Originally Posted by slickvic3106
I just recently put a trans in my 99 crown vic. If the one you can get on ebay comes with papers or mileage i would go that route. But its gonna cost you a pretty penny to get yours rebuilt, although everything would be new inside. If you have a police car make sure you get one that is from a police car. It has different shift points and what not. If you have general knowledge and know how of tools and a car you could most likely change the trans. Hope this helps
slickvic, the interceptor transmission and the civilian transmission are virtually the same except for the length of the tailshaft housing and output shaft. The interceptors had a smaller diameter higher stall torque converter. This change was accounted for in the "Police tune" and has nothing to do with the transmission itself. I'm not too sure if the shift points themselves even changed. I think the rev limiter was just raised. For what it's worth, I have had both a police transmission and a civilian transmission in my Lincoln. Both shift identical with the converter combo that I have. Only the tailshaft housings were swapped.
Originally Posted by BrandonP71
Assuming its the overdrive band this would require a full transmission drop right? I can pick up a used 4R70W for ~$300 bucks on ebay. Would this be a better option then having my transmission rebuilt and/or replacing the overdrive band?
Brandon, do you have any local salvage yards in the area that can accommodate your needs? You should try to find a lower mileage transmission. It's just not worth it to replace the overdrive band. I watched my buddy disassemble one of these and it is a bottomless pit of parts, and if you are an amateur, good luck getting it all back together. For what it's worth, I have a 70K mile transmission from the local salvage yard in my Lincoln with all those mods you see listed and it shifts like a million bux. I got the transmission for $150 after I returned my core. Be sure they have a tag on it stating the year/mileage for a little peace of mind. With the civilian trans, you MAY have to also pick up the longer driveshaft to account for the tailshaft/output shaft difference. Both transmissions worked for me, but I have a custom driveshaft that is a tight fit already. Another thing that you should consider is getting the JMOD done to your transmission. This is one of the best shifting mods for the 4R70W and makes the transmission last longer because it reduces clutch slippage which is a common trait of the 4R70Ws. It Let's face it, these transmissions shift lazy even when equipped in a police car. That is one mod that is worth the money along with a nice big transmission cooler. :)
Here is a great place to have that done for you. The price can't be beat either:
lHere is some good information for you to browse through: