413 to 440 swap
05-01-2017, 08:28 PM
#1
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413 to 440 swap
Hi everyone, I'm new to the forum. I have a 58 custom royal running a 413 rb motor. The block has major cracks in it and needs replacing. The crank in the 413 has an 8 bolt flange that bolts directly to the torque converter on cast iron casing 727. I'm looking at a 440 motor that has a 6 bolt flange. I've been told the 413 crank will go straight into the 440 to make it compatible. Has anyone had any experience with this? Is this possible? Thanks.
05-27-2017, 12:34 PM
#4
Block has cracks in it?
Where?
Check bore and stroke on Wikepedia.
If stroke is same it might fit.
Is the 440 just a parts engine?
I would just get a later tranny and swap whole thing.
Save 413 drivetrain in garage under a tarp.
edit:Actually what your asking is not done very often.
Where?
Check bore and stroke on Wikepedia.
If stroke is same it might fit.
Is the 440 just a parts engine?
I would just get a later tranny and swap whole thing.
Save 413 drivetrain in garage under a tarp.
edit:Actually what your asking is not done very often.
Last edited by mr mopar; 05-27-2017 at 12:39 PM.
05-27-2017, 10:58 PM
#5
Super Moderator
A 413 crank should fit a 440 block but you are going to need to balance the rotating assembly unless the 440 rods and pistons weigh the same as the 413?
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