, Nevada
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With some Dawn, water, fine steel wool, and lot of elbow grease I was able to reveal some unseen details on my 8 3/4. None of these stamps/ marks were visible except for the faint "A" on the rear housing. I was very happy with the results and there should be more once I get the springs off.

6855330-G009rr.JPG (277 downloads)
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