Small Block Head Flow Chart

I recently had a set of SBM Victors come into the shop.

These had been purchased several years ago when you could actually get them.
The version I had here were bought as bare w/o valves.
In that configuration they come with the guides unfinished and the seats uncut.

They were here to have the guides sized and the seats cut.
They got set up for Ferrea 2.15/1.60 valves.
I was pretty surprised with the flow.

No back cut on either valve, and no blending of the seats to the bowls.
The bottom of the bottom angle landed perfectly into the cnc’d intake bowls.
The bottom of the exhaust left the tiniest of edge where the bottom of the radius met the bowl.
The owner has the capabilities to do that minor blending, but it would only be maybe a minute per hole to get it blended perfectly.

Both ports were very stable and smooth sounding.
Hopefully they’ll find their way back into production.

28”/4.155” bore/no tube on ex, no back cuts, Ferrea 2.15/1.60 valves, PRH machined seats:

Lift——- I/E
.100—- 76/57
.200—-145/114
.300—-219/166
.400—-280/197
.500—-322/215
.600—-348/227
.650—-351/231
.700—-356/234
.750—-361/236
.800—-365/238
.850—-368/241