1969 Ford Mustang Boss 429

[Skuzzy]

The 69 Shelby GT-500 had a 428 in it.

The only Mustang engines Ford ever graced with the 'Boss' moniker was the 429, 351, and 302 (two different ones).

They all had one thing in common.  You could broadslide a Lincoln Towncar through the intake ports.

[uptown]

The "BOSS" engines were 302, 351 and 429 I believe.

The 428s were the base 428, 428CJ... Cobra Jet, and the 428SCJ... Super Cobra Jet.

[Megalodon]

The 69 Shelby GT-500 had a 428 in it.

Yes so did the Cobra Jet... it was the advantages of 427 or 428 they were trying to figure out at the time... I just remember helping to switch the engines

 I remembered it being a pressure issue... but could of been different cranks.

Either way it was a good memory

Ted sold the lola a few years back
http://www.conceptcarz.com/vehicle/z12624/Lola-T70-MK-IIIB.aspx 

 

[CAP1]

Yes so did the Cobra Jet... it was the advantages of 427 or 428 they were trying to figure out at the time... I just remember helping to switch the engines

 I remembered it being a pressure issue... but could of been different cranks.

Either way it was a good memory

Ted sold the lola a few years back
http://www.conceptcarz.com/vehicle/z12624/Lola-T70-MK-IIIB.aspx 

 

 bold part.....that's where ford took the name from for the current factory drag racers......

[Skuzzy]

Yes so did the Cobra Jet... it was the advantages of 427 or 428 they were trying to figure out at the time... I just remember helping to switch the engines

 I remembered it being a pressure issue... but could of been different cranks.

Either way it was a good memory

Ted sold the lola a few years back
http://www.conceptcarz.com/vehicle/z12624/Lola-T70-MK-IIIB.aspx 

 

Cobra Jet was the name for the engine, not the car.  The Shelby GT500 used a 428CJ engine.  The Mustang 428 used either a Cobra Jet or a Super Cobra Jet engine.


The 428 and 429 are from two completely different engine families.  The 428 is from the 'FE' family, and the 429 is from the '385' family.

The 'FE' family uses a bore spacing of 4.63", while the '385' family uses a bore spacing of 4.9".

The base 428 engine was not a beefy engine.  2 bolt mains, thin wall casting, and a weak crankshaft WEB made it suitable for the mundane luxury cars.

The 428CJ and SCJ had 4 bolt mains (Lemans style capscrew connecting rod bolts for the SCJ), and a substantially stronger main WEB.

There were four different crankshafts for the 428.  The base 428, the 428CJ had two different cranks, and the 428 police interceptor.

There was also some subtle head differences I cannot recall the exact details.

[Megalodon]

The 428 and 429 are from two completely different engine families.  The 428 is from the 'FE' family, and the 429 is from the '385' family.

The 'FE' family uses a bore spacing of 4.63", while the '385' family uses a bore spacing of 4.9".

The base 428 engine was not a beefy engine.  2 bolt mains, thin wall casting, and a weak crankshaft WEB made it suitable for the mundane luxury cars.

The 428CJ and SCJ had 4 bolt mains (Lemans style capscrew connecting rod bolts for the SCJ), and a substantially stronger main WEB.

There were four different crankshafts for the 428.  The base 428, the 428CJ had two different cranks, and the 428 police interceptor.

There was also some subtle head differences I cannot recall the exact details.

 and the 427 is Windsor, 4 bolt main? right? smaller crank long time here .........there was also a base 429 not a boss...  I think.

and a 460 Boss?

Thanx for the explanation

[Megalodon]

bold part.....that's where ford took the name from for the current factory drag racers......

current in 1967/68?

[NaTorino]

all this talk about Cobra Jets is getting me happy happy happy

The base 429 was called the thunderjet, never heard of a 427 Windsor unless your building one out of a 351

By the way one of the fastest production mustangs in 1/4 mile was the 71 boss 351 (Cleveland with adjustable rockers and a better cam)


CobraJet

[Skuzzy]

and the 427 is Windsor, 4 bolt main? right? smaller crank long time here .........there was also a base 429 not a boss...  I think.

and a 460 Boss?

Thanx for the explanation

The 427 is part of the 'FE' family.  It had a larger bore and shorter stroke compared to the 428.  The 'Windsor' family are all small blocks and use 4.38" bore spacings, and four different deck heights to cover the range from 221ci to 351ci.

The 460 is part of the '385' family.  Just a stroked 429.

[CAP1]

Cobra Jet was the name for the engine, not the car.  The Shelby GT500 used a 428CJ engine.  The Mustang 428 used either a Cobra Jet or a Super Cobra Jet engine.


The 428 and 429 are from two completely different engine families.  The 428 is from the 'FE' family, and the 429 is from the '385' family.

The 'FE' family uses a bore spacing of 4.63", while the '385' family uses a bore spacing of 4.9".

The base 428 engine was not a beefy engine.  2 bolt mains, thin wall casting, and a weak crankshaft WEB made it suitable for the mundane luxury cars.

The 428CJ and SCJ had 4 bolt mains (Lemans style capscrew connecting rod bolts for the SCJ), and a substantially stronger main WEB.

There were four different crankshafts for the 428.  The base 428, the 428CJ had two different cranks, and the 428 police interceptor.

There was also some subtle head differences I cannot recall the exact details.

 i believe fords factory drag racers in 68 were called cobrajets?

[CAP1]

current in 1967/68?

 current.

[Megalodon]

current.

 Nope cobra and super cobra jet motors came out in  the middle of 68.

Edit:  http://www.mustangmonthly.com/featuredvehicles/mump_0101_1968_ford_mustang_cobra_jet_history_review/viewall.html

[Triton28]

 The '69 BOSS 429 was/is my very first dream car.  My mom has a fairly rare 1980 4 cylinder turbo that we used to travel around and show.  I used to see these all the time at the national shows we went to.

Seeing that black BOSS with the red interior for the first time was like reaching some sort of mechanical puberty.  It all made perfect sense.  

Edit - Hasn't the value absolutely skyrocketed on this car?  In the late 80's and early 90's I do not remember these cars going for anywhere near $100,000.

[Skuzzy]

i believe fords factory drag racers in 68 were called cobrajets?

I was referring to production cars.  All bets are off if we include the non-production items. 

If one has to have a Boss 429.  At least hold out for the 1970 model.  Much, much better engine.

[Triton28]

If one has to have a Boss 429.  At least hold out for the 1970 model.  Much, much better engine.

At the money these things are commanding, I wouldn't care, but the 69's four headlights always looked cooler to me than the 70's two.