Z284ever

Here's what I've scrounged up. Let's see if we can flesh it out.

2008 - Bullitt Mustang. 4.6 3V. About 330 hp.

2009 - Boss Mustang. NA 5.4 with GT heads. 380+ hp.

2009 - SOHC 2v, 6.2, Boss engine (not to be confused with Boss Mustang), available in trucks. Aluminum block? Hp unknown.

2010/11 - Mustang gets Boss engine (not to be confused with Boss Mustang). Aluminum block, SOHC, 2V, 5.8L. Hp, unknown but in the 400-500 range.

Is the GT500 motor dead after that?

guionM

Bullitt & Boss Mustang info is accurate.

The Boss engine displacement of 6.2 is about right.

The Boss truck engine debuts with the restyled F series trucks which should be on next year's autoshow circuit.

The 6.2 Boss Mustang will be out during the '09 model run in 2009 (the restyled Mustang apparently is scheduled for spring 2009, roughly 2 years away). Expect horsepower in the 450 range for the Mustang.

One person I know at Ford believes the engine will be in a special Mustang the year before, but he freely states that's his gut feeling, not a concrete plan.

SVT doesn't run their engines forever (Lightning's blown 5.4 is the longest running "SVT" engine).

By the 2010 model year, the GT500 motor will be 4 years old, and well due for a replacement.

Bob Cosby

I don't know what they are going to do. I know what I'd like to see: Something LSx-ish powerful that isn't as wide as my Fox Mustang's strut towers nor as heavy as a semi-tractor's diesel.

Don't care how many cams or valves it has, nor whether or not it is considered "high tech".

georgejetson

Am I remembering right that the Boss motors are pushrod designs?

Z284ever

Right now, the info out there says SOHC.

georgejetson

So what will be the next GT engine?

96_Camaro_B4C

I'm doing some testing this week with a 2007 Series 60 14L (515 hp, 1650 lbft). It's a little on the heavy side (2550+ lbs dry), but it is a line 6, so it might fit between the shock towers...

Chris_Doane

Fixed.

graham

I think that was just the current "Boss" crate motor from FRPP, not the future production engine.

boomer78

Bullitt false.... 3v GT with 10-14 more HP
That 4v 4.6L engine made 322hp crank... and was the niche engine that was suppose to go into the BOSS

BOSS was 2010 with 6.2L BOSS engine,
2011 GT was 6.2L BOSS engine.

Boss 2009 or 2010 currently 5.4 4v 380+hp
2010/11 GT currently 5.8L BOSS
Taking a guess, I'd say that the BOSS might be in the old style 09MY,
and the 2010 will debut with the new engine...as opposed to the 2010MY redesign
having the same 3v 4.6 in the GT and a BOSS SE first year.

BOSS engines. AL 2v SOHC - VVT/VCT
5.8L Mustangs
6.2L in F-150

At least thats what some sources say.
And can change yet again.

Z284ever

I'm not following you completely. Are you saying that the '10 Mustang GT gets the Boss 6.2 or 5.8? I figured the 5.8.

I wonder what the GT500 replacement might be. Packaging a supercharger will get tougher with new pedestrian impact regulations.

boomer78

Sorry man...
yeah... it's a little confusing.

Originally...
2010MY redesign had
6.2L BOSS Special Edition
3v 4.6L V8 Mustang GT
2011MY Mustang GT would get the 6.2L BOSS engine (passed down a year after)

the lastest....
the 6.2 is now truck duty only (for now)
the BOSS mustang (year unknown... so it might have moved from 2010, to a 2009...) will have a 5.4L 4v 380+hp
the 2010 or 2011 (depending on when the engine is dropped in) Mustang GT will get the 5.8L BOSS engine

So effectively there'll be a BOSS mustang without a BOSS engine,
and a Mustang GT (which is NOT a Boss) WITH a BOSS engine.

nothing concrete that I've seen on HP

**i've heard things change about 3 times on this since last year...so god knows what else could change.

bossco

I doubt thre boss motors will be all that compact with an overhead cam arrangement Anywhosit, I could careless about the overall dimensions (the current chassis has alot of room to fit an engine - anything narrower and shorter than a S/C DOHC 5.4 is just icing on the cake), I want the displacement.

Alot of people are speculating that the Boss Mustang will be using the GT500 motor sans supercharger, nice tough motor and probably 150-200 pounds lighter than the GT500 motor and about 100 to 150 pounds heavier than the 4.6 3v in the GT. Seems to me though, the GT500 cylinderheads are a bit big for a naturally aspirated engine

Z284ever

I would expect the 5.8 to put out LS2 type power. If that is the "base" V8 in the Mustang, (which it appears it will be), the bar will be raised for Mustang.

At that point, it would seem silly for Chevy to offer a 300-ish hp midlevel V8 in the Camaro.

Bob Cosby

I want the displacement too, but with the Mod Motor, more displacement means more deck height which means a bigger & heavier motor.

To each their own.

Those GT500 4V heads will work fine on a mild production car.

Bob