[J.C.you]

Originally Posted by Ron Landis

looking at a Nocturne / black Tri-Power four speed 3.90 HD rear, metallic brakes. tach and not much else. PHS shows HD fan. Radiator and air cleaner. Ride and handling and HD Posi. Doesn't all that HD cooling come on a GTO optioned car anyway? This one has been sitting in a barn sans drivetrain for @ forty years...straight with NO rust! What is the correct engine code? I was thinking 76x? Mine has a big car engine but it's just a LeMans anyway. Anyone have a correct block and/or heads to sell? Intake is still with the car. Not overly concerned about date codes. Any help appreciated. Thanks in advance.

You will want the W in the code for the correct 4speed block. I am building two 64 tripower 4speed engines. One will be a stocker type and the other a ringer. One of my blocks has the W stamped before the 76x, or W76X and the other stamped as 76XW. Anyone seen this before? Will get a couple of pics and post.

I may part with one of these longblocks. Preferably the stocker build.

[Ron Landis]

Originally Posted by J.C.you

You will want the W in the code for the correct 4speed block. I am building two 64 tripower 4speed engines. One will be a stocker type and the other a ringer. One of my blocks has the W stamped before the 76x, or W76X and the other stamped as 76XW. Anyone seen this before? Will get a couple of pics and post.

I may part with one of these longblocks. Preferably the stocker build.

Research shows X block is 3-speed...XW or W added in front of the number sounds like what was explained to me as the factory using 3-speed leftover blocks in four speed cars. Now...the plot thickens. PHS on this car lists it as an M-20 car...but lists the engine code as 76x. Four barrel cars were 78x according to PHS, that is. That said...either would work for me...and also prefer the stock build. How much? And some details if you could. Much obliged!