Engine Swap - Ford Mustang Forum
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post #1 of 2 (permalink) Old 07-09-2014 Thread Starter
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Engine Swap

am looking at an 85 GT with a 351W in it. What does that do to the value of the car? Would refit it with 5L but not sure how badly it might have been butchered getting the W in. Has anyone out there done or heard of this type of swap?

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post #2 of 2 (permalink) Old 07-09-2014
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It shouldn't hurt the value unless you want it all original,as alot of people build the 351W as you get alot more horsepower and torque than a 5.0L. You dont have to do alot to switch them as the transmission bolt pattern is the same and to put a 351W in a fox you have to change the oil pan. The exhaust bolt pattern is the same also. The intake manifold is different as the 351W is wider and the front off the engine like alt and p/s brackets will bolt to both engines. And the distributer is different also do to the oil pump shaft on the 351W is larger than the 5.0L. Hope this helps you.Any other questions you can PM me.I have a 1984 GT with a 95 cobra motor stroked to 347 and a weinand supercharger on it backed by a tremac tko transmission. One thing you want to look at is the rear differential as the 85 came with a 7.5 and the newer ones came with a 8.8 rear diff. I changed mine.
Bob

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