skylarkstage1
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- Joined
- Dec 29, 2005
- Messages
- 82
How much material can be removed from the 4.1 "291" block deck?
Decking a 4.1 Block
- Thread starter skylarkstage1
- Start date
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As little as it takes to get the decks true. The decks are thinner than a 109 block and they have a tendancy to crack to the coolant holes. To be honest everything about a 4.1 in my opinion is doing the least amount of material removal as possible.
boostingbuick
Going to be buried in this.
- Joined
- Aug 25, 2002
- Messages
- 1,548
I agree. Thin decks on those blocks. Take as little off as you can.
Mine was decked .025" to make it square. No ill affects that I can tell. Have not had the heads off since so I don't know if the deck cracked. I do not have a cooling issue or disappearing coolant issue so even if it were cracked it must not be a problem.
