Heith Farness
New Member
Need some help I’m building a 383/489 stroker 440 source.030 pistons they told me I could use 2.19 intake valves I’d like to use 2.20 has anyone used the speed master 2.20 aluminum heads with success for this combination
383/489 stroker
- Thread starter Heith Farness
- Start date
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Krooser
Building Chinese Free Engines since 1959...
No difference in those sizes...its a rounding error at most.
I wouldn't use a Speedmaster head on my lawn mower but some guys do.
I wouldn't use a Speedmaster head on my lawn mower but some guys do.
PRH
Well-Known Member
It’s not a rounding error at all.
There are both 2.19” and 2.20” valves.
As far as radial clearance goes...... the difference is .005” a side, so negligible.
The Victor heads(along with the SM copies) do in fact come with 2.20” valves.
There are both 2.19” and 2.20” valves.
As far as radial clearance goes...... the difference is .005” a side, so negligible.
The Victor heads(along with the SM copies) do in fact come with 2.20” valves.
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