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.
Pump Gas Pontiac engine by Tin Indian Performance 468 ideling on dyno 558 hp 583 ft lbs of torque
This is a 468 cid Pontiac engine we built for Mike Matuszek and his '66
GTO. The engine is based off a 455 cid pontiac block. An Eagle crank and
rod combo was used on the bottom end along with a set of KB forged pistons.
A Tin Indian Performance custom ground Comp Cams hyd roller was also used
with Comp Cams hyd roller lifters. The engine is topped off with Performer
RPM cylinder heads and intake. We also used one of our custom 4150 1"
spacers with the 950 cfm quick fuel carb. The combo pulled 11" of vac at
850 rpm! It made 558 hp and 583 ft lbs of torque. ALL ON PUMP GAS!!!
We've Had No Complaints On This Proformance Unlimited Engine Package
Proformance Unlimited's Pontiac 468 Live Run
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 Night at S.A.R.
1968 LeMans powered by a 468 CID Pontiac engine. I'm out one night with
some changes to the engine.
Sehr Performance Machine / Lane's 468 Pontiac.wmv
This is a 400 Pontiac stroked to 468. Lane had some work done elsewhere on
this engine in the past and was not happy with the outcome so he brought it
to Sehr to get it done right. Lane did it the right way, he has a really
good bottom end on it with Eagle stroker crank and Eagle full floating "H"
beam rods so he has plenty of reserve to build on.
2008 Pontiac Grand Prix GXP V8 Start Up, Exhaust, and In Depth Review
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Hello and welcome to Saabkyle04! YouTube's largest collection of automotive
variety! In today's video, we get an up close and personal, in depth look
at the Pontiac Grand Prix GXP.
During this presentation, we will take a 1st person look at what the
vehicle is all about beginning with the start up, performance data, fuel
economy, the occasional track data, and build quality. Also, I will teach
you how to use most of the interior and exterior features. Throughout the
video, I will highlight key styling and unique differences about the
vehicle, any available options, and of course it would not be an enthusiast
car video without the good ole engine portion with rev and Exhaust note with interior and exterior
perspectives. A thorough tour/review of this car designed to give others a
greater overall appreciation of the vehicle.
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presented in a more detailed fashion than ever before. Basically, this
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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).
468 Pontiac Stroker Engine
This is the Dyno of my
pontiac 400 rebuild for my 1969 Firebird. It's bored and stroked to 468
cu. in. It has a crane cam 238/246 duration at 50, 114 separation.
Edlebrock performance Ram Air IV aluminum heads. Holley 770 carb. March
aluminum bilet pulleys. It Dyno'd out at 515 hp, 544 ft lbs
at 5700 rpm.
The body (1969 Firebird) and interior is currently being restored. Can't
wait to drop it back in and take it for a spin!