Problem 429
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Problem 429
I'm building a 429 from scratch, problem is I have a 4uab crank, football rods, 429 pistons, and the pistons protrude out of the top deck .200 or more, an I missing something? Thanks for the help
FTE Community Team
Joined: Jan 2019
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Most of the folks with answers to this kind of thing don't usually frequent the "New Member Introductions" forum. You might want to post your question in the "Big Block V8 - 385 Series (6.1/370, 7.0/429, 7.5/460)" forum to get some answers flowing.
Welcome aboard!
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OK, crank has the right numbers.
Rods are either 6.605 or 6.549. That's only .056. Which do you have?
Medium truck rods are 6.385".
Deck can vary--10.300, 10.310 or 10.322. Which do you have?
Pistons--'68 to '73 for CARS has a compression height of 1.882", give or take a thousandth.
'79 to '92 for MEDIUM TRUCKS has a compression height of 2.140".
2.140 - 1.882 = .258".
Figure a couple variations with the block and rod measurements and you are very close to "...200" or more...."
What did you tell the piston man when you bought pistons?
Rods are either 6.605 or 6.549. That's only .056. Which do you have?
Medium truck rods are 6.385".
Deck can vary--10.300, 10.310 or 10.322. Which do you have?
Pistons--'68 to '73 for CARS has a compression height of 1.882", give or take a thousandth.
'79 to '92 for MEDIUM TRUCKS has a compression height of 2.140".
2.140 - 1.882 = .258".
Figure a couple variations with the block and rod measurements and you are very close to "...200" or more...."
What did you tell the piston man when you bought pistons?
