SB Chevy Double Bump Heads (rebuilt) - $600 (Sobieski)

SB Chevy Double Bump Heads (rebuilt) 1 thumbnail

condition: excellent

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For sale is a pair of rebuilt "492" double bump small block Chevy heads, part #3991492. They have the 64 cc closed chambers, new 2.02" 1.60" valves, 7/16 screw-in studs, 5/16" guide plates, & new 1.460" valve springs. The decks have been lightly resurfaced & valve guides replaced. The threaded holes all have good threads. These are the straight spark plug version. The 1.460" diameter valve springs give you the option of running an aggressive roller cam with lift up to .600".

These heads are ready to install & perform.

Give me a call or text if you have any questions or interest. (text is best) Thanks for looking. Greg.

post id: 7995273633

posted: 2026-11-04 14:07

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SB Chevy Double Bump Heads (rebuilt) - auto parts - by owner -...

For sale is a pair of rebuilt "492" double bump small block Chevy heads, part #3991492. They have the 64 cc closed chambers, new 2.02" 1.60" valves, 7/16 screw-in studs, 5/16" guide plates, &...