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Old 07-11-2004, 09:51 AM
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Buick Roadmaster - Jay Leno's 55

Jay Leno uses GM Performance Parts to Rebuild His First Love

Everyone remembers their very first love. For many, it means a special car or truck. Rekindling the passion stimulated by a great street cruiser has inspired thousands to reclaim their past by restoring their first love. That's what happened when Jay Leno decided to rebuild and improve his vintage 1955 Buick Roadmaster.

He and Big Dog Garage shop manager, Bernard Juchli, turned to GM Performance Parts for the powertrain, suspension and braking components needed for the job. The result: a completely stock looking 1955 Buick Roadmaster that has the power, performance and handling characteristics of a serious street rod.

Leno purchased the Roadmaster in 1972 for $350 and had it restored in 1973. Jay drove it everywhere in the '70s. In fact, it was the car that he used on his first date with his wife. It also provided him a lift to his first Tonight Show appearance in 1977.

"It's special to me because it was my first vehicle here in California and it was with me during a number of other important 'firsts'," said Leno of his newly restored street rod. "Now its better than new because we've brought it into the 21st century. That means better performance, better mileage and better emissions."

Leno, an auto enthusiast and collector for most of his life, decided to restore the Buick - the first vehicle in his extensive automobile collection - and charged his Big Dog Garage crew to "bring it back to life." The vehicle, which sat in his mother-in-law's driveway for the better part of 16 years, could barely run and needed a lot of work when they started the project in 2002.

"I felt guilty that it was in such bad shape. It's kind of like falling behind on your child support. It needed more than just a restoration. It had to be better than new," said Leno.

Spoiled by the superior look and performance of his Corvette Z06, Leno decided that his cherished Buick needed some serious attention. Beginning with the exterior, the Buick received the latest classic black and silver DuPont paint, as well as new chrome. He also had wider, stock looking wheels made to accommodate wider tires. To keep the stock appearance of the wheels, Leno even remade the vintage Buick hubcaps slightly larger in order to cover the larger wheels.

The interior of the Roadmaster also received a great deal of attention, getting a complete upholstery restoration. Underneath the vehicle, the technicians at the Big Dog Garage enhanced the performance of the Roadmaster by beefing up the suspension and brake systems with Corvette C4 and C5 components.

But what makes the Roadmaster "go" was at the heart of this project. "The look of the vehicle had to be stock, but it had to be fun to drive...and I like power," Leno said. "When I heard about the GM Performance Parts ZZ572 crate engine--and the 620 horses under the hood--I knew that's what I wanted."

Juchli, who worked on the project from start to finish, agreed that the GM Performance Parts engine really made the vehicle come alive. Since he was doing most of the work on this vehicle, he also had a stake in handling the sometimes difficult engine installation process.

"The GM Performance Parts ZZ572 crate engine was the perfect solution," said Juchli. "The vehicle required some modification because it's a '55. But the ZZ572 made the job easier because it comes completely assembled out of the crate and it was easy to bolt in."

Leno says that his story is a lesson to anyone who owns an old GM vehicle parked somewhere "out back." Don't let it go. Don't junk it. Restore and improve it.

"If I had to rebuild the original Dynaflow transmission and the engine by going her or there for parts, I could do it - but eventually something usually goes wrong," said Leno. "With this crate engine, you just bolt it in, get great performance and its backed by General Motors - what's not to love?"

Jay says that his prized Roadmaster is not only the first in his extensive collection, but it is his favorite to drive. "You gotta love the look in the eyes of a guy driving a Porsche who sees you coming up on him, but just can't seem to shake you going up a canyon," he says, "He's thinking 'how can this old Buick do this to me?'"

He smiles as he tells the story, cranks up the 620 horses under the hood of his beloved Roadmaster, and goes for another drive.

About the ZZ572 / 620 Crate Engine
The ZZ572/620 is filled with a forged 4340 steel crank with a 4.375 inch stroke; shot peened, forged 4340 H-beam rods, and forged aluminum pistons with full floating wrist pins. A new GM single plane intake manifold and 850 CFM Demon carburetor deliver enough air and fuel to reach 620 horsepower at 5500 RPM, and 650 ft. lb. of torque at 4500 RPM. And, because of the redesigned rectangular port aluminum cylinder heads, all of this power and performance is delivered with a gas pump friendly 9.6 to 1 compression ratio.

Since this engine is built in multiple completion levels--short block, base engine with intake, and as a deluxe engine with carburetor and distributor--they fit any budget, usage and application. Consumers can purchase GM Performance Parts engines from any GM dealership. To locate your nearest dealer, call 1-800-GM USE US or visit www.goodwrench.com.

