* Stocks surge on big revision to second-quarter U.S. GDP
* Oil prices slip on supply plan if Gustav slams U.S. Gulf
* Dollar up on GDP data, ECB rhetoric still impacts euro
* Surprise gain in U.S. GDP upends U.S., euro zone debt (Adds close of U.S. markets)
By Herbert Lash
NEW YORK, Aug 28 (Reuters) - The dollar gained and U.S. stocks rallied more than 1 percent on Thursday on news of solid U.S. economic growth and a drop in oil prices despite the threat that powerful storm Gustav poses for the Gulf's energy infrastructure.
U.S. and European equity investors were cheered by a robust revision of second-quarter U.S. gross domestic product to 3.3 percent, up from an initial read of 1.9 percent, which had cast doubt on whether the United States was in or near recession.
Euro zone and U.S. government debt prices fell on the new number -- analysts had expected a 2.7 percent growth rate -- and stocks jumped as it fanned optimism in equity markets.
The improved economic outlook, together with the slide in oil prices, spurred investors to scoop up financial and retail stocks and jump into industrial shares such as Caterpillar <CAT.N>, often cited as a bellwether for the U.S. economy.
Consumer spending and net exports were more robust than initially estimated, and inventories fell less sharply in the GDP report, the U.S. Commerce Department said.
"Today's data on GDP was encouraging, and that is what investors really want to see: a tick up in the economy," said Bruce Zaro, chief technical strategist at Delta Global Advisors in Boston.
A separate government report showed the number of U.S. workers filing new claims for jobless benefits fell to a level that was a touch lower-than-expected.
Lower oil prices also supported equities. Earlier, oil rose above $120 a barrel, boosted by the threat Tropical Storm Gustav poses to U.S. oil installations in the Gulf of Mexico.
"You hate to be underweight in stocks when you have an economy that is performing better-than-expected," said James Paulsen, chief investment officer at Wells Capital Management in Minneapolis.
The Dow Jones industrial average <
> closed up 212.67 points, or 1.85 percent, at 11,715.18. The Standard & Poor's 500 Index <.SPX> gained 18.99 points, or 1.48 percent, at 1,300.65. The Nasdaq Composite Index < > rose 29.18 points, or 1.22 percent, at 2,411.64.European stocks closed sharply higher after crude prices slipped and the revised U.S. GDP number drew investors back into the market.
Banking was the biggest sector to gain on the pan-European FTSEurofirst 300 <
> index, which ended 1.5 percent higher at 1,190.91 points. The benchmark is off 21 percent this year.French bank Credit Agricole <CAGR.PA> was one of the top gainers, jumping 8.9 percent despite posting a 94 percent fall in quarterly profit.
Other banks also advanced, with Barclays <BARC.L> rising 5.8 percent, UBS AG <UBSN.VX> rising 4.6 percent, HBOS <HBOS.L> jumping 4.2 percent and Royal Bank of Scotland <RBS.L> advancing 3.7 percent.
Although the euro surrendered gains against the dollar, it remained off a six-month low from earlier this week on lowered expectations the European Central Bank will cut rates.
The dollar rose against major currencies, with the U.S. Dollar Index <.DXY> up 0.14 percent at 77.128. Against the yen, the dollar <JPY=> was off 0.03 percent at 109.51.
The euro <EUR=> fell 0.10 percent at $1.4705.
Both U.S. and euro zone government debt fell. Dampened expectations of a ECB rate cut and the solid revision to U.S. economic growth wiped out initial euro zone debt gains.
The benchmark 10-year U.S. Treasury note <US10YT=RR> fell 6/32 to yield at 3.79 percent. The 30-year U.S. Treasury bond<US30YT=RR> shed 1/32 to yield 4.39 percent.
Oil prices fell more than $2 after the U.S. government and the International Energy Agency pledged to release emergency stockpiles if Gustav disrupts U.S. oil production in the Gulf.
U.S. crude <CLc1> settled down $2.56 to $115.59 barrel, after falling as low as $114.08 earlier. London Brent crude <LCOc1> traded down $2.05 to settle at $114.17 a barrel.
Gustav was forecast to strengthen into a hurricane as it neared the Gulf of Mexico, home to one-quarter of U.S. crude oil production and 15 percent of its natural gas output.
Hurricanes have become a key focus in the oil market since Katrina and Rita in 2005 temporarily knocked out one-quarter of U.S. oil and refined fuel production, sending prices to then-record highs.
Asian stocks were little changed, but commodity-related shares received a boost from rising metals prices and also from crude prices,
Japan's Nikkei share average <
> was largely unchanged, and outside Japan, stocks in the Asia-Pacific region <.MIAPJ0000PUS> fell 0.41 percent. (Reporting by Matthew Robinson, Steven C. Johnson, Nick Olivari, Chris Reese and Frank Tang in New York and Atul Prakash in London) (Writing by Herbert Lash)