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Re: 340 or 360 engine block. Have you ever hurt one
[Re: justinp61]
#2675569
07/08/19 02:04 PM
07/08/19 02:04 PM
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Joined: Feb 2005
Posts: 20,164
PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,164
PA.
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Looks like a pretty good track record to me.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: 340 or 360 engine block. Have you ever hurt one
[Re: 11secdart]
#2675581
07/08/19 02:48 PM
07/08/19 02:48 PM
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Joined: Feb 2005
Posts: 20,164
PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,164
PA.
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Sorry I guess I misread it , forgot who posted , I would have never answered. Hit the ignore user button if I hurt your little feelings. Cheese and rice. Lol.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: 340 or 360 engine block. Have you ever hurt one
[Re: MR_P_BODY]
#2675657
07/08/19 05:57 PM
07/08/19 05:57 PM
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Joined: Sep 2018
Posts: 166
West Palm Beach, Florida
Craig J
member
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member
Joined: Sep 2018
Posts: 166
West Palm Beach, Florida
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I have broke 3 cyl walls.. 2 of them on the same hole which was sleeved and 1 on another engine... all been on 340 blocks.. thats all I run  Just curious, would you speculate at all on the primary cause? RPM related load or peak cylinder pressure? I ask because I am putting a 5.9 magnum in my 69 Coronet and am planning on E85 & 11-15 psi boost (no intercooler) I was planning shifting at 5500 rpm and the limiter set at 5800 I want to believe that holding the RPM down will help keep it together.
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Re: 340 or 360 engine block. Have you ever hurt one
[Re: Craig J]
#2675666
07/08/19 06:08 PM
07/08/19 06:08 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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I have broke 3 cyl walls.. 2 of them on the same hole which was sleeved and 1 on another engine... all been on 340 blocks.. thats all I run Just curious, would you speculate at all on the primary cause? RPM related load or peak cylinder pressure? I ask because I am putting a 5.9 magnum in my 69 Coronet and am planning on E85 & 11-15 psi boost (no intercooler) I was planning shifting at 5500 rpm and the limiter set at 5800 I want to believe that holding the RPM down will help keep it together. I'm pretty sure it was a weak area in the block.. I do run high rpm but that has never been a issue.. I didnt measure those blocks but it might have been core shift.. for yours just measure the thickness... now days I measure all my stuff EDIT all these blocks were/are 340 .030 over
Last edited by MR_P_BODY; 07/08/19 06:12 PM.
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Re: 340 or 360 engine block. Have you ever hurt one
[Re: Craig J]
#2675672
07/08/19 06:19 PM
07/08/19 06:19 PM
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Joined: Aug 2003
Posts: 4,976
new jersey usa
11secdart
master
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master
Joined: Aug 2003
Posts: 4,976
new jersey usa
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Thanks going to do that, you didn't hurt my feelings. I broke a rod and took out a cylinder wall I would think that was a " hurt". You jumped on and said that's not what you wanted to know. Fine , I'll take the cheese don't care for rice unless it's shrimp fried. Have a nice day!
68 Dart 410 / 904
92 D150 original owner
21 Ram 1500 Quad Cab, Big Horn , Hemi ,4x4
23 Audi Q5
16 Honda HRV
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Re: 340 or 360 engine block. Have you ever hurt one
[Re: 11secdart]
#2675676
07/08/19 06:27 PM
07/08/19 06:27 PM
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Joined: Feb 2005
Posts: 20,164
PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,164
PA.
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Thanks going to do that, you didn't hurt my feelings. I broke a rod and took out a cylinder wall I would think that was a " hurt". You jumped on and said that's not what you wanted to know. Fine , I'll take the cheese don't care for rice unless it's shrimp fried. Have a nice day! Here's my VERY first sentence. "I’m not talking about after you broke a rod or crank I’m talking about cracking up thru the middle of the mains like the big blocks commonly do."
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: 340 or 360 engine block. Have you ever hurt one
[Re: 11secdart]
#2675689
07/08/19 07:10 PM
07/08/19 07:10 PM
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Joined: Feb 2005
Posts: 20,164
PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,164
PA.
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I didn’t mean to come across like a dic but I hope to do a fresh build with a 4 inch K1 crank I got off of Dan at Performance Only and a set of K1 rods. (Chevy sized) I have a new set of Diamond Flat top pistons and a set of domed Wiseco Pistons. I went 9.74@2860 pounds and around a 10.04@3200 pounds in my sons car with stock location pushrod position. Next set of Edelbrock heads will get a set of Harland sharp .350 offset rockers, more cam, more compression, and more carb. That should give us an idea how good a stock block is.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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Re: 340 or 360 engine block. Have you ever hurt one
[Re: pittsburghracer]
#2675702
07/08/19 07:49 PM
07/08/19 07:49 PM
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Joined: Sep 2018
Posts: 166
West Palm Beach, Florida
Craig J
member
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member
Joined: Sep 2018
Posts: 166
West Palm Beach, Florida
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I didn’t mean to come across like a dic but I hope to do a fresh build with a 4 inch K1 crank I got off of Dan at Performance Only and a set of K1 rods. (Chevy sized) I have a new set of Diamond Flat top pistons and a set of domed Wiseco Pistons. I went 9.74@2860 pounds and around a 10.04@3200 pounds in my sons car with stock location pushrod position. Next set of Edelbrock heads will get a set of Harland sharp .350 offset rockers, more cam, more compression, and more carb. That should give us an idea how good a stock block is. hmmmm... Does this mean that 5.9 magnum with stock heads, block, crank, rods, pistons, camshaft, lifters, pushrods, valves, intake manifold, exhaust manifolds, head bolts, rod bolts, main bolts, timing chain isn't going to go 9.99@ 3500 lbs with a 78 mm turbo @ 15 psi?
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Re: 340 or 360 engine block. Have you ever hurt one
[Re: Craig J]
#2675706
07/08/19 08:08 PM
07/08/19 08:08 PM
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Joined: Feb 2005
Posts: 20,164
PA.
pittsburghracer
OP
"Little"John
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OP
"Little"John
Joined: Feb 2005
Posts: 20,164
PA.
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I didn’t mean to come across like a dic but I hope to do a fresh build with a 4 inch K1 crank I got off of Dan at Performance Only and a set of K1 rods. (Chevy sized) I have a new set of Diamond Flat top pistons and a set of domed Wiseco Pistons. I went 9.74@2860 pounds and around a 10.04@3200 pounds in my sons car with stock location pushrod position. Next set of Edelbrock heads will get a set of Harland sharp .350 offset rockers, more cam, more compression, and more carb. That should give us an idea how good a stock block is. hmmmm... Does this mean that 5.9 magnum with stock heads, block, crank, rods, pistons, camshaft, lifters, pushrods, valves, intake manifold, exhaust manifolds, head bolts, rod bolts, main bolts, timing chain isn't going to go 9.99@ 3500 lbs with a 78 mm turbo @ 15 psi? Couldn’t tell you honestly. I’ve always been a NA guy but may change that one of these days. If I do it better be a 7 second ride though, and big block. Lol
Last edited by pittsburghracer; 07/08/19 08:08 PM.
1970 Duster
Edelbrock headed 408
5.984@112.52
422 Indy headed small block
5.982@112.56 mph
9.42@138.27
Livin and lovin life one day at a time
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