Hey everyone,

I know you guys are all about keeping things lightly modified or stock.

2 pretty straight questions for what could become a large modification (just to get me started).

I was told the engine in my 71 240z is a 260z engine/transmission. Are there any numbers on the block that would tell me what the truth is? Same for the transmission?

If it is a 260z, can I bore it to make a 280Z engine out of it (since a 280 is a bored 260, this makes sense, unless i'm missing something)?

The end result I want is a carbureted 280Z that runs well and fast with a 5 speed transmission, for as cheap as i can do it (i'm pretty good with a wrench, dad welds, need to hire boring/milling)

Thanks!!

Somewhere on the passenger side of the block you'll find a stamped indicator: L24, L26, L28 with the motor number following. My Z is in the shop so I cannot visually verify this, but memory sez I'm correct....

Look on the spark plug side of the block at the top for a flat area. It should be marked "L26" for a 260Z engine...L24 for 240Z engine.

If the engine is an L26 and it's running well why mess with it?

Chuck

The numbers will be above the 5 & 6 spark plugs.

Bonzi Lon

Edit: The numbers are BELOW the 5 & 6 spark plugs. :stupid:

Bonzi Lon

Check the head casting number at the same time. It's located between the #1 and #2 spark plugs, on the bottom of the head. Stock 260Z would be E88 (although stock '72-'73 240Z will be E88 as well).

thanks for the help!

it's an L26, with an E88 head. perfect. i appreciate the help!