Technical Information :: 1655 Mid-length Headers

JBA Equipped - 475HP Shelby G.T. 350SR
by Unique Performance


*actual product may differ from product shown

JBA p/n 1655 headers are specifically designed to fit ‘64-1/2 - ‘70 Mustangs equipped with 351W engines equipped with manual transmission and a cable actuated clutch.

The mid-length design of the headers provides significant increases in torque and horsepower throughout the RPM range and allows for maximum ground clearance. Ideal for cars with lowered suspension.

To help make sure you choose the correct headers, h-pipe and exhaust for your Mustang please refer to the chart below. If you still have questions, give us a call.

Starter tubes are available to mate your existing exhaust system to the headers. For best results use JBA p/n 1655H H-pipe.

:: P/N 1655 Fitment Guide ::

Specifications: 1-5/8 " 14 ga mild steel primary tubes, 2-1/2" Firecone® merge collector, 3/8 " laser-cut flanges

Engine Cylinder
Block Trans. X-member Clutch Trans.


Stock Port

Stock. - OK

Stock - OK
JBA p/n 1751, 1752, 1753 or 1754

Cable Clutch

4 spd/5spd

Motor Mounts Bell
Suspension Steering

Stock or Total Control

Late-model or scatter shield. Scatter shield may require clearance.

Stock or
mini starter

Reproduction upper A-arm
mounting studs may need to be shortened.

Manual - OK

Rack & Pinion - OK

Factory P/S - OK

Use JBA p/n 1655H