Thread: FT Truck engine core thickness

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Originally Posted by blueoval67

I'm not very familar with the FT series engine in the big trucks. I know that they usually have the beefier castings but, do they have an increase in core thickness to allow larger overboring than the standard FE? If anyone has any experience with these engines your knowledge would be a great help. Thanks guys!!

If you have any doubt's have your machine shop sonic test the block.

One thing to watch for on FE industrial engines is, the hole in the block at the bottom of the distributor, where the oil pump drive shaft engages the dist., is bigger than on the car engines. Not a problem as long as you use the heavy duty dist. and oil pump, but the car-type stuff will fit in there without the support of the bottom bushing surface. A machine shop could bush the hole to fit the smaller drive. I think the difference is only about 1/64" or so.(33/64 drill fits the 391.)