Way too many variables to determine the cost. New engine from Chrysler called a "crate" engine? Used engine from a salvage yard? Rebuild your current engine which might cost less. Why are both the engine and transmission needed?
Same questions for the transmission. New, used, rebuilt? Rebuilt will get you any updates or reliability improvements. New might not have those updates yet. Used won't but would possibly cost less.
This is what dealership and independent repair shops do but this is not "routine". Hourly labor rates vary. The lowest cost shop isn't necessarily the best deal in the long run. There will be fluids and filters, broken or rusty bolts, minor differences that must be addressed, etc. It's impossible to come up with an exact cost until the job is done. The best you can do is specify exactly what you want done, then present the list to a few different repair shops. No matter what they give you for an estimate, be aware there are going to be unexpected additional costs. If you complain about them, they will have to cut corners somewhere else to keep costs down. Some shops purposely quote prices higher than expected to plan for those unexpected problems, especialy if they suspect you might complain later. It's easier to give you a bill for less than you expected than it is to argue about additional costs.
Tuesday, March 9th, 2010 AT 12:11 PM