[STEELCITYFIREBIRD]

SO, lay the gasket paper on the block, tap the inner circumference of the dizzy hole with a ball peen hammer till thru paper.
Once you tap the inner hole thru an appropriate gasket paper, slip the dizzy thru and trace the OD of the dizzy body with a pen.
Cut the od with good scissors or shears.

You MAY find another engine dizzy gasket that will work... our in house dizzy expert... SUN TUNED, can likely tell you what engine has a similar size if you don't want to make your own.

IIRC a FE 352-428 Ford is rather large.

I make gaskets often at work for old equipment, don't even both to try and source them, can't be down that long.

[sdbob]

The block is definitely heavier not sure exact weight difference. When I bought gaskets I ordered individual part nos from Pontiac dealer in mid 70s.

["QUICK-SILVER"]

Originally Posted by STEELCITYFIREBIRD

SO, lay the gasket paper on the block, tap the inner circumference of the dizzy hole with a ball peen hammer till thru paper.
Once you tap the inner hole thru an appropriate gasket paper, slip the dizzy thru and trace the OD of the dizzy body with a pen.
Cut the od with good scissors or shears.

I think what they're saying here is the clamp down ring on a standard distributor is about the same size as the hole in a SD block. ID and OD of the gasket ends up extremely narrow.

A thin sheet metal ring/washer/gasket (regular distributor ID and SD gasket OD) installed before the adapter sleeve goes on would give more sealing area.
Use two gaskets or glue/epoxy the ring to the distributor.
A thick ring would require cutting that amount off the distributor to keep height close to right.

I think too much and got plenty of time.
Clay