Mustangemd19

This is probably a stupid question, but howcan you tell if your stang is a 3.9 or a 3.8? Im pretty sure mine is a 3.8 but never really checked.
What is the difference?

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Ultimeas

If I'm not mistaken, all v6s from 04 were 3.9L?

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2000 Black Mustang GT 5Spd
SLP LMII, Pypes O/R X, MGW STS, Spec Stage 1 Clutch, Predator Tune
Exhaust Clip

Mustangemd19

If thats the case that really sucks but at the same time, its good.
I just bought a 3.8 badge.[&:]
Just my luck. LOL

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johnt2k7

what year is yours
if its a 04 then u may have a 3.9 but if its not then u dont

and their should be a sticker or a plate either on the under side of the hood, or fenders or fire wall that tells the specs of the motor

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Mustangemd19

Crap! I just checked, and its a 3.9. But like I said this is a good thing too.LOL
I bought the badge at auto badges, do you think i can get it replaced with a 3.9?

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Xemeth

Early 04's were 3.8's. Then Ford ran out of 3.8's and didn't want to make anymore, since they were moving to the 4.0 cologne next year, so they took the 3.9's they used in the Windstars and put them in the remaining Mustangs.

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eddiev22

i think they are the same exact engines at the 3.8L but there is an extra bar or something to make the .1L

Xemeth

What do you mean extra bar? It is the same exact engine, the stroke is just a tad longer. It's technically a 3.85 liter, but 3.9 looks better.

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mustangman02232

ford wanted to get away from the "bad headgasket rep" of th e3.8 (fixed mid 96 BTW) so they slightly stroked it and put it as 3.9

all stuff will work with the split ports except for the tuners

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91 F-350 7.3 IDI/E40D 4x4 - DD/work truck
-8' fisher, dimond sander, flat bed w/boxes, 3/8" dimond plate rear bumper
-Banks trans command, 1900 stall, K&N

SOLD:
02 mustang vert, 3.8/4R70W
-K&N intake, exhaust with Long tubes
15.8 @89 mph 2.4 60'

Built/lifted 88 toyota pick up
bolt on 92 camaro 305 TBI

RIP tripsevn7
4/1/77 - 7/27/08

l_shizzle_l

isn't that a minivan?

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lots of "stuff"
Forged and stroked 4.3L V6