In need of an education..340 vs 360.

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To the posters above who keep perpetuating the mythical 340 and all it's greatness, I say thank you. When I go to sell the 340 that's in my dart later this year, it's people like you that keep the prices up high. I will use the money that I've gained from people who've drank from the 340 kool aid cup to build my 408 using a roller 360 block that I bought earlier this year.

And yes, I was speed shiftin' a 340 four speed Duster 30 years ago...
 
BrianT said:
To the posters above who keep perpetuating the mythical 340 and all it's greatness, I say thank you. When I go to sell the 340 that's in my dart later this year, it's people like you that keep the prices up high. I will use the money that I've gained from people who've drank from the 340 kool aid cup to build my 408 using a roller 360 block that I bought earlier this year.

And yes, I was speed shiftin' a 340 four speed Duster 30 years ago...
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Yeah and I had my 73 340 auto Charger Rallye in high school. It ran well, but an equal 360 would have left it's ***. Some people can't be told a damned thing.
 
BrianT said:
To the posters above who keep perpetuating the mythical 340 and all it's greatness, I say thank you. When I go to sell the 340 that's in my dart later this year, it's people like you that keep the prices up high.
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Naw, I got all my 340's for cheap, lol.
 
I remember by buddy putting a 69 340 in a 1982 dodge ram back about 20 years ago and I tried him in my (then factory stock) lil red express across the local causeway....to my surprise (and many spectators money) I won by 2 truck lenghts, twice in a row (along with several ss454's in the early 90's)....of course I realize its one example, but my point is the 340 is good motor but it also came in a lightweight a-body, dont underestimate the torque of a 360

if you have a cool swinger or 70 duster, hell ya the 340 is the way to go, but most people on here it seems, build a 360 when they swap for a high horse stroker.
 
moparmanestock said:
Both engines are great performers. It boils down to how fast you want to go, and how big your budget is. I have both engines. Right now I am running a Mopar 380HP 360 short block, which is 9:1 cast piston, cast crank. On it I have the $500 Indy Aeroheads stock 340 castings with 2.02/1.60 valves and no machine work. The cam is the Mopar .508 hydraulic flat tappet. M1 SP intake, Holley 750 DP, MSD Digital 6 ign. This car, on the chassis dyno puts 300HP to ground at 5400, 314 TQ at 4600. Car is all steel, with 6pt rollbar. Car weighs about 3150 with me in it. On pump premium gas, the car runs 11.60s shifting at 5800. It will run 11.90s shifting at 5000. The 360 makes lots of torque, there is no need to buzz them that high, only maybe emotional need. This entire engine was brand new, from carb to pan was about $2700 including ignition. This is my second season of racing it.
I built my car to race in Stock Elim some day, with a 340. However since there are so many issues running against some of the newer stockers, I am going to do a 408/415 instead and go super street. Same ETs but cheaper engine.
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2700 Ito the 360 and it has 380 hp ? My 340 makes 413 hp 398 tq built to stock specs . All that was done was a bit of cleaning up the heads ,new stock spec pistons and a mild cam . So the op can have a 400hp 340 without putting in the money he would need to get the 360 to 400hp . How can spending close to 3 grand to make less hp and tq be advised ?
 
BrianT said:
What's not to like? Big displacement small blocks that make gobs of tire frying torque?!? Yes, please.
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The wear out faster. I'd rather do a forced induction then a stroker, but that's just me.
 
We use to build the 340s with trw flat top pistons, brown racer cam 510 lift 488 der. mill heads 30thosands shaved intake torker 340, 780 dual pump dual feed ,with 4 speed and 488 dana. 10.4 qt mile. this combo makes 12.5 -1 compression. balanced right it will out its own head lights. now I race a 68 440 rb block in a 68 post a body
 
jerry6 said:
2700 My 340 makes 413 hp 398 tq built to stock specs . All that was done was a bit of cleaning up the heads ,new stock spec pistons and a mild cam.
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Ok.
 
Google Herb McCandless 360. Enough said.
 
