Originally posted by Wild Wild West 2: I've got a .070 over 454 in my Vega, but the block is poured to the bottom of the water pump holes.
I cracked 2 blocks that were bored .070 and larger but neither were filled with concrete. I bought a Dart big M block that was originally 4.350 and later 4.600 and still running that same block 13 years later. Not filled eitherThis message has been edited. Last edited by: Big Steve, March 27, 2025 03:46 PM
March 27, 2025, 04:08 PM
CURTIS REED
quote:
Originally posted by Big Steve:
quote:
Originally posted by Wild Wild West 2: I've got a .070 over 454 in my Vega, but the block is poured to the bottom of the water pump holes.
I cracked 2 blocks that were bored .070 and larger but neither were filled with concrete. I bought a Dart big M block that was originally 4.350 and later 4.600 and still running that same block 13 years later. Not filled either
I bet your machinist loved boring that 1/4” out of that block.
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March 27, 2025, 05:20 PM
sittin duck
quote:
Originally posted by Big Steve: I said it early in this thread and I will say it again, .070 over with a stock 454 GM block is just asking for cracked cylinder walls
I ran a old 289 casting stock block at .125" over with a 1/4" stroke crank for about 6 years never cracked a cylinder ended up with cracks in the deck then went to a dart block
March 27, 2025, 06:02 PM
Big Steve
quote:
Originally posted by CURTIS REED:
quote:
Originally posted by Big Steve:
quote:
Originally posted by Wild Wild West 2: I've got a .070 over 454 in my Vega, but the block is poured to the bottom of the water pump holes.
I cracked 2 blocks that were bored .070 and larger but neither were filled with concrete. I bought a Dart big M block that was originally 4.350 and later 4.600 and still running that same block 13 years later. Not filled either
I bet your machinist loved boring that 1/4” out of that block.
Block did weigh a whole lot less when he was done
March 30, 2025, 11:51 AM
1800gb
Been running a .100 over block well over 10yrs that started as a 477,now currently a 505.....not poured..no problems.....
April 05, 2025, 07:18 AM
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