4.6 motor question??

bluestreak_96gt · Apr 22, 2009

in the process of getting ready to buy a motor. my question is will a 99-04 4.6 motor bolt in with lil problem? Also will it match up with the T45 Trans? I'm on a budget so cost is a priority, along with Time.

Thanks.

Isaac J

squeak93 · Apr 22, 2009

Bolt into what? 96-98 gt? If so yes. Just use all the covers and accessories from your car. You want to look for a 02+ or else you will have to buy an 8 bolt flywheel (urs is a 6 bolt).

Look for an explorer or mounty 4.6. Aluminum blocks and ur almost guaranteed it hasn't been hot rodded to bad.

bluestreak_96gt · Apr 22, 2009

what year are you talking for the explorer or mounty??

RickieFrat · Apr 22, 2009

I have a 96 and swapped in a 02 PI motor. Went in with no problem. I used the stock 96 fuel rails and swapped over the coil packs. The bracket for the pass side had to be modded due to the sep belt route but I havn't had any issues since the swap 3 years ago.

Someone (tunner) did tell me that the motor wouldn't last because the motor is running on a 96 tune where the 02 has a differnet tune but it still runs fine for me. I do need a tune and that will come this summer after I install the Bullitt intake.

squeak93 · Apr 22, 2009

You don't need a tune... It would help it run better but a tune will help a 02 gt run better too..

ANY exploder/mounty with a 4.6 has an alum block. I found a 25k mile motor for 1k.

RickieFrat · Apr 22, 2009

squeak93 said:
You don't need a tune... It would help it run better but a tune will help a 02 gt run better too..

ANY exploder/mounty with a 4.6 has an alum block. I found a 25k mile motor for 1k.

The last time I had it on a dyno, had a bad o2 sensor and ran 255hp / 298tq. My only modification is a steeda pullies, CAI, and plenum spacer. I still have my stock coil packs and return fuel system.

squeak93 · Apr 23, 2009

The numbers sound right on par with what they should be.

bluestreak_96gt · May 17, 2009

squeak93 said:
Bolt into what? 96-98 gt? If so yes. Just use all the covers and accessories from your car. You want to look for a 02+ or else you will have to buy an 8 bolt flywheel (urs is a 6 bolt).

Look for an explorer or mounty 4.6. Aluminum blocks and ur almost guaranteed it hasn't been hot rodded to bad.

sorry about the reply here, i am about to but a 2001 vic engine with 43000 miles on it for 750 dollars. now are you saying i'll need to buy a new flywheel? or can i use mine? please tell it'll work. or if i can just use mine . now also what was the easiest way to swap out motors? and lastly, because i have a superchip in my car already. will my car need an immediate tune. i should be o.k. for a while correct? again thank u gentleman 4 ur help.

squeak93 · May 18, 2009

bluestreak_96gt said:
sorry about the reply here, i am about to but a 2001 vic engine with 43000 miles on it for 750 dollars. now are you saying i'll need to buy a new flywheel? or can i use mine? please tell it'll work. or if i can just use mine . now also what was the easiest way to swap out motors? and lastly, because i have a superchip in my car already. will my car need an immediate tune. i should be o.k. for a while correct? again thank u gentleman 4 ur help.

01 SHOULD be a 6 bolt flywheel. The only way to know for sure is to pull it and count the bolts. Your npi has 6 bolts.

Easiest way to pull the motor..... Hate to tell you but there is no easy way to do it. Just get in and pull chit.

Your car will run ok on the npi tune. But as stated above there is ALWAYS room for improvement on the stock tune. Its for emmisions and economy, not performance. I am still running on my npi tune and it runs just fine.

bluestreak_96gt · May 18, 2009

thanks for your help hopefully i will have my horse on the road this weekend. starting today if crumy weather goes away. i'll ask u more info if i get stumped on anything.

squeak93 · May 18, 2009

Double check the crown vic is a pi motor..... I don't know what years they started in vics. Easiest way to get a good guess is to look at the intake. If the runners go way down and almost touch the block then its a pi, if they are real short like your npi then you need to check casing #'s and such. It is possible to have a npi intake on the pi motor. Some early cars had them.

bdcardinal · May 18, 2009

01+ Vic, Town Car and Grand Marquis are PI.

bluestreak_96gt · May 19, 2009

yeah i was told 01 + vics are PI. was just curious about the flywheel thing, 6 bolts . how long am i looking at, as far as doing the motor swap. i have lifts, jacks, airtools, and any other tool needed. just have a slight lack of knowledge. it can't be much t more difficult than taking out and putting in a transmission can it, or more difficult than doing the PI swap. anyways any tips or pointers are very appreciative. thanks for your help

squeak93 · May 20, 2009

If you can do a pi swap then you can do a motor swap.... Its litterally a bolt in...

It took me a full weekend and then a few nights b/c we had a few threads strip out (don't ask). It will take a lot longer to swap the front cover, oil filter housing, oil pan and pick up, cam covers and upper plenum/egr stuff, headers and such. Both motors DO have a 6 bolt flywheel so your ok there.

Good luck and keep us posted.

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