This is an interesting discussion, especially for me since I made the decision to put a 340 in my 73 Duster. I thought about a 360 since they were easier to find, but I decided I had to have a 340 because that's what would have come in it in 73. I took a chance on a motor at Carlisle last year and paid $850 for a 73 340 motor that was mostly complete. Not knowing then what I know now (and that still isn't much of anything), I didn't need most of the stuff that came with it. It came with all of the throw away things (like pistons and cam and stuff). At least I got heads, a crank, an oil pan, and the caps out of the deal. I have an intake, but we're going to put a more modern one on when it all gets said and done. Sometimes I wonder if I should have just gone with a 360, but the decision has been made and what is done is done! If I blow this one up I might go that route. :)

As part of the build, he's had to bore it 0.04 over. He wasn't sure if he could find pistons any larger if it needed to be rebuilt again (he didn't look for them since we didn't need them), but, from this thread it sounds like I should be able to find pistons 0.06" larger for it? I don't know if it will be an issue, but I would like to know in the event I need the motor rebuilt since my goal is to drive it fairly regularly.
 
NukeBass said:
This is an interesting discussion, especially for me since I made the decision to put a 340 in my 73 Duster. I thought about a 360 since they were easier to find, but I decided I had to have a 340 because that's what would have come in it in 73. I took a chance on a motor at Carlisle last year and paid $850 for a 73 340 motor that was mostly complete. Not knowing then what I know now (and that still isn't much of anything), I didn't need most of the stuff that came with it. It came with all of the throw away things (like pistons and cam and stuff). At least I got heads, a crank, an oil pan, and the caps out of the deal. I have an intake, but we're going to put a more modern one on when it all gets said and done. Sometimes I wonder if I should have just gone with a 360, but the decision has been made and what is done is done! If I blow this one up I might go that route. :)

As part of the build, he's had to bore it 0.04 over. He wasn't sure if he could find pistons any larger if it needed to be rebuilt again (he didn't look for them since we didn't need them), but, from this thread it sounds like I should be able to find pistons 0.06" larger for it? I don't know if it will be an issue, but I would like to know in the event I need the motor rebuilt since my goal is to drive it fairly regularly.
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Do you have a 71 340 or a 73 340 ? I the original post you say you picked up a 1971 340 , 73 has cast low compression pistons , cast crank , not that the factory forged cranks were all good . some were some were not .
Mahle has some good pistons here is page put in the year it will spit out the replacement pistons available from tem . I'm using the 10.5 coated pistons , so far 10,000 miles and all is well

And Stroker , WGAF about Herb , what you got ? When it stops being fun , it's work , I'm retired , f work . I bought the car to have fun with my son , not to be competitive , been there done that in business .

http://catalog.mahleclevite.com/lv/search.php
 
jerry6 said:
And Stroker , WGAF about Herb , what you got ? When it stops being fun , it's work , I'm retired , **** work . I bought the car to have fun with my son , not to be competitive , been there done that in business.
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If you've never heard of the Herb McCandless 360, maybe you need to take up chebbies. I don't know what the rest of your incoherent rant means.
 
640 plus HP stock bore and stroke 360. Here are the specs from another forum.

"The specs on this last motor are:
Comp Roller 281-638 roller (PN 23-732-9)
Ross 11.5 pistons
Bill Miller aluminum rods
Edelbrock aluminum heads (mild Indy porting)
Edelbrock Victor Intake (#2915)
Barry Grant Demon carb. (doesn't say what size)

With the Victor it made 602hp @ 6,900 rpm and 478 lbs-ft from 5,400 to
6,200 rpm.
With the Performer rpm it made 43 more hp @ 3,200 rpm and stayed even to
6,200.
Above 6,200 the Victor made 45 more horses.

Herb finished with saying, in a 4-speed or lightweight (2,400 - 2,600
pounds) car the Victor would be faster. In a 3,000 pound bracket car, the
Performer could be faster. (notice the words would be and could be).
Then they took off the Edelbrock heads and installed the Edelbrock-Indy
version and made 630hp@7,100 rpm and 500 lbs-ft @ 6,100 rpm. But they
didn't say which manifold they used."
 
i like em both. 340 or 360. ill take either...but why use factory parts when there are so many aftermarket options? i LOVE strokers too...:D
 
LMAO! 4 pages and still going strong. I bet my dad can beat up your dad!
 
Now, you asked which is the better engine... In stock form it's the 340, hands down. You would have to be nuts to claim otherwise. The 340 has a forged crank, forged pistons, bigger intake valves (in the early ones), bigger cam, floating wrist pins, and higher compression. The stock 360 has none of those.

I built a 340 because that's what I had. The only stock parts are the block, crank, flywheel, and timing chain cover. If you're going to get silly and replace damn near everything like I did, then you might as well start with a 360. Like Joe says, you can get a decent buck for the 340. Open your wallet and either one can kick ***.
 
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