hp limit of factory block
#6
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Depends how much time you expect to to handle that power too, the guys making 600+fwhp NA have found bore shadowing and such evidence of undesired movement in cars that see a lot of passes. They sometimes crack the block deck too.
Yes in excess of 1000rwhp has been done, but I don't know how much it was honestly used.
Yes in excess of 1000rwhp has been done, but I don't know how much it was honestly used.
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#8
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Still no comment on how much use. Is it 20 passes on a 400 shot or 200 passes? Block decked? I have heard of some guys not decking the block on cars that see a LOT of passes because on blocks they did deck they ended up eventually cracking from bolt to bore.
Let's throw out overbore size? And did they sonic check a bunch of blocks to get a thick one or did they just use whatever was laying around?
Let's throw out overbore size? And did they sonic check a bunch of blocks to get a thick one or did they just use whatever was laying around?
#10
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My stock block was sonic checked, mf'ed and half filled. Ran 30 passes with the 300 shot (824 rwhp) ran 8.97. I have about 30 passes with the 350 shot (870 rwhp) and ran the 8.68. Hit the second stage only twice (guessing close to 1000rwhp) ran 157 mph in 102* heat. I am about to pull the engine to freshen it up because # 8 is down on compression. The cylinders will be checked again to make sure all is good. I will let you guys know what we find.
#11
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i am not sure were the edge is. there are a several guys running faster than us with a production block. our block was originally lt1 2 bolt. now it has splayed mains 2,3,4 and a billet front cap. i built this engine about 9 years ago and it has been progressively getting faster ever sense. best pass to date was a less than clean pass at 8.96 and 154 mph. one other thing to keep in mind is the type of power added used. i think the turbo combination would probably make the most power with the best reliability.
#12
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Still no comment on how much use. Is it 20 passes on a 400 shot or 200 passes? Block decked? I have heard of some guys not decking the block on cars that see a LOT of passes because on blocks they did deck they ended up eventually cracking from bolt to bore.
Let's throw out overbore size? And did they sonic check a bunch of blocks to get a thick one or did they just use whatever was laying around?
Let's throw out overbore size? And did they sonic check a bunch of blocks to get a thick one or did they just use whatever was laying around?