Evidently I have some kind of ba5tard block then. I have a Hemi Mega Block, that has the upper row of bosses (inside the valley), and I am running it in my car right now, with 440-1 heads, using Fel-Pro 1105 gaskets. This block was still in the new in the Mopar crate when I got it from the original purchaser, who bought it from Indy Cylinder heads. I had to plug the drain holes in the corners of the block, otherwise no issues.
Sounds like a Wedge Megablock to me. It’s the same casting as the hemi, just machined different.
The hemi oil return holes get covered by the head gasket and head. I believe there are felpro gaskets just for mega blocks.
Years ago Tom Hemphill, RIP, offered to convert a hemi mega block I had into a wedge and made it sound simple.
This is felpro 1039
1039 is right, I bought the 1105 and it wouldn't work. They're sitting on the shelf. I just checked my receipts, but had 1105 on the brain earlier. I never knew they were the same block. I bought this one from Tom Benzenhoefer in OH and he told me the Wedge mega blocks didn't have the drains in the corner. He had bought two of these blocks from Indy and was supposed to build two motors for a customer, but only one ever got done. Now I'm wondering if Indy got the block as an unfinished casting, or ???
I have two other Hemi Mega Blocks, one I bought new (World) and an older one from an S/S car. I never tried mix matching pieces between the Wedge and them, so I learned something.
Funny you mention Hemphill, I just got done fitting a sheetmetal tunnel ram he built on this motor. Older piece, but nice, and certainly an upgrade over the 440-3. I have the receipt from when Tom built the intake, and he did a set of Max Wedge port 906's at the same time...so I can see why the Hemi to Wedge deal would be something he'd consider "simple".
