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Pontiac 455 duet

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.


 


More Videos...


Pontiac 455 Dyno
.030 Over 455 , 10:1 forged rotating assembly, 4 bolt mains, e-heads. Full Roller motor. 475hp/560ft lbs@ 5000 rpm.





1973 Pontiac LeMans - NED 08-Oct-2008
1973 Pontiac LeMans drag race video





Custom 1972 Pontiac Firebird - V8 sound!
Jamboolio records a fully restored 1972 Pontiac Firebird with an 350 cid 5.7L V8 engine and a stunning new paint job. The monstrous hood scoops and huge air vents added to the all black exterior makes it a very bad-ass looking muscle car beast! The Exhaust sound is pretty awesome too! Enjoy. Location: 'Helsinki Cruising Night' Helsinki, Finland 2013 RELATED VIDEOS: - 800 HP Dodge Charger 605 cid / 9.9 L - The most bad-ass American muscle car ever?! http://youtu.be/ZYoo5zZD4lk - EXTREMELY LOUD Supercharged Corvette C6 Z06 http://youtu.be/yLXmSkqOi6E - 1970 Dodge Challenger R/T 440 Magnum - amazing V8 and Exhaust sound! http://youtu.be/uP7yw40HF5o Watch in High Definition (1080p HD). RATE, COMMENT & SUBSCRIBE! SUBSCRIBE for more upcoming automotive videos: http://www.youtube.com/subscription_center?add_user=Jamboolio Follow Jamboolio on TWITTER: http://twitter.com/Jamboolio





1976 Pontiac Trans Am with 455 testing out the new engine
In car video of a 1976 Pontiac Trans Am with a 455 in it. This has one of the comp cams extreme 276 cams in it. Probably the most potent cam I have used in any of my pontiac engines and still maintained excellent street manners. Unfortunately, one of the rod bearings did not hold up as well. The purpose of these runs was to try to get the car to blow up if it was going to. It has a slight noise in it that I couldn't figure out. Wound up being top rod bearing on number 7. Was torn down never to be assembled again. Car was awesome though. Sold to Volo auto sales in Chicago. They painted it and sold it as a 50th anniversary clone car for $20k more than they paid me for it.





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.





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: http://www.proformanceunlimited.com/pontiac.html 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.





1968 Firebird First Run
Here is a short clip of of my 1968 Pontiac Firebird about an hour after the first startup and cam break-in has been performed. I have been working on it for 4 years and this was it's very first day running. It has a .030 over pontiac 455 in it with a Comp XE274H cam, ported 6X heads, custom GM intake, Hedman headers, holley 770 carb, Muncie 4spd, 3.08 posi, and Spintech 3" Exhaust with X-pipe,Sportsman XL mufflers with dumps. I am a happy man. It runs great and sounds fantastic.





'72 Pontiac Trans Am 455 HO Burnout
As I was walking along the road I was passed by the car followed by the mysterious fog... I wondered what that might have been... The answer is... the Bandit and his T/A are back in town!!!!!!





Comp Cams XE276 Extreme Energy in a Pontiac 455 at idle nice lope
Here is a video of a comp cams XE276 cam shaft for a pontiac 455 in my 76 trans am. Nice lope. No problems with brakes either and a seriously potent cam. With a 2.41 rear end and stock coverter it would do a 200 ft burnout.





1979 Pontiac Trans Am 455 H.O. tour
This is a video of the 1979 Pontiac Trans Am H.O. that me and my dad built. Very powerful car. It has not been Dynoed yet or run on the drag strip. But it has done a few burnouts ;)





68 Pontiac GTO Car Craft Dyno Challenge 7/17/09
68 GTO on the Dyno at 2009 Car Craft Nationals. Car made 488HP and 454FTlb torque. This burgundy GTO is equipped with a 455, 72cc Edelbrock heads, and a NOS shot I forgot how much. TH400 with 4.11 posi. Sounded great through open headers. Owned by a nice guy from southern Minnesota.





350 with World heads
.040 over 350, speed pro forged pistons, rebuilt bottom end, double roller chain (note the green over spray lol, it was dark when i painted it, and I probably had a few too) World Sportsman II heads, orginally came with umbrella seals and shitty crack prone single valve springs, now have positive seals, comp dual springs with a dampner and 10degree locks. Performer Intake, with 600cfm Edelbrock, Comp XE274 cam, Comp Pro Magnum rockers 1.52 ratio. 9.3:1 compression, TCI Rattler balancer...and thats really all for the motor...its going in my 82 Monte Carlo, no rust, still needs body work, interior work...and well...it just plain needs work.





Pontiac Engine Break Down 301 to 455
Facts talk Pontiac Engines 301.303,326,350,400,389,421,455,482





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.





Big Burnouts: 1964 Pontiac Catalina Safari - /BIG MUSCLE
If you haven't figured it out by now, we love wagons on this show. To some they're a misunderstood breed, but to those in the know, they're amazing. Not only were the wagons of yesteryear known for their styling, but their capacity to haul as much cargo as a modern day pickup. This 1964 Pontiac Catalina Safari started off life as a Police Wagon, but was transformed by its owner into the kick-ass, tire-shredding monster you see here. With a Nelson Racing Engines 468 cid big-block under the hood, some updated suspension bits and a killer look, this big green machine is outside-the-box styling at its best. Owner: • Mike Artman





Which car is faster? Which Car is Faster?




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