340 or 360?

340 or 360?

  • Total voters
    88
-
X bl was always sold and advertised as the 340 X block so pick it apart all you want you'll have to take it up with the factory. Yes glidden's pro stocker was destroked still based on the 340 W-2 platform. I mentioned in an earlier post then I removed it that hot rod magazine had a great article article on their 10 fastest cars I believe it was called slicks and tricks where they put on slicks played with tune-ups and headers no internal modifications were allowed the 68 barracuda 4 speed made the top 10 no 440 or 383 A bodies made the list. And certainly no 360 cars no not even the little red express King of the smog motors
 
K.O. SWINGER said:
X bl was always sold and advertised as the 340 X block so pick it apart all you want you'll have to take it up with the factory. Yes glidden's pro stocker was destroked still based on the 340 W-2 platform. I mentioned in an earlier post then I removed it that hot rod magazine had a great article article on their 10 fastest cars I believe it was called slicks and tricks where they put on slicks played with tune-ups and headers no internal modifications were allowed the 68 barracuda 4 speed made the top 10 no 440 or 383 A bodies made the list. And certainly no 360 cars no not even the little red express King of the smog motors
Click to expand...
Mopar Action did a test with a 440 69 Fastback with headers, slicks and tuning it ran in the mid 12's spinning.
It is said the 69 440 A-bodies could very well be the fastest production factory Mopar.
 
360 block was based on the 318/340. 340 was block was based on the 318. 318 was based on the 273. 273 was based on the 318 poly. 318 poly was based on the 277 poly that's in my 56 Plymouth.

Different bores, different main bearing diameters (360, all others same), other minor changes, but critical dimensions - bore spacing, deck height, length and width of the block, cam to crank distance, lifter bore angle and diameter, etc - are ALL the same, from 1956 until the third gen hemi replaced the A/LA. And even the latest hemi has the same bore spacing as the 277 poly in my 56 Plymouth.
 
65 Cuda 340 said:
360 block was based on the 318/340. 340 was block was based on the 318. 318 was based on the 273. 273 was based on the 318 poly. 318 poly was based on the 277 poly that's in my 56 Plymouth.

Different bores, different main bearing diameters (360, all others same), other minor changes, but critical dimensions - bore spacing, deck height, length and width of the block, cam to crank distance, lifter bore angle and diameter, etc - are ALL the same, from 1956 until the third gen hemi replaced the A/LA. And even the latest hemi has the same bore spacing as the 277 poly in my 56 Plymouth.
Click to expand...
I have the 56 Savoy with the 277 and it is a sweetheart, all 160 horses of it!
I use a 96 ram 360 for my driver now, and in the 80's to 1996 I probably put 100k miles on numerous cordobas and doge Magnums, as they were our family cars.

The 360 is a great engine, and does a good job with the passenger cars.
My 77' Cordoba with the 400 is a really good unit, but I used to own a 79 300 with the HP 360, and that car had a lot more go to it than the 400.
and it drove better as well,,,,
 
IIRC the 400 in the 'Doba was all torque to move that midsized yacht.
 
pishta said:
IIRC the 400 in the 'Doba was all torque to move that midsized yacht.
Click to expand...


My dad had a 1986 or 1987 (I think) with a 400 lean burn. He towed a 28 foot Avion trailer with it. He ordered a Suburban so I bought it as I was towing with a 1972 Cutlass. I kinda hated feeling like an old man in those soft Corithian seats so I sold it and kept my Cutlass.
 
fishmens67 said:
Mopar Action did a test with a 440 69 Fastback with headers, slicks and tuning it ran in the mid 12's spinning.
It is said the 69 440 A-bodies could very well be the fastest production factory Mopar.
Click to expand...
so.... shhh... just think'n... outloud.... a 440 Commando with headers, slicks, and tuning runs about like a 200,000 mile, 150.00 dollar 360 magnum in a full size, long bed, D150, with regrind cam. Shhhhh... just think'n :realcrazy:


:poke:
 
English comprehension? Pay attention now...
Build a 360 as a 340 and the 360 runs away from the 340
It's not rocket science to build a 360 faster than a 340 and it may cost less. They look the same installed so no one knows...
9:1 compression 2.02 heads, 340 style 1968 cam specs, 340 exhaust manifolds, thermoquad on a cast iron intake, proper torque converter if it is an automatic.
I may have built an engine or 2 like this....
 
Don't forget about the E58 360. From the factory with 340 intake, 340 exhaust manifolds, 800cfm Thermoquad, Factory Windage tray, 340 cam. Plus that longer stroke and more Torque than a 340. Remember in the late 80's the switch to stroker motors with less compression so you could run pump gas. The 360 is the LA stroker right from Mopar- Can't Beat It!
 
I voted 340, but only stock, which none of you guys are going to leave it. I say stock because if it wasn't for smog laws, the 360 probably would never been designed. I mean why replace a perfect 340 unless you have to.
 
Hey guys if the 340s are so legendary how come nobody wants them ???
 
I currently have a 340 in my Dart and will be building a stroker with the other 340. I picked up the 1970 340 about 4-5 years ago for $150, they're still out there
 
I have had the slant 6 in a '73 Duster, the 318 in a '72 Scamp, and currently have a '71 Duster with a 360 original to a '78 Lil Red Truck. Never had a 340. But I have found good in every different MOPAR engine I have ever had.
 
ir3333 said:
i've read the blocks cast in '69 and '70 for 1970 model year.
but who knows?
Click to expand...
Correct. I have a February 11th of 1970 casting 360 block that's sonic checked and good for .100 overbore

Screenshot_20220131-191525_Facebook.jpg
 
You must log in or register to reply here.
-

Back
Top