The Pontiac Super Duty 455 Story
The Pontiac Super Duty 455 was unique in several ways. This video will give
a bit of insight into what makes it special. The background music is
Funkytown by Lipps Inc. The Engine Block & Component Photos Are The
Property Of Jim Dietzler/HPP.
Kenny Pierson and his Pontiac Ventura II at the track
Took the old girl to the track to play around. . Pay no attention to the
popping and cracking of the motor at about 4000 rpms. The motor let go. Won
an award at the carshow there and had to be pulled around by my buddy in a
golf cart. One of the screws on the rotor cap came out and locked up the
distributer. Tore the teeth off my composite distributer gear. Quick
fix-all better now. Car launched great and that would have been a 10 sec.
Super Sleeper 1972 Nova - /BIG MUSCLE
Wanna race? If so you may want to reconsider. You see this is Dru Diesner's
1972 Chevrolet Nova and it's anything but stock. From a looks perspective
it's nothing special, in fact most people wouldn't put up $500 for this
thing. Look a little deeper though and OH MOMMA! You see under its faded
green paint lurks a twin supercharged LS2 that makes 1,160 hp... at the
rear wheels. It epitomizes the term "sleeper", and is lethal to just about
every other road going vehicle it comes in contact with. Big Muscle
recently visited Northern Chicago to get a sample of this beast, and holy
crap was it one of the best automotive experiences we've ever had.
1973 PONTIAC LEMANS ON CHASSIS DYNO
HERE ARE A COUPLE OF PULLS ON THE CHASSIS Dyno. IT WAS LATER DISCOVERED
THAT WHEN THE CAR JUMPED THE ROLLERS IT BENT THE DRIVESHAFT. JUST ANOTHER
PART BROKEN TO ADD TO THE SCRAP PILE.
10 second 68 Firebird Sacramento Raceway 1987
This 68 Firebird was my first car purchased when I was 17 in 1977. The car
is currently undergoing a frame-off restoration.
At the time this video was taken in 1987 it was powered by a 455 Pontiac
The best ¼ mile performance was an ET of 10.87 and a MPH of 124.83 WITHOUT
the aid Nitrous oxide.
The heads are ported factory cast iron D-Ports cast# 48.
Crankshaft is factory 455
Rods are factory 73/74 455 Super-Duty
Camshaft is a Cam Dynamics solid flat-tappet with .618/.644" lift (1.65
rockers) 265/275 @.050 duration
Advertised duration is 312/322 int/exh
Pistons are Ross flat-tops yielding 12:1 compression ratio with the 69cc
Carburetion is 2 660cfm Holley center squirters mounted on a Doug
Nash/Warrior tunnel-ram manifold.
The differential is a Dana 60 with a 4.10 ratio gear set