Bill Smith
Founder, 1929-2014
Speedy Bill
Since 1952
Speedway Motors Logo
America's Oldest Speed Shop ®


Moroso 20431 Big Block Chevy Conversion Oil Pan

SAME DAY SHIPPING! Most orders ship within 24 hours.

Material Type:
Sold in Quantity:
Liquid Measurement:
Dipstick Location:
Passenger Side
MFG. Part #:
Oil Inspection Plug:
Garage Sale:
Sump Style:
Wet Sump
Moroso 20431 Big Block Chevy Conversion Oil Pan
Moroso 20431 Big Block Chevy Conversion Oil Pan
Moroso 20431 Big Block Chevy Conversion Oil Pan
Moroso 20431 Big Block Chevy Conversion Oil Pan

Click image to enlarge



Q & A

What's in the Box

If you have ever tried to put a B/B chevy in a Tri-Five Chevy or Chevy II, you know there just isn't much room. This pan was designed to make the job a little easier. This pan has a 7 quart capacity (w/o filter) and accepts up to a 4-1/4" stroke with steel rods.

  • Pick-up 54524430 is required for installation
  • Notched rear sump clears steering linkage
  • Accepts strokes up to 4.250" with steel rods, 4.090" with aluminum rods
  • Compatible with most starter/flywheel combinations
  • 1/4" NPT Thread for dipstick assembly, suggested dipstick # 545-25971

Fits Mark IV style 396-454 (except Gen V and Gen VI) Big Block Chevy V-8s. For 1962-67 Chevy II (without power steering) and 1955-57 Chevys. Transmission MUST be in stock position.

Please see below for suggested oil pump pick-up.

Instructions (PDF)

Item Details

55-57 Chevy, 62-67 Chevy II
Passenger side dipstick.

You may also be interested in:

Big Block Chevy Oil Pump
(Part #577OP77HV)

High volume B/B Chevy oil pump. 22% more volume than stock. 5 bolt cover.  Requires a 3/4" Pickup.

NOTE:   If using this pump on a SBC motor, additional modifications may need to be made to the oil pan for clearance.

Lokar ED-5003 B/B Chevy Engine Dipsticks
(Part #4915003)
                        The best dipstick you can buy for your Big Block Chevy (BBC), except 502.
ARP Fasteners 235-1901 Big Block Chevy Oil Pan Stud Kits
(Part #1012351901)
                        Eliminate seepage and prolong gasket life with ARP oil pan stud. 170,000 PSI.  
ARP Fasteners 534-9501 Small Block Chevy Engine Fastener Kit
(Part #1015349501)

It’s easy to assemble a show-quality engine when you use ARP’s handy Engine & Accessory Fastener Kit. Virtually everything you need comes completely organized in one convenient package. More importantly, each and every fastener is superior in strength to the OEM bolts, and also significantly better than hardware grades (even Grade 8).

Plus, these fasteners are made of a specially alloyed Stainless 300 material, which has the added benefit of being virtually impervious to rust and corrosion. The stainless steel is polished to achieve a brilliant luster, and provides a distinctive, maintenance-free environment. Each kit has a dozen different type fasteners, all neatly organized and labeled in protective vacuum-wrapped packages. 

  • 12 point heads
  • Polished stainless steel 300 material
  • 170,000 psi tensile strength

Fits 1955-1986 265-400 c.i. Small Block Chevy (1987 & newer EFI engines may require additional fasteners). 

Note: Some bolts may be too short if using aluminum oil pan or valve covers.

 101-5349501 Data (PDF)

Moroso 24430 Oil Pump Pick-up for Big Block Oil Pan
(Part #54524430)

Oil pump pick-up for Moroso big block oil pan

Instructions (PDF)

Moroso 25970 Universal Dipstick
(Part #54525970)
Moroso Universal Dipstick

Instructions (PDF)

1965-90 B/B Chevy Fel-Pro Oil Pan Gasket Set
(Part #3441804)
                        Fel-Pro BBC Oil Pan Gasket for 1965-1990 BBC oil pan.
Moroso 25971 Stainless Dipstick
(Part #54525971)
Moroso Stainless Dipstick

Instructions (PDF)