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BBF460 help

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Silverado88

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« on: July 28, 2019, 03:21:53 PM »
I need help with my motor build. I bought a new long block ford 460 from summit. Install new aluminum heads and roller rockers etc. I am at a dead end installing the front motor mount plate. Is there an alternative or is that front plate a must? This plate is blocking the screw hole for the alternator bracket. The damper I was told to use rubs on the motor plate. Is there any recommendations I need to get this right ? My harmonic balancer is 6.7 and must use the damper M-6359-D460. Before I throw more money down drain, can someone shine some light on this . My boat hasn’t been in water in 2 years due to a complete overall on motor and floor.
« Last Edit: July 28, 2019, 05:14:40 PM by Silverado88 »


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Flusher

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« Reply #1 on: July 29, 2019, 05:54:26 AM »
I have only done a couple Ford rail kits, so I don't really have a design that I'm happy with.  The design of the timing cover doesn't really lend itself to a front plate the way Chevy and Mopar do.  Short of switching to an aftermarket timing cover or belt drive, I have found that there are two different ways to attach the front plate.  1.) Attaching to the water pump location.  2.)  Attaching to the lower four timing cover bolts.

Attaching to the water pump location permits a design that spans over the damper and facilitates removal of the plate without removing the damper.

Attaching to the lower four timing cover bolts seems to be the more popular option and is visually more appealing (to me).  The negatives are 1.) Removal of the damper is necessary to remove the plate.  2.) The plate and timing cover are sandwiched together with three or four different length standoffs located between the plate and cast timing cover.  This bothers me on so many levels.  3.) As you are discovering, the plate is very tight around the balancer, alternator, and block-mounted mechanical fuel pump.

I will be so bold as to say, modifying your front plate and/or standoffs is the correct fix.  Compromising your damper or rebalancing your engine to compensate for a poorly designed front plate is not worth it.

Would it be possible for you to mock up your front plate and post pictures of the interference with the damper/counterweight and the alternator.  I can give you a direction when I see exactly what the problem is.

Don't stress too much over the alternator.  Chances are, you can simply trim the plate or drill a new hole in the plate.
"I want to roll with my brother Joe" - Joe Bateman - January 29, 1950 ~ November 27, 2013

Silverado88

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« Reply #2 on: July 29, 2019, 09:30:11 PM »
Thank you for the reply! I cant believe I didn't think of that, so I will expand the front plate crank hole on the motor mount to fit my damper. Iv been calling machine shops all day and no one can, you have anyone that can? I have already cut the water pump plate so the motor mount plate will align with the bolts. Again I appreciate the response.

 


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