Straight Aluminum Water Neck & 180 Degree High Flow Thermostat

Ask a Question

Die-cast, polished aluminum, ring sealed water neck
Fits Chevy V8s '55-'86 accepts normal GM thermostats and 1 1/2" I.D hoses
Strongly recommended for any performance application

$40.99

In Stock

Add to a list

Select a vehicle to verify Fitment

Select Vehicle

Product Summary

Chevy Small Block V8, 4.00" Overall Width, Aluminum

Die-cast, polished aluminum, ring sealed water neck
Fits Chevy V8s '55-'86 accepts normal GM thermostats and 1 1/2" I.D hoses
Strongly recommended for any performance application
Modified for high RPM/high flow applications, 180° temperature range
Includes hardware

Comes as a Kit

View Kit Components

See more details

Key Specs

MFG. Part #	9100578
Material Type	Aluminum
Finish	Painted
Gasket(s) Included	No
Hardware Included	Yes

See more specs

Need To Know

Free Shipping on Orders Over $149

Need help?

Quick and Easy Returns

Speedway Motors 9100578 Details

Thermostat Housing

This water neck includes 2 stainless steel bolts and o-ring gasket. Constructed from aluminum and features a painted black finish. Straight angle and has a 1 inch tube length. Sold each.

4" overall width
2.15" overall height
1.5" hose inside diameter
Straight angle
1" tube length
1.25" tube inside diameter
Aluminum construction
Painted finish
Black in color
Hardware Included
Includes o-ring

Thermostat

Speedway takes a quality Robertshaw 330-180 high flow 180° thermostat, then modifies it to function properly in high RPM, high flow applications. They feature a balanced sleeve design and are strongly recommended for any performance application. Fits most domestic applications.

2-1/8" diameter
High flow 180° thermostat
Balanced sleeve design
Recommended for any performance application
Fits most domestic applications

Learn more about the importance of the thermostat with cooling systems and how they work by reading our tech article, Cooling System Principles.

Speedway Motors 9100578 Specifications

KEY SPECS
MFG. Part #	9100578
Brand	Speedway Motors
Material Type	Aluminum
Finish	Painted
Gasket(s) Included	No
Hardware Included	Yes

GENERAL
Overall Width	4.00"
Overall Height	2.15"
Hose ID	1.50"
Angle	Straight
Tube Length	1.00"
Tube I.D.	1.25"
Color	Black
Sold in Quantity	Kit
Notes	Includes O-Ring