Customer Appreciation Week 2026

Small Block Chevy 90 Degree Swivel Neck & 180 Degree Thermostat

Customer Appreciation Week 2026

#9100552

Small Block Chevy 90 Degree Swivel Neck & 180 Degree Thermostat

Die cast, aluminum, ring sealed water neck
Fits Chevy V8s '55-86 accepts normal GM thermostats and 1 1/2" I.D. Hoses
Includes hardware

Finish / Angle:

Black / 90 Degree

Black / 15 Degree Black / 45 Degree Black / Straight Polished / 45 Degree Polished / 90 Degree Polished / Straight

$39.99

In Stock

$43.99

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Product Summary

Universal Fit, 1.50" Hose ID, 90 degree Angle, Aluminum

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

Comes as a Kit

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Key Specs

MFG. Part #	9100552
Material Type	Aluminum
Finish	Painted
Gasket(s) Included	Yes
Hardware Included	Yes

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Speedway Motors 9100552 Details

Water Neck

This 90 degree swivel water neck fits SBC & BBC V8 engines. This water neck includes 2 stainless steel bolts and o-ring gasket.

SBC & BBC V8
90 degree swivel
Includes 2 bolts & o-ring gasket

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 9100552 Specifications

KEY SPECS
MFG. Part #	9100552
Brand	Speedway Motors
Material Type	Aluminum
Finish	Painted
Gasket(s) Included	Yes
Hardware Included	Yes

GENERAL
Hose ID	1.50"
Angle	90 degree
Color	Black
Sold in Quantity	Kit
Notes	O-RING .157 X 1.969 ID ,204-150 (910158211)

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