Currently running a 235 with a 261 head. Recently found a 3836848 head, literally a barn find. It's dirty but hopefully rebuildable. How much of an increase in compression and noticeable power would the 848 head have over the 261 head I'm currently using?

The 261 head number is 3703570.

Last edited by Skooter; 12/10/2024 11:45 PM. Reason: added information
Matthew 6:33

1952 Chevy 1/2-ton 3100
Late '55 235/SM420/torque tube 3.55
Dalton Highway survivor (using original 216)
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