I have a 1994 cadillac deville 4.9 litre with 91,000 miles i would like to know for one , what are the original plugs platinum dual tip or ac delco. Some mechanics have said platinum.

2nd question, what are the best performance plugs,wires and air filter. And how can i increase the performance and fuel economy. Also where can i find a good online cadillac parts store for performance and replacement oem parts.


thanks Luigi

A good answer depends on which engine is in your car.

4.9 liter

Not a whole lot in the performance parts inventory, but you can pick up some info down in the engine section, 4.9. (did you edit your original post ?) I believe you can find a mild performance chip for the engine system. BUT, what I know about a 4.9 is little to nothing.

Look at www.rockauto.com for most common parts, followed by www.gmotors.com (Palm Chevy/Cadillac, Gainesville, FL); www.gmpartsdirect.com (Flow Chevy/Cadillac, Winston-Salem, NC); and Luke in Parts at Lindsay Cadillac over there >>>>> or up in the vendors heading at the top of the page.