1952Pontiac.com Documents

Year	Main Bearing Journals				Connecting Rod Bearing Journals
Year	Journal Diameter	Oil Clearance	End Play of Shaft	End Play Held By	Journal Diameter	Oil Clearance	End Play
1949-54 6 Cyl., "L" Head	Note 1.	.0013	.006	No. 3	2.125	.0011	.010
1949-54 St. 8, "L" Head	Note 2.	.0013	.006	No. 4	2.000	.0011	.010
1955 V8, OHV	2.2498	Note 3.	.007	No. 4	2.250	.0019	.009
1956 V8, OHV	2.2498	Note 4	.007	No. 4	2.250	.0019	.009
1957-58 V8, OHV	2.6235	Note 5.	.007	No. 4	2.250	.0019	.009
1959-61 V8, OHV	3.00	Note 5.	.006	No. 4	2.250	.0015	.009

Note 1:	Note 2:	Note 3:	Note 4:	Note 5:
1950-54 6 Cyl. Main Bearing Journal Diameters	1950-54 St. 8 Main Bearing Journal Diameters	1955, OHV, V8 Main Bearing oil Clearance	1956, OHV, V8 Main Bearing Oil Clearance	1957-61, OHV, V8 Main Bearing Oil Clearance
Bearing No.1 -- 2.4989 Bearing No. 2 -- 2.5299 Bearing No. 3 -- 2.5294 Bearing No. 4 -- 2.6237	Bearing No. 1 -- 2.3737 Bearing No. 2 -- 2.4049 Bearing No. 3 -- 2.4362 Bearing No. 4 -- 2.4674 Bearing No. 5 -- 2.6237	Bearings No. 1,2,3 & 4 -- .0018 Bearing No. 5 -- .0021	Bearing No. 1 -- .0015 Bearings No. 2, 3 & 4 -- .0018 Bearing No. 5 -- .0021	Bearing No. 1 -- .0015 Bearings No. 2, 3 4 & 5 -- .0018