Stock block 4.125 stroke power limit?
#1
Stock block 4.125 stroke power limit?
How limited is this much stroke due to the piston skirts coming out of the bottom of the cylinders more? 6.0L block.
To get 1200-1500hp would that be stupid with this much stroke? Or would the ideal way to do it is sleeve the block or use aftermarket block?
or just build a smaller cubed engine to do it?
Reason I ask is I have a 421 rotating assembly and am on the fence which way to go. Lunati crank, and custom made Wiseco pistons. And or course I want to spend as least amount of money as possible.
Thanks.
To get 1200-1500hp would that be stupid with this much stroke? Or would the ideal way to do it is sleeve the block or use aftermarket block?
or just build a smaller cubed engine to do it?
Reason I ask is I have a 421 rotating assembly and am on the fence which way to go. Lunati crank, and custom made Wiseco pistons. And or course I want to spend as least amount of money as possible.
Thanks.
#2
TECH Senior Member
How limited is this much stroke due to the piston skirts coming out of the bottom of the cylinders more? 6.0L block.
To get 1200-1500hp would that be stupid with this much stroke? Or would the ideal way to do it is sleeve the block or use aftermarket block?
or just build a smaller cubed engine to do it?
Reason I ask is I have a 421 rotating assembly and am on the fence which way to go. Lunati crank, and custom made Wiseco pistons. And or course I want to spend as least amount of money as possible.
Thanks.
To get 1200-1500hp would that be stupid with this much stroke? Or would the ideal way to do it is sleeve the block or use aftermarket block?
or just build a smaller cubed engine to do it?
Reason I ask is I have a 421 rotating assembly and am on the fence which way to go. Lunati crank, and custom made Wiseco pistons. And or course I want to spend as least amount of money as possible.
Thanks.
#6
Banned
iTrader: (2)
You're looking at spending $20,000 or more for just this powerplant....if you want a real, reliable, well built 1,500 hp set up.
So why not do it smart and use an LSX block with a 4" stroke or maybe a 4.1" stroke. The extra weight, after machining, will be around 80 pounds. Meaningless when what really matters is reliability, strength and longevity.
A resleeved aluminum block, prepped and ready to assemble.....will cost more than the LSX block to be ready......and be weaker and less reliable.
You want the strongest possible.....you can sleeve the LSX block too..........grey iron supporting ductile iron sleeves.....badass. And yes, its been done...contact Steve at RED.
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So why not do it smart and use an LSX block with a 4" stroke or maybe a 4.1" stroke. The extra weight, after machining, will be around 80 pounds. Meaningless when what really matters is reliability, strength and longevity.
A resleeved aluminum block, prepped and ready to assemble.....will cost more than the LSX block to be ready......and be weaker and less reliable.
You want the strongest possible.....you can sleeve the LSX block too..........grey iron supporting ductile iron sleeves.....badass. And yes, its been done...contact Steve at RED.
.
#10
Staging Lane
iTrader: (4)
Well built, 8:5 compression, 400+ci. engine with over 20lb. boost may get you there. Dependability? I just don't know the absolute limit of the lsx aluminum block. Although, look at Henessy's new 1,200hp. Venom GT. It has the aluminum LS3 vette engine with a twin turbo system. Yes, the block has been fitted with Darton sleeves. But it is still the stock block. Just my $.02!
#11
Banned
iTrader: (2)
I agree, 1,000 WHP will be quite easy, as its been done to death. Screw it, all you need is a good resleeved block. Strongest one of them all is the old LS1 block, btw. According to Steve at RED.......I was thinking you meant 1,300-1,500 WHP....that small increase is a HUGE undertaking....and expensive to do it right.
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#12
I'm talking about the entire set-up....turbo kit, long block, top end, fuel system, PCM, tuning and all. Good luck doing that for $10,000. If you do it will explode on start up.
I agree, 1,000 WHP will be quite easy, as its been done to death. Screw it, all you need is a good resleeved block. Strongest one of them all is the old LS1 block, btw. According to Steve at RED.......I was thinking you meant 1,300-1,500 WHP....that small increase is a HUGE undertaking....and expensive to do it right.
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I agree, 1,000 WHP will be quite easy, as its been done to death. Screw it, all you need is a good resleeved block. Strongest one of them all is the old LS1 block, btw. According to Steve at RED.......I was thinking you meant 1,300-1,500 WHP....that small increase is a HUGE undertaking....and expensive to do it right.
.
And you are wrong about the strongest blocks....The strongest block to use is a Gen IV 5.3 or 6 liter aluminum truck block which have solid main bearing webs - no breather holes to weaken the block.