UNITED STATES
                     SECURITIES AND EXCHANGE COMMISSION
                           Washington, D.C.  20549


                                SCHEDULE 13G


                  Under the Securities Exchange Act of 1934

                        (Amendment No. _____7_____)*


                                  SPX Corp.
                              (Name of Issuer)

                       COMMON STOCK, $10.00 PAR VALUE
                       (Title of Class of Securities)

                                  784635104
                               (CUSIP Number)


Check the following box if a fee is being paid with this statement.
(A fee is not required only  if the filing person:  (1) has a previous
statement on  file reporting  beneficial  ownership of  more than five
percent of  the class of  securities described in  Item 1; and  (2) has filed
no amendment subsequent thereto reporting beneficial ownership of five
percent or less of such class.)  (See Rule 13d-7).

    *The remainder of  this cover page shall be filled  out for a reporting
person's initial filing on this form with respect to the subject class of
securities, and for  any subsequent amendment containing information which
would alter the disclosures provided in a prior cover page.

    The information required in the remainder of this  cover page shall not
be deemed to be "filed" for the purpose of Section 18 of the Securities
Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that
section of the Act but shall be subject to all other provisions of the Act
(however, see the Notes).



1  NAME OF REPORTING PERSON
   S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

   Forstmann-Leff Associates Inc.
   13-3131718

2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                (a) 

                                                (b) 


3  SEC USE ONLY



4  CITIZENSHIP OR PLACE OF ORGANIZATION

   New York


                    5  SOLE VOTING POWER
   NUMBER OF
     SHARES            654,515 shares
  BENEFICIALLY
    OWNED BY        6  SHARED VOTING POWER
      EACH
    REPORTING          145,100 shares
     PERSON
      WITH
                    7  SOLE DISPOSITIVE POWER

                       893,215 shares

                    8  SHARED DISPOSITIVE POWER

                       334,300 shares

9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     1,227,515 shares

10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES


11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

    9.7%

12  TYPE OF REPORTING PERSON

    IA, CO



1  NAME OF REPORTING PERSON
   S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

   FLA Asset Management, Inc.
   13-29256626

2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                (a) 

                                                (b) 


3  SEC USE ONLY



4  CITIZENSHIP OR PLACE OF ORGANIZATION

   Delaware


                    5  SOLE VOTING POWER
   NUMBER OF
     SHARES            None
  BENEFICIALLY
    OWNED BY        6  SHARED VOTING POWER
      EACH
    REPORTING          60,100 shares
     PERSON
      WITH
                    7  SOLE DISPOSITIVE POWER

                       None

                    8  SHARED DISPOSITIVE POWER

                       249,300 shares

9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     249,300 shares

10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES


11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

    2.0%

12  TYPE OF REPORTING PERSON

    IA, CO



1  NAME OF REPORTING PERSON
   S.S. or I.R.S. IDENTIFICATION NO. OF ABOVE PERSON

   Stamford Advisers Corp.
   13-3421430

2  CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP
                                                (a) 

                                                (b) 


3  SEC USE ONLY



4  CITIZENSHIP OR PLACE OF ORGANIZATION

   New York


                    5  SOLE VOTING POWER
   NUMBER OF
     SHARES            None
  BENEFICIALLY
    OWNED BY        6  SHARED VOTING POWER
      EACH
    REPORTING          85,000 shares
     PERSON
      WITH
                    7  SOLE DISPOSITIVE POWER

                       None

                    8  SHARED DISPOSITIVE POWER

                       85,000 shares

9   AGGREGATE AMOUNT BENEFICIALLY OWNED BY EACH REPORTING PERSON

     85,000 shares

10  CHECK BOX IF THE AGGREGATE AMOUNT IN ROW (9) EXCLUDES CERTAIN SHARES


11  PERCENT OF CLASS REPRESENTED BY AMOUNT IN ROW 9

    0.7%

12  TYPE OF REPORTING PERSON

    IA, CO



Item 1(a) NAME OF ISSUER:

     SPX Corp.

