* Senate passes budget plan that could pave the way for tax cuts
* GE shares end up, reversing sharp early drop
* Indexes up: Dow 0.7 pct, S&P 0.5 pct, Nasdaq 0.4 pct (Updates to close)
NEW YORK, Oct 20 (Reuters) - U.S. stocks hit record closing highs on Friday and the S&P 500 posted a sixth week of gains after the U.S. Senate passed a budget resolution, lifting hopes that President Donald Trump's tax-cut plan may move forward.
Shares of General Electric reversed sharp early losses to end 1.1 percent higher, and the S&P industrials index also finished up 1.1 percent.
The company's new chief executive vowed to shed more than $20 billion worth of assets after the company's quarterly results badly missed Wall Street's expectations.
The Senate's approval late Thursday of a 2018 budget blueprint could pave the way for Republicans to pursue a tax-cut package without Democratic support.
"It's just a reaction to the thought that just maybe there might be something coming from Congress in the way of tax reform," said Paul Nolte, portfolio manager at Kingsview Asset Management in Chicago.
"Everybody had kind of given up hope, and after the comments over the last 24 hours, people are like, shoot, this may actually happen."
Stocks rallied following the November election of Trump, partly on his promises to cut taxes and reduce regulations.
The S&P index of financials, which are expected to benefit from the administration's proposed policies, rose 1.2 percent and its components were among the day's best performers. The small-cap Russell 2000 index gained 0.5 percent. Small-cap companies are likely to get a boost from tax reform.
The Dow Jones Industrial Average rose 165.59 points, or 0.71 percent, to end at 23,328.63, the S&P 500 gained 13.11 points, or 0.51 percent, to 2,575.21 and the Nasdaq Composite added 23.99 points, or 0.36 percent, to 6,629.05.
All three indexes posted record closing highs, extending their recent run of records, and the Dow, which broke above 23,000 this week, gained 2 percent for the week.
The Dow also registered a sixth week of gains while the Nasdaq posted four weeks of gains.
The S&P 500 was up 0.9 percent for the week while the Nasdaq added 0.4 percent.
Some investors saw little reason to worry about the extended climb.
"This has been a healthy advance. It has been a slow, steady grind upward. There's been extraordinarily low volatility," said Hank Smith, co-chief investment officer at Haverford Trust in Radnor, Pennsylvania.
Focus remains on third-quarter earnings as well, though results so far have been mixed. PayPal's stock rose 5.5 percent after upbeat earnings.
Celgene slumped 10.8 percent after the company abandoned testing a drug to treat Crohn's disease.
Advancing issues outnumbered declining ones on the NYSE by a 1.55-to-1 ratio; on Nasdaq, a 1.58-to-1 ratio favored advancers.
About 6.2 billion shares changed hands on U.S. exchanges. That compares with the 5.9 billion daily average for the past 20 trading days, according to Thomson Reuters data. (Additional reporting by Sruthi Shankar in Bengaluru; Editing by Dan Grebler and James Dalgleish)