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).
The First time my 400 Big Block got started.
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.
389 Pontiac On Simtester
Watch John Edwards as he describes the Simtesting of a 389 Pontiac GTO
engine at Costa Mesa R&D Automotive Machine. (949) 631-6376 Be sure to
'Click' and SUBSCRIBE.
Pontiac 400 Big Block
taking out a pontiac 400 big block engine from a 1966 GTO. Engine needs a
little work. We took it out to put original exhost manfolds on it.
Engine rebuild part 1
This series is available on DVD Here is the link
We are rebuilding a GM 350 5.7 engine. Now in this particular case we
are also going to upgrade the engine to a 383 6.0 This is called
building a "stroker" motor. In other words we are increasing the "stroke"
of the engine which increased the torq & horsepower.
If you are able & wanting to rebuild an engine, this video should give you
a good overview of what to do. If you are having someone else build an
engine for you, you will be able to see what's involved in the process
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.
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.
Splitter's 541 Inch Pontiac Engine V8TV
http://www.v8tvshow.com - We turned to the Pontiac pros at Butler
Performance for insight on building Splitter's street / strip / road course
engine. This one has to do it all, so the parts need to be carefully
chosen to get the job done. David Butler takes us through the parts and
explaines his choices.