Item 1(b) ADDRESS OF ISSUER'S PRINCIPAL EXECUTIVE OFFICES:

     700 Terrace Point Drive
     Muskegon, Michigan  49443

Item 2(a) NAME OF PERSON FILING:

     See Item 1 of the cover pages attached hereto

Item 2(b) Address of Principal Business Office, or if none, residence:

     55 East 52nd Street
     New York, New York  10055

Item 2(c) CITIZENSHIP:

     See Item 4 of the cover pages attached hereto

Item 2(d) TITLE OF CLASS OF SECURITIES:

     Common Stock, par value $10.00

Item 2(e) CUSIP NUMBER:

          784635104

Item 3    Forstmann-Leff Associates Inc., a New York corporation, is a
          registered investment adviser under Section 203 of the Investment
          Advisers  Act of 1940  (the "Act").  FLA Asset Management, Inc. is
          a registered investment adviser under the Act and a subsidiary of
          Forstmann-Leff Associates Inc. Stamford Advisers Corp. is a
          registered investment advisers under the Act and a subsidiary of
          Forstmann-Leff Associates Inc.

Item 4    OWNERSHIP:

     (a)  Amount beneficially owned:
          See Item 9 of the cover pages attached hereto

     (b)  Percent of Class:
          See Item 11 of the cover pages attached hereto

     (c)  See Items 5 through 8  of the cover pages attached hereto

Item 5    OWNERSHIP OF FIVE PERCENT OR LESS OF A CLASS:

     Not Applicable

Item 6    OWNERSHIP OF MORE THAN FIVE PERCENT ON BEHALF OF ANOTHER PERSON:

     Not Applicable

Item 7    IDENTIFICATION AND CLASSIFICATION  OF THE SUBSIDIARY WHICH 
          ACQUIRED THE SECURITY BEING REPORTED ON BY THE PARENT HOLDING
          COMPANY:

          Not Applicable

Item 8    IDENTIFICATION AND CLASSIFICATION OF MEMBERS OF THE GROUP:

          Not Applicable

Item 9    NOTICE OF DISSOLUTION OF GROUP:

          Not Applicable

Item 10   CERTIFICATION:

          By signing below I certify that, to the best of my knowledge and
          belief, the securities referred to above were acquired in the
          ordinary course of business and were not acquired for the purpose
          of and do not have the effect of changing or influencing the
          control of the issuer of such securities and were not acquired in
          connection with or as a participant in any transaction having such
          purposes or effect.



                                   SIGNATURES

After  reasonable inquiry and to the best of my knowledge and belief, I
certify that the information set  forth in this statement is true, complete
and correct.

February 13, 1995

                                    FORSTMANN-LEFF ASSOCIATES INC.


                                    By:  /s/ Peter A. Lusk
                                    Peter A. Lusk
                                    Chief Operating Officer


                                    FLA ASSET MANAGEMENT, INC.


                                    By:  /s/ Peter A. Lusk
                                    Peter A. Lusk
                                    Executive Vice President
                                    and Chief Operating Officer


                                    STAMFORD ADVISORS CORP.


                                    By:  /s/ Peter A. Lusk
                                    Peter A. Lusk
                                    Vice President/Secretary



                                                                    Exhibit A


                                  AGREEMENT

     The undersigned, Forstmann-Leff Associates Inc., FLA Asset Management,
Inc. and Stamford Advisers Corp., agree that the statement to which this
exhibit is appended is filed on behalf of both of them.


February 13, 1995


                          FORSTMANN-LEFF ASSOCIATES INC.


                          By:  /s/ Peter A. Lusk                        
                          Peter A. Lusk
                          Chief Operating Officer


                          FLA ASSET MANAGEMENT, INC.


                          By:  /s/ Peter A. Lusk                        
                          Peter A. Lusk
                          Executive Vice President
                          and Chief Operating Officer


                          STAMFORD ADVISERS CORP.


                          By:  /s/ Peter A. Lusk                        
                          Peter A. Lusk
                          Vice President/Secretary