How much HP can a 77 360 block handle?

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darndart

darndart

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I'm putting togather a 410ci stroker using a 77 360 block & was curious what kind of HP the block can handle? Is a partial fill of hard block worth doing? Any experiance or thoughts on the matter?
 
its anyones guess, it is usually somthing else breaking that takes out the block.if you partial fill yor block do it before you get it machined...
 
darndart said:
I'm putting togather a 410ci stroker using a 77 360 block & was curious what kind of HP the block can handle? Is a partial fill of hard block worth doing? Any experiance or thoughts on the matter?
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I,m running about 525hp with my 410ci without hard block.Do a search for the thread about "How much HP will a 360 take" under Maddarts user name.Lots have gone up to 600hp strokers.I,m also curious about the blocks stability once turbo,s are added.Also make sure to have your block sonic checked for core shift before any machining.
 
pettybludart said:
I,m running about 525hp with my 410ci without hard block.Do a search for the thread about "How much HP will a 360 take" under Maddarts user name.Lots have gone up to 600hp strokers.I,m also curious about the blocks stability once turbo,s are added.Also make sure to have your block sonic checked for core shift before any machining.
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I'm shooting for 650+hp on motor, so maybe that's a bad idea for a stock block! I might have to find out I guess!
 
darndart said:
I'm shooting for 650+hp on motor, so maybe that's a bad idea for a stock block! I might have to find out I guess!
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Maybe time to search for an R3 block,before something really expensive happens.Ask me how I know LOL.I,m on my 2nd 410 build,but using a 73 360 block.My 1st was a 77 block that I hydrauliced(spelling??):banghead:
 
pettybludart said:
Maybe time to search for an R3 block,before something really expensive happens.Ask me how I know LOL.I,m on my 2nd 410 build,but using a 73 360 block.My 1st was a 77 block that I hydrauliced(spelling??):banghead:
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How did you hydraulic it?? A leaky head gasket??
 
darndart said:
I'm shooting for 650+hp on motor, so maybe that's a bad idea for a stock block! I might have to find out I guess!
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What is the use of the car? All out squeeze every ounce of power out of it everytime you drive it? How high you going to revv it? I would think over 7K to get there with a SBM. Depends on use and the Tune as to how long it will live, same as any engine. As said earlier, usually something else fails "Broken Piston from running lean, broke rod from same, Loss of oil etc will take out a part and everything else in its path when it comes unglued. I have been there with a 340. It wasn't the blocks fault. It was the parts inside that broke and ended up taking out the block at 7200RPM. Was the weirdest sound ever, like a glass jar with marbles getting shook up. The pan caught most of it. I did however find parts of the rods and piston in the Carb. After I put the new motor in, I found out the Mufflers caught some of the crap too, Chunks of Rod, Valve, block and piston was flying out the exhaust.
 
Mad Dart said:
What is the use of the car? All out squeeze every ounce of power out of it everytime you drive it? How high you going to revv it? I would think over 7K to get there with a SBM. Depends on use and the Tune as to how long it will live, same as any engine. As said earlier, usually something else fails "Broken Piston from running lean, broke rod from same, Loss of oil etc will take out a part and everything else in its path when it comes unglued. I have been there with a 340. It wasn't the blocks fault. It was the parts inside that broke and ended up taking out the block at 7200RPM. Was the weirdest sound ever, like a glass jar with marbles getting shook up. The pan caught most of it. I did however find parts of the rods and piston in the Carb. After I put the new motor in, I found out the Mufflers caught some of the crap too, Chunks of Rod, Valve, block and piston was flying out the exhaust.
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The car will be drag only. Block has been bored .040, honed with torque plates, decked, line bored w/ ARP main studs. I'm using a SCAT 4340 4" Crank, SCAT 4340 H-beams, Probe flat top pistons, Comp 269/[email protected]/.698 w/ 1.6 rockers, CNC ported Indy-2 heads, ported Victor W2, 1050 Dominator, 1 7/8" TTI W2 race headers. Compression will be about 12.5:1 with the chambers milled to 58cc. I'm thinking around 6600 rpm shift point. I hope the block can handle it, cause it's already assembeled! I'll probably be carfull with the timing & jetting, so I don't run into detonation.
 
darndart said:
The car will be drag only. Block has been bored .040, honed with torque plates, decked, line bored w/ ARP main studs. I'm using a SCAT 4340 4" Crank, SCAT 4340 H-beams, Probe flat top pistons, Comp 269/[email protected]/.698 w/ 1.6 rockers, CNC ported Indy-2 heads, ported Victor W2, 1050 Dominator, 1 7/8" TTI W2 race headers. Compression will be about 12.5:1 with the chambers milled to 58cc. I'm thinking around 6600 rpm shift point. I hope the block can handle it, cause it's already assembeled! I'll probably be carfull with the timing & jetting, so I don't run into detonation.
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There are plenty of combos out there like yours that live. Like you posted just keep an eye on the tune up and Run it!!
 
I think it's a crapshoot. It's either going to take it for a while, or come apart...lol. If you were starting from scratch I'd say get a better block. But since it's done - run it and tell us how it does.
 
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