Old Venolia blower pistons .047 in the hole
 

Years ago I started to build a new 428 to replace the 455 in my 78 T/A. I started to build the motor and discovered the pistons were well down in the hole, a whopping .047.

I bought the used Venolia blower pistons (.990 pins) from the late Greg Merrick. He had passed before I used them so I couldn't ask him about it.

With that said, I shelved the project for a few years. I did find a set of BBC 6.660 rods and I do have a factory 428 crank with 2.20 rod journals. The pistons will still be .012 in the hole but it's usable.

Idea #1 build it with the 6.660 rod and spray it.

Idea #2 build it with the 6.625 (Eagle ESP .990 pin) rods and put a 6/71 blower on it.

Either way, I would be using my KRE aluminum heads on it with pump E85.

Attached is a old picture showing how far the pistons were in the hole. I believe this was the old style way of running blower pistons?

Thoughts?

Idea #3 A 6.700" rod and a thicker head gasket

Stan

The pistons would be out .028 so run a .060 headgasket?

Butler stocks .055 Cometic head gaskets. I have a set from them for a boost project.