Buick Nailhead Finned Aluminum Timing Cover | 264 322 364 401 425 (Weiand Style)

Buick Nailhead Finned Aluminum Timing Cover – 264, 322, 364, 401, 425

Complete your Buick Nailhead engine build with a finned aluminum timing cover inspired by the legendary 1960s WEIAND “Say WHY-AND” casting. This tribute reproduction delivers authentic vintage styling while providing modern machining precision and improved serviceability.

Designed to clear most timing chain and gear drive setups, this Nailhead timing cover blends nostalgia with performance. A cast-in boss allows mounting of a cam-driven fuel pump or water pump, or it can be blocked off for custom applications.

Whether you're restoring a 264, 322, 364, 401, or 425 Nailhead, this timing cover adds period-correct character and functional versatility to your build.

Fitment

Compatible with Buick Nailhead engines including:

• 264
• 322
• 364
• 401
• 425
• Fits both pre-1958 blocks (requires upper dowel removal)
• Fits 1958 and later blocks

(Confirm application prior to ordering.)

Key Features

• Tribute reproduction of original 1960s Weiand “Say WHY-AND” casting
• Classic finned vintage design
• Clears most timing chain and gear drive setups
• Cast-in boss for cam-driven fuel or water pump (can be blocked off)
• Can be tapped for water inlets
• Height: 2-5/32" to pump face
• CNC-profiled perimeter for consistent fitment
• Shot-peened matte finish (polishing optional)
• 356 heat-treated sand-cast aluminum (not die-cast)
  

What’s Included

• (1) Buick Nailhead timing cover

Finish Options

• Polishing available (adds additional lead time)

Manufactured in the USA

This Buick Nailhead aluminum timing cover is ideal for traditional hot rods, vintage drag builds, and high-end 401 or 425 restorations. Pair it with matching Nailhead valve covers and dress-up components for a cohesive, period-correct engine bay.

Frequently Asked Questions

Will this fit a 401 Buick Nailhead?
Yes, this timing cover fits 401 Nailhead engines.

Does it work on early 322 or 364 engines?
Yes, it fits 264, 322, and 364 Nailhead engines. Pre-1958 blocks require upper dowel removal.

Will it clear a gear drive?
It clears most timing chain and gear drive setups.

Can I run a cam-driven fuel pump?
Yes, the cast-in boss allows mounting of a cam-driven fuel or water pump, or it can be blocked off.