Jump to content

New to the forum, looking for L20 head


Recommended Posts

Hey y’all! I’m new to the forum. My baby Blueberry (‘76 620) is currently in the shop getting her second rebuild in three years. Guess the previous owner thought it might be fun to put an L20B head on the L20 ¯\_(ツ)_/¯ so I’m looking for an L20 head if anyone’s got any leads🙃

Link to comment
  • Replies 4
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

The L20 was a much earlier 2 liter 6 cylinder L series engine. When the 4 cylinder L18 was increased to 2 liters it couldn't be called an L20 because there already was one, hence the L20 B.


If it's a '76 it will have a U67 head. L20Bs should have L20B heads on them, nothing strange there.


Second rebuild in 3 years!!!!! find a better shop!!!!!!!


What on that engine now? Look between spark plug #1 and #2 along the bottom edge. Should be U67. Heads are rebuildable too. Why replace it??? Does your shop know what it's doing????

Link to comment
  • 2 weeks later...

Sounds like you are misinformed, but that's ok!  As said above, the L20 was a 6cyl engine, the L20B is a 4cyl engine.  You can use just about ANY of the 4cyl L series cylinder heads (there are at least 8-10 different casting #'s), but you should choose based on what engine you have (L16 L18 L20B?), what compression ratio your engine is (dished, semi-dished, flat top, pop top/domed pistons) & what intake/carburetor(s) you are using.  Post some more info & I'm sure somebody can guide you!


Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...

Important Information

By using this site, you agree to our Terms of Use.