? Maximum Bore 454 Bow Tie Block

Old 02-10-2009, 07:35 PM
  #11  
ashbros
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Well, I have ran over a 1000 hp 902 ft lbs torque
but I filled the block just below the freeze plugs
studded mains
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Old 02-13-2009, 07:41 PM
  #12  
obsessedtruck
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We are dynoing some blower motors of my bosses. A 540 with a 14-71 on it and its at 2600HP. That IS with a bowtie block. He has had several in the past at 1600-1900hp using them.
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Old 02-14-2009, 05:19 PM
  #13  
tcarda
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I just want to get close to 1000 hp with a Bowtie block and not have any worries and block filler.
On a different note, I just received my new Edelbrock 24 degree heads from RFD and I cannot wait to put them on my 540 and go to the dyno.
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Old 02-23-2009, 03:38 PM
  #14  
alexu
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We just did an OLD Bowtie ProMod done by Gene Fulton . I contacted him to find out how much I could hone. His response was no more than needed. It was 638 ci. We decided to resleeve it and there was more cylinder wall to spare. Installed sleeves and went on with life.
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Old 08-02-2015, 07:23 AM
  #15  
Rupturedduck
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Originally Posted by tcarda View Post
I have the same block and casting number, but mine started as a 502 and now it is a 540. How much hp can these Bowtie blocks handle?
MY BLOCK IS AT 4.625/4.250 STROKE=572 cu.in/850hp AND Iam TOLD THE BLOCK CAN GO 4.750.
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Old 08-10-2015, 10:24 AM
  #16  
lmgator56
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I would have it sonic checked to see how thick your cylinder walls are that will tell you how big you can go
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Old 08-11-2015, 05:28 AM
  #17  
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I would hope since 2009 that he figured it out. LOL
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Old 08-11-2015, 10:32 AM
  #18  
oldandtired
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MY BLOCK IS AT 4.625/4.250 STROKE=572 cu.in/850hp AND Iam TOLD THE BLOCK CAN GO 4.750.[/QUOTE]

Not sure why this string came back to life but you will never get 4.75 out of a Bow Tie block.
Oh wait, use the water jacket as the exhaust and run it 2 cycle.
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