Thread: Are police packaged impalas good?

Originally Posted by Sabrewings

Also the fact that GM never made a 3.29 geared HD tranny and say so in their own SI manual.

What is in the 04+ GTP's?
Not trying to get in the middle here, but I do know they are stock with 3.29's. Are they not the 4T65EHD?

Originally Posted by Abrasive

What is in the 04+ GTP's?
Not trying to get in the middle here, but I do know they are stock with 3.29's. Are they not the 4T65EHD?

I'd need to see the RPO code list on the back of them. According to GM's SI manual they didn't. But, with the RPO code off the SPID label I can look up their specific tranny code. If someone would care to provide me with one I will post up the info here.

To be honest I've never looked at 04+ Grand Prix info.

I'm pretty sure only the CompG GTP's have 3.29's, but those will have a different RPO code because of TAP Shift.

I was recently given this info. (Thanks to BBEngineer)

Originally Posted by bbengineer

It appears that the only car with a 4T65E-HD and an overall 3.29 FDR is the 2004+ GTP Comp-G with Tap-Shift (L32 Motor). The tranny RPO will be MN7, but the tranny model will be 4CBB (not 4CAB or 4CHB like most). Also the VIN will have engine code 4, not engine code 1

The regulat 2004+ GTP has a 2.93 Overall FDR with an FR9 HD 3.29 FDR

Another note:
FR9 is 3.29 final drive ratio, but that is not overall final drive ratio. The overall final drive ratio uses the sprocket ratio as well.. that's why most HD's are 2.93 (33:37)

Good resource from Llyod at Fast Fieros
Transmission General Specificati

Originally Posted by triplecanopy

i guess my question started a real dog fight. haha

Or Cat Fight

Originally Posted by mr love77

I am new to the site and I have a 2005 9C1 and it does have all the heavy duty cooling for the oil, trans., and steering. I will look into seeing what codes there are for the trans.
Thanks

do you have the trans code yet?

heres a question, i know when they sell police cars they have to "disable" certain things. one of those things is the switch used to disable the brake lights. i was wondering if anyone knew if they put the speed limiter back on when they go to sell them?

Originally Posted by Jakegday

heres a question, i know when they sell police cars they have to "disable" certain things. one of those things is the switch used to disable the brake lights. i was wondering if anyone knew if they put the speed limiter back on when they go to sell them?

Disabling the surv mode is easy, since all they do is either unplug the switch or cut the wires to the switch. The limiter is harder since that requires a reflash of the PCM. I'm not aware of how high the 9C1 goes, but I'd imagine it's the same after its police duty is over.

My friend has one and it doesn't cut out according to him. Never was with him when he did it tho.

Originally Posted by Abrasive

What is in the 04+ GTP's?
Not trying to get in the middle here, but I do know they are stock with 3.29's. Are they not the 4T65EHD?

the COMP G's 04+ are 3.29. If it's not a COMP G but still a GTP (like mine) then its 2.93. I would know... I learned this the hard way.

Impala cop car = FAIL

Crown VIC (p71) = WIN

Originally Posted by Street Wolf

Haha, uh no. If it's a police package Impala it has a HD transmission, the over sized radiator, transmission cooler, power steering cooler,a oil cooler, and slight computer work. Fans kick on sooner, and stay on longer.

I bought a 9C1 and the trans is the same as the GP GT, only differ in it was alu-sub frame, P/S Cooler, Surv mode, stocks, and brakes and the PCM
Everything got swapped into my 98 GP GT

this is a super old thread.

Originally Posted by Bio248

this is a super old thread.

old thread is old? lol

well gonna use some info from here