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Old 01-24-2005, 12:50 PM
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onebadmerc onebadmerc is offline
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I have a 67 F250 that I swapped the old 352 out for a 390. When I was doing this swap I needed to pull the car manifolds off the 390 and put on the 352 truck manifolds. The first thing I done was I ran the 390 until it was good and hot and then sprayed the exhaust manifold bolts with WD40. Well this partly worked, I still broke 4 of the exhaust manifold bolts. What I did, is I used a pair of vise grips on the broken ends of the exhaust bolt. It worked on gettting 3 of them out but the fourth one I had to drill a hole all the way through the bolt. I started with a small bit then kept stepping up in bit sizes until I was just a little bit smaller than the thread size. I then used a easy out and it came right out. I had the motor out of the truck when I did this, you might be able to drill it with the motor in the truck. If not you might have to pull the head to get the broken bolts out. I have not seen a FE yet that doesn't break exhaust manifold bolts when trying to get them out.
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