360 question

[Marko]

hey so my Intake on the 360 is a Torker 340 Intake how could i see if they are 340 heads? what numbers and where can i see this stuff on the heads?

 

[goldduster318]

The casting number on the heads is typically cast onto the top of the intake ports, which would be visible if you removed the valve cover.

 

[green1]

The x is outside, between spark plug holes

 

[Marko]

Dunno if this is perfect i'd need braile to get number is L071051 some 0068 stamped on the other side and on the Rockers 89L and 89R if that works?

 

[2 Darts]

Dunno if this is perfect i'd need braile to get number is L071051 some 0068 stamped on the other side and on the Rockers 89L and 89R if that works?

The casting number is hard to read with the valve train in place. Casting number 4021051 is one of the two 360 castings used from 77-86. The factory installed valves are 1.88/1.60 (intake/exhaust) and has a 66cc chamber volume. The same size valves were used on the 72 and 73 340. Your heads will have hardened valve seats, something only the 73 340 had.

These heads have the larger intake and exhaust passages that will allow using 340 intake and exhaust castings with little to no problem. Supposedly, the heads can be opened up to accept the 2.02 intake valve that was used from 68-71.

 

[Marko]

Ok the L kinda does look like a 4 and same as the 2 stupid thing is real hard to see assembled lol.

 

[fishy68]

If they are really 340 heads there's only 2 possible casting numbers. 3418915 and 2531894. Sounds like you probably have the 4021051 castings 72Demon mentioned.