What kind of rotators are on Oldsmobile heads?
Generally, heads with valve rotators and corresponding deep spring pockets (3/8″ wide retainer rather than 1/8″ retainer), have induction hardened exhaust seats from the factory. Some heads are rumored to have the rotators on the intake or exhaust values only.
How big are the heads on an Olds tractor?
K** 455 80 413191 Ka** ’73 – ’76 455 80 413191 Marine, irrigation, industrial, W-30/Toro, 442 4-speed replacement head. Most were big valve units. Notes:
What kind of head does a 1967 Oldsmobile have?
So, if your C head has a stamped ID like V2023456G in figures about ¼” tall, that’d be from a 1967 400-4V, possibly a W-30. If no such ID is stamped in, then it’s either a 68-69 C head, or a 1967 head from the left side of the engine. Check the other end of the other head.
How to tell if an olds Head is original?
For originality and number matching authentication, make sure your julian date codes fall before your car was produced. Look on your block to the pasenger side of the distributor for you block date. Then make sure your manifolds were cast within a few weeks of the block. [ Thanks to Tony Waldner for this information. Heads 1949 – 1964
Generally, heads with valve rotators and corresponding deep spring pockets (3/8″ wide retainer rather than 1/8″ retainer), have induction hardened exhaust seats from the factory. Some heads are rumored to have the rotators on the intake or exhaust values only.
So, if your C head has a stamped ID like V2023456G in figures about ¼” tall, that’d be from a 1967 400-4V, possibly a W-30. If no such ID is stamped in, then it’s either a 68-69 C head, or a 1967 head from the left side of the engine. Check the other end of the other head.
K** 455 80 413191 Ka** ’73 – ’76 455 80 413191 Marine, irrigation, industrial, W-30/Toro, 442 4-speed replacement head. Most were big valve units. Notes:
For originality and number matching authentication, make sure your julian date codes fall before your car was produced. Look on your block to the pasenger side of the distributor for you block date. Then make sure your manifolds were cast within a few weeks of the block. [ Thanks to Tony Waldner for this information. Heads 1949 – 1964