Proformance Unlimited's Pontiac 400...Live engine run
Pontiac 400 built by Proformance Unlimited Live Run
You can view this engine package at the following link:
Pontiac 400 with 450 HP engine package with Edelbrock aluminum heads can be
custom designed to your specific needs. All engines can be custom painted
to match your vehicle at your request. We can outfit your engine with the
exclusive March Performance serpentine belt system. We can also assist you
in choosing the proper transmission and stall speed converter combination
for your vehicle and have it shipped directly to you as your performance
crate engine is being built.
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 - 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).
Sehr Performance Machine / Randi's 400 Pontiac
Randi came to us with a 400 Pontiac project for his 1968 Firebird. He
didn't want to go crazy on the build but he wanted something that would
give him performance that is better than original.
With that goal in mind Scott did some custom porting on his heads, upgraded
his valve train and went with a Custom COMP cam and lifters and aluminum
roller rockers. We maintained his complete original rotating assembly but
had to re-balance his crankshaft, it had been poorly balanced sometime in
the past and was out by 127 grams on one end and 181 grams on the other. A
single plane intake with a 780 Quick Fuel carb got it breathing and the
fire is lit with a Flamethrower ignition package. Custom cut and fitted
8mm plug wires are standard equipment here at Sehr. Headman custom coated
headers will be added at installation time.
The results were a satisfying 543.5 Hp @ 5500rpm and torque reading of
519.8 @ 5400rpm. Corrected to sea level the numbers are 577 Hp and 551 Tq
with nearly 400 lb of torque at 3500rpm.
PONTIAC - The Glory Years! Part 1 of 5
(1956-93). Some great basic Pontiac history, along with the CARS and PEOPLE
(Bunkie Knudsen, John Delorean, Jim Wangers, Pete Estes, etc) who made
Pontiac great in those years. In 1956 Bunkie Knudsen was hired as Pontiac's
General Manager. He was told by GM "Turn Pontiac around in 5 years or the
division is gone". Within about a year he quickly assembled a great team.
Knudsen was fortunate enough to pick up engineer John Delorean from Packard
when that company closed, Delorean later became the father of the GTO and
MANY Pontiac Innovations. Knudsen was also fortunate enough to lure a
brilliant "Olds Rocket V8" engineer away from Oldsmobile---Pete Estes who
helped the Pontiac V8 breath as well as it could.
The First time my 400 Big Block got started.
Car Warriors - S02E04 - Pontiac Firebird 1978
Car Warriors is a competition unlike any other. Every week, two of the
country's most talented and colorful local garages will have one crazy
challenge: Build an ENTIRE CAR from a piece of junk -- in just 48 hours.
It's the ultimate car building competition.