[Tellyshavilli]

Too many birds , don't you read your IM's ?

Originally Posted by toomanybirds

Yes Bob, the early 74 intakes were LS2, not LS2X.

The early 74 SD cars used the left over 73 engine parts. You will find Nov-Dec 72 cast dates on the heads and block on the early 74 SD cars.

It seems that the supply of blocks ran out first as I have seen Jan 73 dated blocks on some early 74 cars. The intakes changed to the LS2X some time in Jan 74, I have seen 72 date coded heads on some late Feb 74 built cars.

I have not seen any intakes or heads cast in 74, all have 72 or 73 date codes. I have seen SD blocks cast in 74 (including SR blocks).

All 73 SD engines should have cast dates in Nov or Dec 72 on the block, heads and intake.

I have seen one 73 SD TA with a Jan 73 dated block, it was an obvious re-stamp.

If anyone has seen anything different than this, I would like to know.