Are there any issues stroking a 5.3 from its standard stroke to 4.0 inches without boring over. This is just a general question. Ive only ever heard of people boring and stroking to 4 inches and didn't know if their was a reason why other than Why not.

 

I was hell bent on stroking my 5.3 until I did some research. I went with a 6.0 with l92 heads and flat top pistons. That and a truck cam will give me the torque I was wanting. Stroker engines make torque but lack longevity.

 

Changing the stroke, requires different pistons as the pin height will usually change and with that much stroke, the skirts may need extra clearance for the counterweights.

A stock motor, even when new, doesn't have a precision bore/ hone job that would typically done in a performance application. The cylinders are usually a hair slightly out of round.

 

Yea i guess i was more asking if their was any machining that needed to be done for the pistons to travel the extra length basically clearance for rods or something like that. I was asking becuase i saw on texas speeds site they have stroker kits for 3.80 bore lm7.

 

You are leaving alot on the table staying with a small bore and not building a true 383. You will have to clearance the block anyway for the rods and stroke a bit either way.

 

More cost effective is finding a 6.0 in half way decent shape and go with cam of choice...................