1 531 PLUG NIPPLE ELBOW SUPPORT FLANGE TEE GASKET RlNG ADAPTER CLIP CONNECTOR Oil Pipe ond Tube ll 55 58 ALL 6 cyl oil pressure alum or copper 4 O D x 4 O L 3764579 1 05 NOTE Required when any 1959 6 cyl block or short motor is installed in 1955 58 models Reduces full pressure oiling to restricted flow Also requires BOLT 3764578 in group 0 293 at right hand center bolt location 55 59 Ser 4 5 6 7 8 8 cyl 58 59 Ser 9 10 60 66 ALL 8 cyl exc 366 oil pressure and tappet gallery in block 4 dia cup shaped 3701638 A R 05 58 65 ALL 348 409 oil holes in left side of cyl cup shape 4 O D 3736407 4 05 58 ALL exc 10F 60 61 ALL 6 cyl oil press pipe in block gz O D 63 66 Ser 50 60 6 cyl block main oil gallery frt hole 3835577 A R 03 61 62 ALL 6 cyl oil gallery hole 34 18 thd 6 sq socket 444782 2 8 971 63 66 Ser 50 60 6 cyl oil pressure regulator hole 4 x 4 3789431 1 05 65 ALL 351 478 66 Ser 50 351 exc TILT 66 Ser 60 478 exc TDM oil gallery hole 24106240 5 05 65 ALL 351 478 cyl and case or hole cup type 46 dia 23815420 1 10 55 57 ALL 6 cyl NIPPLE tappet oil gallery to rocker pipe front and rear X taper pipe and Z 24 thds flared tube type w steel pipe 839926 1 35 62 LCF DIESEL 62 TILT DIESEL exc I Beam axle 63 66 Ser 80 318 ELBOW oil pump inlet 5126453l 1 1 14 62 64 Ser 60 212 65 66 Ser 60 TILT 212 SUPPORT oil pump inlet tube 510946 1 91 62 TILT DIESEL 62 LCF DIESEL exc I Beam axle SUPPORT oil pump inlet tube 5108356l 1 2 45 62 LCF DIESEL w I Beam axle 63 66 Ser 80 318 SUPPORT oil pump inlet tube 5162804l 1 1 62 62 66 Ser 50 60 159 212 FLANGE oil pump inlet tube K 5119425l 1 18 62 LCF DIESEL 62 TILT DIESEL exc I Beam axle 63 66 Ser 80 318 FLANGE oil pump inlet tube 5126454l 1 19 65 Ser 60 80 TILT 348 66 Ser 80 TILT 366 TEE lower pipe 3766563 1 3 875 62 66 Ser 60 212 65 66 Ser 50 159 GASKET oil pump inlet tube flange 5175568l 1 14 62 LCF DIESEL 62 TILT DIESEL exc I Beam axle 63 66 Ser 80 318 GASKET oil pump inlet elbow 5126473 I 1 05 62 66 Ser 60 212 RING oil pump inlet tube seal white 65 66 Ser 50 159 stripe 1 46 O D 5127175l 1 24 62 LCF DIESEL 62 TILT DIESEL exc I Beam axle 63 66 Ser 80 318 RING oil pump inlet tube seal 5126492l 1 26 65 66 ALL w Air Brake 478 exc TDM 65 Ser 80 TDM ADAPTER oil pressure gauge pipe 23899840 1 95 65 LCF w A O I I B 478 65 66 TILT w Tach Oil Press Gauge CLIP oil pressure gauge upper pipe at 478 exc A O I I B W S wiper and same at dash mat 24435240 A R 15 65 66 TILT 212 351 CONNECTOR oil press gauge upper 74 20 x 4 27 125620 1 8 963 Q 1966 Chevrolet Motor Division l 53l General Motors Corporation 1 75 HDT REVISED MAY l 1966