The LeMans (on the left) has a mild, non-rebuilt 455 with ported & polished 6X heads, c. 9:1 compression, Edelbrock Performer intake, Holley 800 Street Avenger, Comp XE274 cam, making maybe 300-350 horsepower. The Grand Am (right) has a .030 over 455 with Edelbrock heads (87 cc chambers), 10:1 compression, same Comp cam but with 1:65 roller rockers, slightly better Exhaust (H-pipe), Edelbrock Performer RPM intake and Edelbrock 750 carb. About 500 horsepower at the flywheel. The heads make all the difference. The Grand Am has the Flowmaster American Thunder Exhaust system, which has the 50-series mufflers. LeMans has a Summit Exhaust system, which was cheap and went on nice & easy.
Tony Bromley's 400 to 460 stroke Pontiac Dyno Pull | QMP Racing
550 torque @ 5800rpm
535hp @ 4000rpm
For those of you paying attention and noticed the numbers aren't the same
on the screenshot, its because we made another few runs, but didn't tape
them. We'll upload a pic soon.
QMP Racing is located in Chatsworth, CA
Check out our website: www.qmpracing.com
Like us: facebook.com/qmpracing
qmp racing quarter mile race car engine motor custom high performance
chatsworth California hp horse power torque trq Dyno rpm turbo drag Exhaust run Boost psi dragster raceway nitro Nitrous super Supercharger muscle burnout idle motorsports Mustang cam Ford hydraulic
Street pontiac Cars Supra "Drag Racing" Pontiac Shelby Dodge Twin Stock
Mazda Ls1 Motorcycle Bike
1974 Trans Am Super Duty 455 Four-Speed FUN
This is a very rare 1974 Pontiac Trans Am Super Duty. Less than 1,000 of
this 455-powered, specially built monsters were produced from 73-74. Today
they command ever increasing prices approaching six figures.
Camaro Z28 messing with 455 GTO on the street
Late-Model Camaro Z28
messing around with a classic 455 powered GTO... The GTO jams it and then
one of the passengers thought they were being tailed by an undercover B4C
Camaro holding a radar
gun (video camera, lol)... you can see the nervous, unsure look on his face
as we roll beside... then the total relief once he recognized an old friend
behind the wheel...lol.
This was shot many years ago with an old analog camera, so apologize for
the poor quality...
Produced nedaCFilms, V8ponycars.com & Mustang-Town.com
PONTIAC - stock Pontiac Super Duty 421v8/405hp vs stock Chevy 409v8/409hp on DYNO
WATCH THE VID TO SEE HOW CLOSE THEY Dyno TO THEIR FACTORY
405hp/409hp ratings. Growing up.....Pontiac/Oldsmobile old timers/EXPERTS
who taught me most of what I know, often told me Chevy rated their horsepower in a more
optimistic way than say Oldsmobile or Pontiac. I've even heard Pontiac
rated/tested their engines in a 100 degree room, compared to Chevy in a 60
degree room. These Dyno results seem to reflect
that some of what I heard was true. Both of these engines are great, but
the results do seem to show that Pontiac was not rating their horsepower worrying if it
would cause "songs to be written" about their engines .... like the great
song "She's real fine my 409"--(Chevy).
Proformance Unlimited Live Run Pontiac 455-425hp
Proformance Unlimited's Pontiac 455-425hp crate engine. Check us out on
the web at http://www.proformanceunlimited.com. 800-267-3940
You can view our complete Pontiac engine line at the following link:
Proformance Unlimited is well known for it's custom designs. If you are
restoring your early Pontiac we can upgrade the horse power and still keep
it looking original.
Whether your vehicle is a GTO, Fire Bird, Trans Am,
Lemans, or a timeless classic, here at Pro-formance Unlimited we are here
to help design and build the engine combination that will match you with
your vehicle. Please browse our crate engines listed below or custom design
one of your own. From that special built stroker engine to that turn-key
drop in ready crate engine, call Doug or Steve we will be happy to answer
any of your questions.
Pontiac 400 break in
Number matching engine. Pontiac 400 cid. Break in of camshaft.
Formula 1973 with non stock color ( it supposed to be Burma Brown)
Pontiac running 2009 big cam idle
1964 Pontiac Tempest, 2dr Post, 455 .040 over, 4X heads, Comp XE274
cam,Performer RPM manifold w/ Edelbrock Performer 800cfm, Full Pypes X Exhaust with RacePro mufflers.
Engine has Holley 3130/750 now and different timing set up. Made huge
difference. I could never get the Edelbrock carb to work right. And yes
the Mr Gasket header gasket on the driver side was leaking just 40 minutes
after break in.
American Muscle Car - S02E02 - 1959-1963 Pontiac 421 Super Duty
The American Musclecar series relives that incredible time when Detroit
produced the most outrageous cars ever to hit the street. From the car that
started it all, the 1964 Pontiac GTO, experience the glory days of power
and speed through the stories of those who lived and breathed it then. This
2-disc set features twelve half-hour episodes devoted to each extraordinary
muscle car from that magical era.
Pontiac Firebird Trans Am 1959-1963
Pontiac 421 Super Duty
Ford Fairlane GT & Torino Talladega
427 Cobra 1963-1967
Chevrolet Corvette Camaro Z/28
Dodge Daytona and Plymouth Superbird
The Mopar Super Stockers
American Motors AMX
Dodge Challenger TA and Plymouth AAR 'Cuda
Buick Regal GNX
1955-1957 Chevrolet Bel Air
Proformance Unlimited's 455 Pontiac Crate Engine
Pontiac 455 Crate Engine Built By http://www.proformanceunlimited.com/
You can view our Pontiac engine line at the following link:
Whether your vehicle is a GTO, Fire Bird, Trans Am, Lemans, or a timeless
classic, here at Pro-formance Unlimited we are here to help design and
build the engine combination that will match you with your vehicle. Please
browse our crate engines listed below or custom design one of your own.
From that special built stroker engine to that turn-key drop in ready crate
engine, call Doug or Steve we will be happy to answer any of your
PONTIAC - "The Super Duty Story" Part 1 of 3
Pontiac had an SD engine program in the late 50s early 60s, and
later/briefly again in 1973/74 with the SD455. This video is regarding the
FIRST Super Duty program.---In only a few years time during the late 50s
early 60s, Pontiac MORE THAN DOUBLED their V8's horsepower output (described
in this video), while using/keeping the same V8 engine block they used thru
1955-81. Even though the same block was kept, from 1955-62 the cubic inch
displacement grew much larger than the initial 287 cuber it started as in
1955. It grew to a 317 347 370 389 and finally a 421 cuber in 1962. It
eventually maxed out at 455 cubes in 1970. By 1970 ALL the other GM
divisions were producing engines at 454 or 455 cubes (500 for Cadillac).
PONTIAC WAS THE ONLY DIVISION still using the same block they used in the
1950s on engines that had a much smaller displacement -- 287 cubes. The
1955 287 displacement would remain the smallest displacement ever used in
the Pontiac V8 block all the way until 1980/81 when a 265V8 was produced.
Since less durability was required for the smaller displacement, the block
was decked/butchered/lightened on the 265/301v8s of 1980/81. Prior to 1980
the block had never been decked/butchered/lightened. The 1980/81 265/301v8
blocks were about 200 pounds lighter than the 1955-79 blocks, and only 25
pounds heavier than a Buick 231V6.