Miles before replace 3.8L timing chain?

Our 95 van has 140K miles 3.8L. What has been the average amount of miles on transports with 3.8L engine before timing chain replacement.Sunthetic oil and blends used only since new in ours.....cheers KEV

Our 95 van has 140K miles 3.8L. What has been the average amount of miles on transports with 3.8L engine before timing chain replacement.Sunthetic oil and blends used only since new in ours.....cheers KEV
I would imagine it lasting the life of the engine and never needing replacement.

I agree!!

I agree.... should last the life of the motor...