Chrysler Early Hemi Finned Aluminum Valley Pan | 331 354 392 (1957–1958)

Chrysler Early Hemi Finned Aluminum Valley Pan – 331, 354, 392 (1957–1958)

Upgrade your Chrysler Early Hemi engine with a premium cast aluminum valley pan designed for both performance and period-correct styling. Featuring a classic finned design cast from the original M/T wood pattern, this valley cover adds authentic vintage character to traditional hot rods, nostalgia drag cars, and high-end restorations.

Built for strength and precision sealing, this valley pan is machined for consistent gasket fitment and engineered with 5/8" thickness to help maintain reliable sealing under demanding conditions.

Compatible with Chrysler 331, 354, and 1957–1958 392 Hemi engines, as well as select Polysphere applications.

Fitment

Designed for Chrysler Early Hemi engines including:

• 331 Hemi
• 354 Hemi
• 392 Hemi (1957–1958)
• Select Chrysler Polysphere applications

(Confirm exact application before ordering.)

Key Features

• Classic finned design 
• 356 heat-treated sand-cast aluminum
• 5/8" thick casting for improved gasket retention
• Fully machined gasket sealing surface
• CNC-profiled perimeter for consistent fitment
• Counterbored fastener holes for a clean, finished appearance
• Shot-peened matte finish (polishing optional)
  

Integrated Fill Cap System

Includes a -18 (1-1/2"-12) billet aluminum fill cap with Buna-N O-ring for secure sealing and easy access.

What’s Included

• (1) Early Hemi valley pan
• (1) Billet fill cap
• (8) Stainless cap screws

Finish Options

• Polishing available (adds additional lead time)

Manufactured in the USA

This finned Chrysler Hemi valley cover is ideal for traditional hot rods, early Hemi drag builds, and period-correct 392 restorations. Pair it with matching finned valve covers and timing covers for a complete vintage Hemi engine dress-up package.

Frequently Asked Questions

Will this fit a 1957 392 Hemi?
Yes, this valley pan is designed for 1957–1958 Chrysler 392 Hemi engines.

Is this compatible with a 331 or 354 Hemi?
Yes, it fits Chrysler 331 and 354 Early Hemi engines.

Does it include a fill cap?
Yes, a billet -18 fill cap with Buna-N O-ring is included.

Is this cast or billet?
This valley pan is manufactured from 356 heat-treated sand-cast aluminum.