Olds intake manifold #'s
Casting Code Year(s) CID Application/Notes
384439 '65 400 4V All. Square-bore carb mount. Iron.C
387958 '66 425 4V Toro. Spread bore carb mount. Divorced choke.E
390390 '66-'67 400/455 Including 4V W-30. Early 400, other BB's except Toro up to 68 or 69 or so. Iron.F
393238 '66 400 L-69 3 x 2. Easy to spot by the 3 carb holes. A pair of roughly square covers, one on either side of the center carb, bolted to the top of the exhaust crossover passageway. Each cap should have four bolt holes but only be held on with two bolts. These are the exhaust crossover blockoffs. Iron. G
397357 '67 425J
398662 '68-'69 400/455 4V All including W-30 and 68 H/O. Except Toro, 69 H/O. Iron.K
398664 '68-'69 455 Toro.?
405233 '69 455 H/O. Very rare, obviously. Only 1 application. Features a provision for the pcv valve directly in front of the carb (in a hole behind the coolant crossover, similar to the arrangement used on the aluminum 70-72 W-30 intakes). Iron.?
406115 '70 455 W-30. "Oldsmobile W-455" in raised letters. Aluminum. "Olds W-455" on some.L
404521 '70-'72 455 H/O AT and MT. W-33, 442, SX, 88, 98's. Except W-30. Iron.P
407568 '71 455 2V AT. Vista Cruiser. No EGR. Iron.S
407569 '70-?? 455 4V Toro. Low profile. No EGR. IronR
407567 '70-'72 455 4V MT except W-30. No EGR. Iron.A
407570 '71-'72 455 W-30. "Olds W-455" cast in raised letters. No EGR. Aluminum.U
410448 '72 455 4V except W-30, alternate to R for '72. Iron.H
388625 2V. Iron. EGR.X
412493 '73-'76 455 Toro. Iron. EGR. "OLDSMOBILE" cast in.W
412753 '74 455 4bbl L-74, L-75. Iron. EGR. "OLDSMOBILE" cast in.Y
411990 ?? ??. EGR.Y
413111 '73-'76 455 All models, GMC motorhome. Iron.?
381920 '65 330 1V. Iron.?
398663 '68-'69 350 2bbl. Iron.?
406114 '70 350 4V. W-31 only. "OLDSMOBILE W-350" cast in.1
407571 '70-??? 350 W-31. Aluminum. ??? (need to verify)6
390327 '66 330 4V.
'65 330 2V. Iron.
404520 '70
398583 '70-'71 350 2V. Iron.
407564 '71 350 2V. Iron.
407565 '71 350 4V. Iron.
4085520 '71 350 4V. Iron.
410670 2V. Iron.
410446 '72 350
411880 '74-'77 350 all 4V. 88's. Iron. EGR. Raised letters "OLDSMOBILE" (5/8") on runner.
1606818 '75-'79 350 2V port injected EFI. Aluminum. EGR.
22503087 4V. Iron. EGR. for #1 and #4 cylinders. '77 has no letters. Iron.
22504086 '82-'85 307 4V. Aluminum. EGR. Large ports.A5
22528212 '85-'90 307 4V. VIN Y engines, not VIN 9 engines. Aluminum. EGR. Small ports.
22500203 Diesel. Iron. No EGR. Machined 3 1/3" opening at the front for the injector pump.
EA18743 '69 Experimental W-30. 4V. Aluminum. Divorced choke.
ER-13112 Experimental.
ER-38086 Experimental 350 CFI (central fuel injection). 2V. Aluminum. EGR. 3 bolt holes at base for injection unit. 2 bolt hole towers toward rear of manifold.
'65 330 2V. Iron.10
404520 '70
398583 '70-'71 350 2V. Iron.
407564 '71 350 2V. Iron.12
407565 '71 350 4V. Iron.
4085520 '71 350 4V. Iron.13 410670 2V. Iron.14
410446 '72
411880 '74-'77 350 all 4V. 88's. Iron. EGR. Raised letters "OLDSMOBILE" (5/8") on runner
1606818 '75-'79 350 2V port injected EFI. Aluminum. EGR.17
22503087 4V. Iron. EGR. for #1 and #4 cylinders. '77 has no letters. Iron. EGR.
A1 2V. Aluminum. EGR. Small ports. No casting number.
A2 '81 260/307 Aluminum. EGR. 2bbl single plane, ~1 3/8" barrels. Small ports. Some have no casting number.
22504086 '82-'85 307 4V. Aluminum. EGR. Large ports.A5
22528212 '85-'90 307 4V. VIN Y engines, not VIN 9 engines. Aluminum. EGR. Small ports.
22500203 Diesel. Iron. No EGR. Machined 3 1/3" opening at the front for the injector pump.
EA18743 '69 Experimental W-30. 4V. Aluminum. Divorced choke.A
ER-13112 Experimental. 3ER-38086 Experimental 350 CFI (central fuel injection). 2V. Aluminum. EGR. 3 bolt holes at base for injection unit. 2 bolt hole towers toward rear of manifold.
