To Tell the Truth

[Hemi Moose]

What about the 427 - 428 - 429 hp figures, were they all legit...and how about those 396 - 427 - 454 Chevy motors, were all the hp figures close to advertised figures or off.

[Paul Ceasrine]

I think the Ford 427 Wedge engine horsepower rating was pretty accurate.

The 428 (355 to 365) depending on non Ram-Air or Ram-Air was more in line than the factory 335 HP figure.

Never could figure out the 429 SCJ,,,,,,factory rated at 370 HP.

Or the Boss 429,,,,,,at 375 HP
I remember them running in C/S in 1969, and just not impressing
anyone.

[GTX JOHN]

In the 70's NHRA refactored the 340/275 as high as 330 HP. Somewhere around then I retired from Stock Racing for 15 years.

[k.pascoe]

Originally Posted by Paul Ceasrine

I think the Ford 427 Wedge engine horsepower rating was pretty accurate.

The 428 (355 to 365) depending on non Ram-Air or Ram-Air was more in line than the factory 335 HP figure.

Never could figure out the 429 SCJ,,,,,,factory rated at 370 HP.

Or the Boss 429,,,,,,at 375 HP
I remember them running in C/S in 1969, and just not impressing
anyone.

Paul,

I think the '71 429 SCJ was tuned up a little more since it was only optional in the Mustang that year.
The '71 429 CJ and the PI (police)(same engine) so they available in mid-size and full size car lines. Rated at 370 hp w/or with out ram air. (ram air only on the mid-size)

[Paul Ceasrine]

K,

The early 'S' Code Boss 429's.

When it first arrived in January 1969,
pre-release information stated, that it would be a 'flat-out street monster',
capable of 12.80's @ 112 MPH right off the showroom floor.

In reality, it was a 13.80 @ 102 MPH car.
And many Performance Car Magazine Editors labeled it a 'failed street supercar'.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The 1969 Boss 429 Mustang (375 HP), weighed in at #3445 lbs.
Had a Weight-to-Horsepower factor of 9.19 Wt/Hp.

Based upon Ford's weight and horsepower figures, the car should have been classed in D/S or SS/G in 1969.
There, it would have been a very strong competitor.

But, at the beginning of 1969, after Ford's January 15, 1969 introduction of the Boss 429,
the NHRA re-factored the Horsepower rating, based upon Ford's own calculations and
stated estimated performance results of the car.

The NHRA re-rated the Boss 429 to 410 Horseower, with a Wt/Hp factor to 8.40.
The 35 Horsepower increase by the NHRA 'drop-kicked' the car into B/S for 1969.

Right into the B/S pack of 66' and 67' Ford/Mercury 427/410 HP cars, 427 COPO Camaro's
and SS396 Nova's.
And of course, an un-reachable B/Stock record of 11.83.

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Good Magazine Articles on the Boss 429;

Hi Performance Cars.... April 1969
Hi Performance Cars.....November 1969 (featuring Tom Larkin B/S Boss 429)
Super Stock & Drag Illustrated,,, June 1969 (featuring a Boss 429, prepped by Bob Brown)
Car Craft,,,July 1969 (featuring Butch Leal)
Car Craft...January 1970
Super Stock & Funny Car,,,, September 1970 (featuring Pat Mahnken C/S Boss 429)

[BlueOval Ralph]

The one you refer to as the Tom Larkin car was owned by Tony Balowski from Flat Rock, Mi Tony bought it from Tom Larkins Ford in Flat Rock. It was a early car with the S coded engine heavy rods with 1/2" rod bolts and hyd lifters was prepped by Arlen Fadely and LeRoy Hinzmann was latter converted to a T engine from Ford, ran one year in stock. In 1970 was converted to a AHRA GT 1 car with light weight Tran Am sheet metal (hood, fenders, doors, bumpers, deck lid and windows. Was runner up at the AHRA Grand Nationals in Detroit driven by Ed Bennett.

Originally Posted by Paul Ceasrine

K,

The early 'S' Code Boss 429's.

When it first arrived in January 1969,
pre-release information stated, that it would be a 'flat-out street monster',
capable of 12.80's @ 112 MPH right off the showroom floor.

In reality, it was a 13.80 @ 102 MPH car.
And many Performance Car Magazine Editors labeled it a 'failed street supercar'.

------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

The 1969 Boss 429 Mustang (375 HP), weighed in at #3445 lbs.
Had a Weight-to-Horsepower factor of 9.19 Wt/Hp.

Based upon Ford's weight and horsepower figures, the car should have been classed in D/S or SS/G in 1969.
There, it would have been a very strong competitor.

But, at the beginning of 1969, after Ford's January 15, 1969 introduction of the Boss 429,
the NHRA re-factored the Horsepower rating, based upon Ford's own calculations and
stated estimated performance results of the car.

The NHRA re-rated the Boss 429 to 410 Horseower, with a Wt/Hp factor to 8.40.
The 35 Horsepower increase by the NHRA 'drop-kicked' the car into B/S for 1969.

Right into the B/S pack of 66' and 67' Ford/Mercury 427/410 HP cars, 427 COPO Camaro's
and SS396 Nova's.
And of course, an un-reachable B/Stock record of 11.83.

-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Good Magazine Articles on the Boss 429;

Hi Performance Cars.... April 1969
Hi Performance Cars.....November 1969 (featuring Tom Larkin B/S Boss 429)
Super Stock & Drag Illustrated,,, June 1969 (featuring Bob Tasca's 429)
Car Craft,,,July 1969 (featuring Butch Leal)
Car Craft...January 1970
Super Stock & Funny Car,,,, September 1970 (featuring Pat Mahnken C/S Boss 429)

[Paul Ceasrine]

Pat Mahnken of Fougler Ford (Monrovia, California)
converted his white 69' Boss 429 to a 70' model.

Ran in C/Stock in 1970 with more success.

pc

[BlueOval Ralph]

Fadelys 69 Boss 302 was converted by Kar Kraft at the direction of Jacque Passino. This was not a quick and easy job as the tail light panel had to be changed, it was welded in. A Boss 29 was harder as the quarter panels were different, just wondering if Ford did it for Fougler is was a x Ford exec. Could have been they paid Stroupe to do it?



QUOTE=Paul Ceasrine;300008]Pat Mahnken of Fougler Ford (Monrovia, California)
converted his white 69' Boss 429 to a 70' model.

Ran in C/Stock in 1970 with more success.

pc[/QUOTE]

[Paul Ceasrine]

Pat Mahnken (1969 Photo)

1969 Boss 429
Classed in B/Stock

Foulger Ford (Monrovia, California)



What times were winning the B/S Class at National Events back then,,,,,
1969 Winternationals,,,,,,,,12.32,,,,,,,,,,,Within range for the Boss 429
1969 Springnationals,,,,,,,,11.79,,,,,,,,,,,Oh Boy!!!

[Dinsdale]

The car in the front is a 1970 model. Behind that is a 69. Local guy here runs one just for fun but it isn't stock.