Vintage NOS GM 3946074 1974 Aluminum Cylinder Heads 396/427/454 Snowflake

Part Number: GM 3946074

Offered for your consideration is this pair of handsome ‘new old stock’ (unused) aluminum big block heads in their original GM factory boxes. I do not know if these are truly unused or rebuilt heads. As you can see, these are ‘Winters Foundry ‘snowflake’ heads. Dated 6.14.74 & 10.1.74. While the parts numbers on the boxes read: GM 3946072, the heads are both numbered 3946074. These are classic ‘barn finds’. I personally wrestled these rascals down from the shop loft, where they were stored for the past 20 plus years.

These heads were meant to go into a ‘69 Vette (427), but due to poor health, the builder was unable to complete the project.

I haveprovided several photos to give you fairly good idea as to what's being offered and the overall quality and condition.

For the novice or intermediate ‘wrench jockey’ that may have compatibility questions, I suggest that you consult with an advanced ol’ school muscle car mechanic, in combination of in-depth online homework - PRIOR to placing a bid.

It is the buyer’s responsibility to confirm that these cylinder heads meet their build requirements.

Each head weighs exactly 28.8 lbs. (in the box).