[mustangII460]

Rebuilding a motor for regular duty.

I spend around $500.00 for the following bottom end work.

Block bored out, bored untill things are straight.

Rods re-sized, pistons installed and balanced.

Crank turned, polished and balanced.

Cam bearings installed also freeze plugs.
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Heads etc.

I would just go with a regular R&R on the heads. Since your not going to building a nitro motor, no need for massive dollars.

Depending on how bad they are, cost varys.

Also I would go with a hardened valve seats if your going to drive it everyday. Older motors that used leaded gas had softer seats.
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It never hurts to ask everyone about the shop you are looking at. If it were my coin, I would spend the extra money at a performance shop. I trust them because they are less likely to let a half @$$ed motor get out their door.

There is no reason you can't put it together yourself. There are all kinds of good books out there.
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Cleaning engine bay.

Steam clean the crap out of it. That Purple cleaner (Sell it at wal-mart) works great. Spary it on and let soak, before steaming. Scuff the old paint, and paint it again.

If I had access to a sand blaster I would do that.

Hope this helped a little.