Bob's Resource Website

Studebaker headcasting numbers
(Sourced from newsgroup forums)



Studebaker Casting # ("MOST" Casting #'s are NOT Part #'s, but there are exceptions..)
(updated: April 2018)


Casting# Part# Year Gasket Compression Capacity Comments
43034

    1922-24 Std (aluminum) ?

Light Six
120445

    1923 Std ?

Light Six
199697

    1941-1951 Std ?

170 Six
512853

    1941-42 Std ?

Commander 6
514883

    1941-55 Std ?

Commander 6
526989

526989 (*N) 1949-50 Std 7.00:1 Fits

170 Six
526990

526990 1949-50 Std 7.00:1

Fits

170 Six
527222

527772 1951-54 Std 7.00:1 Fits

232 V8
527772

527772 (*N) 1951-54 Std 7.00:1

232 V8
529278 529278 (*N) 1941-53 Std7.00:1 Fits 170 Six
535107 535298 Std7.50:1 Fits 1954 V8
535976

536097 1957 (V8) Std7.5:1 58.0 cc
Fits
59V,60V,61V
1957 Golden Hawk
3E10 (224?) Ref .
536180

536180 (*N) (L6) Std? Fits 1955-56 Six (185)
537555

(3)   (4) /td>
537571 (*1) (*2)

55-621535982 8.00:1 54.5cc
Fits
16G8, 6H, 56B, 56H
59V,60V,61V,62V
536180 536180 (*2)

55, 56

7.5:1

16G6, 56G
(6 cylinder)
1544290

1958

7.0:1 Fits

Low Compression
(6 cylinder) Export?
536603 (*2)

55, 56
62

7.0:1

16G6,56G
(Export)
536790 (*1) (*2)

55, 56
62

7.0:1/7.5:1

16G8,6H,56B,56H
62V (Export)
1545072

8.50:1 54.5cc
1547738 1547738 (*1) (*N)

59

8.0:1 Fits

(use 1548218/1542379), 59S (Six Cyl)
1548294 (*1)

59, 60

7.0:1 Fits

59S, 60S (Export)
1549218 (*1)

60

8.0:1 Fits

59-60S
15505821553551 (*1)

61,62,63

( )

61S, 62S, 63S
1555295 (*1)

62

8.25:1

62V
..........

..........
1550582 1553551

61-63StdOHV 6
1555294

1555295

-1962- Std 7.75:1 56.5cc
Fits
1557570
( Notes)
1557571

63-64 Std 9.00:1 w/cupped pistons &
Shim Head gasket(1545072) |
10.25:1 with flat top
pistons & shim gasket (1545072)
54 cc Standard R1 heads
1557570

1557571 63-64 Std 8.25:1 54.5cc std. V8 - 63-64
1557579

63-64 Std 8.5:1
15575811557579

63-64 8.00:1 Fits 63 - 64 V8's except R-series
1557571 (*1)

63,64

8.25:1

63V, 64V
1557582

1557580 (*1)61-64 Std 7.00:1/7.5:1 67.7cc63V,64V
Truck & R2

Note on R2 Heads
Feb 2018

1555479   (R3)  

   

63,64

(?)


R3 heads
#1560454A gasket
R3Info
1560959 1561582 ( Note)

64

( )

64S OHV (Supercedes 61-63)
1564435

66

Fits

65-66 V8
1564874

66

Fits

65-66 194 OHV
1565707 66

( ) Fits

66 194 OHV
1692061

7.50:1 Fits

Commander 6
1692062

7.00:1 Fits

Commander 6
6480407 (*2)

56

()

56J
3884520

65-66

( )

283 V8

(*1) - 59-64 manual
(*2) - 55-56 manual

Index


      Brad Bez: Feb 2018
      The claim over the years that R2 heads are the same as Truck heads is not true. All R series engines used J series 3/8" reach spark plugs. The truck heads, and all others used H series plugs, 1/2" reach. If you screw in a J plug into a truck head several threads will show, and possibly build up carbon, and pre-ignite.

       

      Casting# 1557582 are the R2 heads that have about 67 cc's and the Casting# 1557570 set is R 1 that has about 54 cc's. A 63 or 64 truck with either a 259 or 289 has the same casting number head as the R2.

      With flat top pistons, the 67 cc (Casting 1557582) will give you about 9.0 compression and the 54 cc's ( Casting 1557570) about 10.25 or with dish 289 pistons about 7.5 and 8.5 respectively with the beaded steel head gaskets.

      The 67 cc's ( Casting 1557582) came on some trucks also and the 54 cc's ( Casting 1557570) were on most of the '63, and '64 cars and a few of the '62's.

        Casting 1537555 = 8.0 used on '55-'62 with composition head gasket and about 54.5 cc>

      Index

      Casting 1557582 = 7.0 supposedly used on some trucks and are also the R 2 with 67.7cc

      Casting 1555294 =7.75 used on '62 with the composition head gasket

      (Note 1) Casting 1557570 = 8.25 used on very common '63 and '64 with the beaded steel head gasket and also
      Used on the R1 engines and have about 54.5 cc but also heard one time they
      were 58 CC but I think the 54.5 is closer.
      1557570 the '63-'64 Lark, Hawk 259 & 289 and R1 Avanti casting number Head. Ref . (29222107)

      Casting 1557581 = 8.0 and also used on '63 and '64 but with the composition gasket

      The beaded steel gasket will give almost a half point higher compression
      ratio. The beaded steel is about .017" thick and the composition about .045 (compressed).

