Re: stroking whats the benifit of a 340 block vs 360?
[Re: coronet1966d]
#149510
11/11/08 10:20 PM
11/11/08 10:20 PM
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Joined: Jun 2006
Posts: 5,169 CT
GTX MATT
master
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master
Joined: Jun 2006
Posts: 5,169
CT
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I thin at 450 horses with aluminum heads it wont make much difference, the 340 should hold up for sure not so sure about the 360 but I would think 450 horse wouldnt be a problem. 150 for a 340 is pretty cheap though. With machining costs as long as the durability of the 360 isnt in question Id use that, the difference is going to be what, 8 cubes or so? Not enough to really make a difference IMO.
Now I need to pin those needles, got to feel that heat Hear my motor screamin while I'm tearin up the street
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Re: stroking whats the benifit of a 340 block vs 360?
[Re: GTX MATT]
#149512
11/11/08 11:30 PM
11/11/08 11:30 PM
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Joined: Jan 2003
Posts: 75,125 A Banana Republic near you.
JohnRR
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I Win
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Quote:
I thin at 450 horses with aluminum heads it wont make much difference, the 340 should hold up for sure not so sure about the 360 but I would think 450 horse wouldnt be a problem. 150 for a 340 is pretty cheap though. With machining costs as long as the durability of the 360 isnt in question Id use that, the difference is going to be what, 8 cubes or so? Not enough to really make a difference IMO.
what's the durability issue on a 360
![](/ubbthreads/images/graemlins/popcrn.gif)
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Re: stroking whats the benifit of a 340 block vs 360?
[Re: JohnRR]
#149513
11/11/08 11:47 PM
11/11/08 11:47 PM
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Joined: Nov 2005
Posts: 15,119 85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,119
85086
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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
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Re: stroking whats the benifit of a 340 block vs 360?
[Re: marklock]
#149515
11/12/08 12:02 AM
11/12/08 12:02 AM
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Joined: Jan 2003
Posts: 75,125 A Banana Republic near you.
JohnRR
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Quote:
I like the smaller mains on the 340, less load on the bearings at high rpm. My
????
more bearing will handle a larger load , less FRICTION with the smaller bearing .
I'm still waiting for the DURABILITY issue ...
![](/ubbthreads/images/graemlins/Twocents.gif)
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Re: stroking whats the benifit of a 340 block vs 360?
[Re: JohnRR]
#149516
11/12/08 12:06 AM
11/12/08 12:06 AM
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Joined: Nov 2005
Posts: 15,119 85086
moparpollack
Lil Herman
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Lil Herman
Joined: Nov 2005
Posts: 15,119
85086
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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
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Re: stroking whats the benifit of a 340 block vs 360?
[Re: moparpollack]
#149518
11/12/08 12:09 AM
11/12/08 12:09 AM
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Joined: Apr 2007
Posts: 2,327 Glendale, AZ
69L78Nova
Banned. Forever.
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Glendale, AZ
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Yeah, no kidding. I ran 7800rpm in my race car for 6 years on a stock cast crank 360 with H-beam rods and hypereutectic pistons. Finally took it apart after all that time, and it looked brand new. My vote is for the 360. There is nothing magical about a 340, or the block itself. 8 cubes is 8 cubes!
1969 Nova 454/M21/3.31 Mild mid-11 second weekend cruiser
1994 F150 XLT Super Cab 2WD 5.0/4R70W/3.55 (Daily driver)
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Re: stroking whats the benifit of a 340 block vs 360?
[Re: 375inStroke]
#149525
11/12/08 11:04 AM
11/12/08 11:04 AM
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Joined: Jan 2003
Posts: 75,125 A Banana Republic near you.
JohnRR
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I Win
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Quote:
When the 360 was introduced, didn't they use the same casting for both motors, thus leaving the 360 with thicker cylinders, or am I smoking something?
No , you are correct , if building a smallblock stroker that's a good base .
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Re: stroking whats the benifit of a 340 block vs 360?
[Re: JohnRR]
#149526
11/12/08 12:15 PM
11/12/08 12:15 PM
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Joined: Apr 2007
Posts: 560 MI
marklock
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I tried too hard for a custom title
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MI
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Quote:
Quote:
I like the smaller mains on the 340, less load on the bearings at high rpm. My
????
more bearing will handle a larger load , less FRICTION with the smaller bearing .
I stand corrected ![](/ubbthreads/images/graemlins/bow.gif)
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Re: stroking whats the benifit of a 340 block vs 360?
[Re: marklock]
#149527
11/12/08 01:16 PM
11/12/08 01:16 PM
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Joined: Feb 2003
Posts: 12,675 Columbia, CT
moper
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I Live Here
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Columbia, CT
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There is very little difference. For 450hp, either one is fine. I second the "buy it, sell it, invest the proceeds" idea. A 408 with a mild hydraulic cam is 450hp. And "mild" in terms of a camshaft in a 4" stroke engine starts at 245°@.050. The 340 has less vlave shrouding, the 360 piston rocks less and can get closer to the head safely in a max effort build. IMO, the mains dont mean squat. In fact, the piston rock and shrouding don't mean a heck of a lot until you max things out anyway.
Well, art is art, isn't it? Still, on the other hand, water is water! And east is east and west is west and if you take cranberries and stew them like applesauce they taste much more like prunes than rhubarb does. Now, uh... Now you tell me what you know.
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