Rebuild or replace? 351m
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Rebuild or replace? 351m
Well I got my motor to turn over today for about 3 seconds when I noticed the passenger side is spitting out oil/anti-freeze. This truck has sat for two years and hasn't ran since. Needs a good cleanup and having fuel issue too. Anyone know if I should rebuild this motor or go with a 400?
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If the block is still good, you could rebuild the one you have into a 400. It doesn't take much more than a standard rebuild, except for swapping a crank and pistons for a 400. Bore it .030 over and you have yourself a 408.
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Originally Posted by roushracing617
If the block is still good, you could rebuild the one you have into a 400. It doesn't take much more than a standard rebuild, except for swapping a crank and pistons for a 400. Bore it .030 over and you have yourself a 408.
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From: Delaware
You will have to take the block to a machine shop and have it overbored, then get oversize pistons. They typically overbore these +0.030'.
You cannot just replace the pistons with standards, because the cylinder will be out-of-round due to wear. Also since you have some water inthe cylinders the wall will have some rust.
Get Badger flattop pistons for nearly 9.0:1 CR.
You cannot just replace the pistons with standards, because the cylinder will be out-of-round due to wear. Also since you have some water inthe cylinders the wall will have some rust.
Get Badger flattop pistons for nearly 9.0:1 CR.
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TMI, sponsor of this site, should be able to get you what you need. Tim Meyer is the owner and knows what to do with these engines, as he has done quite a few of them. Check out his website on the left sidebar of your screen.
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From: chicago burbs
yeah, nevermind that oil and antifreeze spitting out of it....that's probably normal?
spitting out from where, the exhaust, the side of the block, or?
spitting out from where, the exhaust, the side of the block, or?
Last edited by grclark351; Apr 9, 2006 at 11:37 PM.
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Originally Posted by grclark351
yeah, nevermind that oil and antifreeze spitting out of it....that's probably normal?
spitting out from where, the exhaust, the side of the block, or?
spitting out from where, the exhaust, the side of the block, or?