      Ted Harbit (Oct 99)

      On the cyl head center exhaust ports there is a raised number CAST in the iron in between the head bolts. Not a stamped number.

      It can be read without removing anything , except maybe dirt. It is not the part number you find in the books, but it is what most of us use to identify matching pairs of heads.

      Except for the very uncommon R2 heads (582, which have big combustion chambers), the uncommon 1951 to 1954 232 heads (really tiny valves), and the super-rare tall-port R3 heads, ALL the rest (976, 570,555,etc) are pretty much the same- mid-50's cc's, same valves, etc. All the different compression ratios in the books were a function of stroke, and different piston dishes as much if not more than the small variances in head cc's.

      Index

      Mar08
      The highest compression are the 537555 and 1557581 heads and were about 8.5 with the beaded steel head gaskets or about 8.0 with the composition. You can deduct between .4 and .5 for the composition gaskets compared to the beaded steel.

      535976 heads were about 8.0 with beaded steel gaskets. These were used
      on the Golden Hawks (exc 56J) (among some other models including Export) and
      with the composition gaskets were about 7.5. compression with Composition
      gaskets and some trucks and were about 56.5 cc

      Index

      1557570 heads (used on most '63 and '64 and are R 1 heads) and 1555294 were about 8.25 with the beaded steel gasket. The 1557570 used with flat top pistons in the R 1 give 10.25 with the steel gasket.

      1557582 heads were about 7.5 with beaded steel (These are R 2 heads that give 9.0 with flat top pistons).

      The 537555 and 1557581 have about 54 cc chambers and the 1557582 heads had the most at 67.7 cc's.

      These figures should be about right for all 259 engines and the 289's with dish pistons. And you can vary the compression on the 289 since you can get "cup" pistons that have about half the cc's as the dish pistons (or flat tops if preferred).

      I think I have these right. Ted

      Index

      David LeVesque (OCT99)

      Casting # 1557570 is part # 1557571. It was used in most R1's. With the flat top pistons, and head gasket 1545072, it gave a 10.25 : 1 compression ratio. It was the "standard" R1 head in the sense that almost all R1's came with it. It was also used with dished pistons in other engines. Casting # 1557582 is part # 1557580. It is shown in the Dec. '63 Avanti parts book as the R2 head; and also "spec. order" on R1's. As used, R2 or R1, it gave a 9: 1 compression ratio. I've read it was used in lower compression trucks, too.

      On some lists of head #'s, (John's, if 1557580 is a part #), the lower compression, (9 : 1), R1 is listed as "standard".
      Mike M. Jan 2006

      Index

      OHV Engines

      I only have two different OHV head casting numbers in my files, there may be more that I haven't found yet. The casting numbers are at the rear of the head between two head bolts. One would have to remove the valve cover to see them.
      1550582 is the most common and was used from 1961-63. The heater hose outlet is at the left rear on this head. 1560959 is a 1964 head, and has the heater hose outlet at the left front.
      The date code is also under the valve cover, but at the very front. The 'P' you saw was probably part of that date code. Should have been a couple numbers there before the letter, but sometimes they get ground down during the machining process.
      jdwain@gmail.com Oct 2007)



      .(*N)...these casting numbers are also the part numbers in the chassis parts book! This is somewhat of an oddity because Studebaker hardly ever did this. (jdwain@gmail.com )
      64-OHV The 1961-63 head is casting #1550582 and part #1553551 with heater outlet at left rear. This head was eventually superceded by the '64 head: casting #1560959 and part #1561582 with heater outlet at front. Ref . . (29222107)
      Index


      How to identify cylinder head compression ratios - Studebaker Engines

      Combined and condensed 05012018

      (Compiled by Blacksunlight.com)


      Engine type Part # Casting # Location Ratio Gasket
      "L" Head 1549218 1549218 Right Center 8.0-1  
      "L" Head 1548294 1548294 Right Center 7.0-1  
      OHV Head 1561582 none none 8.0-1 1558948
      V8 537571 537555 Outside Center 8.0-1
      8.5-1
      535982
      1545072
      V8 536097 535976 Outside Center 7.5-1  
      V8 536790 Use 1557580   7.0-1  
      V8 1555295 1555294 Outside Center 8.25-1 1545072
      V8 1557580 1557582 Outside Center 7.0-1
      7.5-1
      535982
      1545072
      V8 15557571 1557570 Outside Center 9.5-1
      10.25-1
      535982
      1545072
      V8 1557579 1557581 Outside Center 8.0-1
      8.5-1
      535982
      1545072
      OHV 1561582 none none 8.5-1 1550608
      Note: Gasket 535982 is .050 thick and gasket 1545072 is .020 thick


      How to identify cylinder head compression ratios - GM Engines


      Engine type Part # Casting # Location Ratio
      194 (1965) 1564874 3864888 #5 Cylinder 8.5-1
      194 (1965) 1564875 3864886 #5 Cylinder 7.5-1
      194 (1966) 1565707 3872704 #5 Cylinder 8.5-1
      194 (1966) 1565708 3872708 #5 Cylinder 7.5-1
      230 1565708 3872708 #5 Cylinder 7.5-1
      283 (V8) 1564859 3814480 2nd Last Cylinder 7.5-1
      283 (V8) 1564435 3795896 2nd Last Cylinder 9.25-1