General Motors (NYSE: GM), the world's largest vehicle manufacturer, designs, builds and markets cars and trucks worldwide, and has been the global automotive sales leader since 1931. GM employs about 355,000 people around the world. More information on GM can be found at www.gm.com.

ZZ572/620 Specifications:

ZZ572/620

Part Number 12499190
SHORT

12498792
BASE

12498793
DELUXE


Horsepower 620 @ 5500 RPM
Torque 650 Ft. Lbs. @ 4500 RPM
Max RPM Recommended 6000 RPM
Compression Ratio 9.6:1
Block New! Sportsman Tall Deck Bowtie Gen VI 10.200” deck height
Bore 4.550”
Stroke 4.375”
Crankshaft Forged 4340 steel
Connecting Rods Forged 4340 steel
H-beam style
Shot peened
Pistons Forged aluminum
Full floating wrist pin
Piston Rings Plasma-moly rings
Camshaft Hydraulic roller
Valve lift: 632” l, 632” E
Duration @ .050” 254°l, 264° E
Lifters Hydraulic roller tappet
Cylinder Heads Aluminum rectangular port
118cc combustion chamber
Intake Valves 2.25” Stainless steel
Exhaust Valves 1.88” Stainless steel
Valve Springs Dual valve springs
1.540” coil diameter
1.800” installed height
197 Lbs. seat pressure
Spring Retainers Hardened chromemoly steel
Rocker Arms Aluminum roller rockers 1.7:1 ratio
Push Rods High performance one piece
Intake Manifold New! Aluminum tall deck single plane 4150 series carburetor
Carburetor 850cfm, mechanical secondary
Rear Main Seal New! One piece design
Windage Tray New! Screened and louvered
Damper High RPM torsional damper
Distributor H.E.I
Ignition Timing 36Ί total advance
Spark Plugs R42XLS
Fuel 92 Octane
Attached Images
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File Type: jpg Resize of W55HV_BU051.jpg (305.7 KB, 26 views)
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Last edited by Matt; 07-11-2004 at 09:54 AM.
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Old 07-11-2004, 09:57 AM
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Jay Leno's Buick Roadmaster #2
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File Type: jpg Resize of W55HV_BU019.jpg (319.3 KB, 41 views)
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File Type: jpg Resize of W55HV_BU072.jpg (333.8 KB, 38 views)
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Old 07-11-2004, 09:58 AM
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Jay Leno's Buick Roadmaster #3
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Old 07-11-2004, 10:01 AM
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Jay Leno's Buick Roadmaster #4
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Old 07-11-2004, 10:03 AM
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Jay Leno's Buick Roadmaster #5
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Old 07-11-2004, 10:06 AM
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Jay Leno's Buick Roadmaster #6
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Old 07-11-2004, 10:12 AM
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Jay Leno's Buick Roadmaster #7
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Old 07-11-2004, 10:13 AM
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NAZCA C2 NAZCA C2 is offline
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That car is nice. It was on "My Classic Car" earlier today. I normally don't like old sedans but that Roadmaster is the ultimate sleeper car.
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Old 07-11-2004, 10:16 AM
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Jay Leno's Buick Roadmaster #8
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Old 07-11-2004, 10:17 AM
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Quote:
Originally Posted by NAZCA C2
That car is nice. It was on "My Classic Car" earlier today. I normally don't like old sedans but that Roadmaster is the ultimate sleeper car.

That's actually what inspired me to post it. That thing just defies physics with the way it accelerates. And it's gorgeous and so well done to boot.
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Old 07-11-2004, 01:50 PM
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i was looking at a buick to come around 2 weeks ago im not a big fan but i like the pics
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There is 3 people on a boat with loads of children running around it, the 3 people are: 1. Bob geldof, 2. Ozzy Osbourne, and 3. Micheal jackson, they're sailing out for the G8 live aid, they've hit a rock and they're sinking, bob says: "save the children!" ozzy says: "Fuc the children!"

Micheal says "have we got time?"
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Old 07-11-2004, 02:08 PM
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Now there's a guy who's gone up in my estimation tonight. Very nicely done, though I dread to think how much the whole project would have all cost.

I can't help but think that custom rocker covers should be an inspiration to us all.
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Old 07-11-2004, 02:15 PM
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h/o 620 break? wow
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There is 3 people on a boat with loads of children running around it, the 3 people are: 1. Bob geldof, 2. Ozzy Osbourne, and 3. Micheal jackson, they're sailing out for the G8 live aid, they've hit a rock and they're sinking, bob says: "save the children!" ozzy says: "Fuc the children!"

Micheal says "have we got time?"
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Old 12-21-2004, 09:28 PM
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Jay Leno's Buick Roadmaster #9

Found a couple more...
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Old 12-29-2004, 12:25 PM
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Having your own name on the engine is just disgusting. Awesome car tough.
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