What 3V motor do I have

07ponyJL · Jan 17, 2017

I'm not sure if this has been asked before or if I'm even posting in the correct area but here it goes...
I have a 2007 Mustang GT with 169xxx miles. Mods are K&N cold air, pipes chatted xpipe, rough extreme mufflers, Bama 93 custom tune (strategy?), MGW short throw shifter... I think that's all.
Anyways, I have been doing some work on the car recently and I've noticed it doesn't have a 2007 3V motor in it. I have three idler pulleys so I'm guessing the previous owner switched out the engine and neglected to tell me..is there a way to validate, on the motor itself, what year it is?
I had a bad squeal I couldn't locate it so I replaced an idler pulley and tensioner assembly.. That didn't fix it so I went back to the parts house and the guy told me that my year motor doesn't have three idler pulleys, yet I can visibly see them.. And all '07 belt diagrams I looked up are completely different from what mine is.
I'm I being ignorant about something or is it possible I have an earlier year motor? And if so, how do 8 figure out which one I have?

stkjock · Jan 17, 2017

Pics would help

skwerl · Jan 17, 2017

Were you looking at the belt diagram for the 4.6 liter v8 or the 4.2 liter v6?

07 Boss · Jan 18, 2017

This is the front of my 2007 motor. 3 idlers and a tensioner.

bujeezus · Jan 18, 2017

Boss, that's dead sexy right there.

07 Boss · Jan 18, 2017

bujeezus said:
Boss, that's dead sexy right there.

That's what all the girls tell me at least.

bujeezus · Jan 18, 2017

Did you just call me a girl?

07 Boss · Jan 18, 2017

bujeezus said:
Did you just call me a girl?

Yeah

I could have called you a boy, but them's fightin' words where I come from.

bujeezus · Jan 18, 2017

Hahahahaa!!! Yeah, true!

BruceH · Jan 18, 2017

07ponyJL said:
I'm not sure if this has been asked before or if I'm even posting in the correct area but here it goes...
I have a 2007 Mustang GT with 169xxx miles. Mods are K&N cold air, pipes chatted xpipe, rough extreme mufflers, Bama 93 custom tune (strategy?), MGW short throw shifter... I think that's all.
Anyways, I have been doing some work on the car recently and I've noticed it doesn't have a 2007 3V motor in it. I have three idler pulleys so I'm guessing the previous owner switched out the engine and neglected to tell me..is there a way to validate, on the motor itself, what year it is?
I had a bad squeal I couldn't locate it so I replaced an idler pulley and tensioner assembly.. That didn't fix it so I went back to the parts house and the guy told me that my year motor doesn't have three idler pulleys, yet I can visibly see them.. And all '07 belt diagrams I looked up are completely different from what mine is.
I'm I being ignorant about something or is it possible I have an earlier year motor? And if so, how do 8 figure out which one I have?

All 3v front covers are the same with the same number of idler pulleys. Did you ever think that the parts store guy doesn't know what he's talking about?

Do you have a pic? Are you sure you have a GT?

1fastTbird · Jan 19, 2017

BruceH said:
....Did you ever think that the parts store guy doesn't know what he's talking about?

That wouldn't be a surprise to anyone.

06monera96 · Jan 20, 2017

from looking at my old engine.

That bottom right pulley should have a bracket that holds the radiator hose.

06monera96 · Jan 20, 2017

Looks like they are 3 idle pulleys.

07 Boss · Jan 20, 2017

06monera96 said:
from looking at my old engine.

That bottom right pulley should have a bracket that holds the radiator hose.

That's because it was on 05-06. In 07 they changed the thermostat housing and plumbing a little bit.

BruceH · Jan 20, 2017

06monera96 said:
Looks like they are 3 idle pulleys.

The tensioner also has an idler. Really though, this whole thread is useless. It's quite easy to tell a 3v V8 from any other motor. An idler pulley count is not how to do it. The valve covers themselves are unique to a 4.6 3v and easily recognizable. So it the fact of having 8 cylinders.

It's quite difficult to swap a different motor in. Not because it won't fit but because it won't work with the computer or wiring. The only motor that would swap in place of a 4.6 3v would be a 5.4 3v or 4v. If for some miraculous reason this happened it would be ok.

Speedboosted · Jan 20, 2017

5 doll hairs says you bought a badged up 6 cylinder.

But really...pictures please.

loots06 · Jan 23, 2017

COP boot colors, brown or black, at least that will tell what heads are in there. In 07 I believe they should be brown. 05-06 I know are black for sure.

Wes06 · Jan 23, 2017

Still waiting for op's return with pictures

07 Boss · Jan 23, 2017

loots06 said:
COP boot colors, brown or black, at least that will tell what heads are in there. In 07 I believe they should be brown. 05-06 I know are black for sure.

I have black COP boots in my 07. They changed them in mid 07 which is the 08 model year.

RocketcarX · Jan 23, 2017

It's the V4 bro, don't listen to these jack legs.

What 3V motor do I have

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