JBA Performance Exhaust

Technical Information :: 6651S Tri-Y Headers

JBA Equipped - Austin Bittle's ‘69 Mustang .
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JBA p/n 6651S headers are designed to fit ‘64-1/2 - ‘70 289/302 (not Boss) Mustangs equipped with 4 spd manual or C3/C4 automatic transmissions. These headers are not designed for 5spd applications.

These headers provide significant increases in torque and horsepower throughout the RPM range and allow for maximum ground clearance.

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

Note: These headers will work with a stock mechanical clutch using the factory Z-bar Ford p/n C577-7528-E used on 65-66 Mustangs (non-Hipo). If Z-bar is modified or worn use JBA p/n 1650Z. These headers have mandrel-bent collectors for trans. cross member clearance.

*actual product may differ from product shown

:: P/N 6651S Fitment Guide ::
Specifications: 1-1/2" stainless steel primary , 1-3/4" secondary, 2-1/2" collector, 3/8" laser-cut flanges
Engine	Cylinder Head	Trans. cross member	Block	Clutch	Trans.
289/302	289/302/5.0 "Windsor" Stock Port location	Stock	Stock. - OK	Stock mech. with factory Z-bar or use JBA p/n 1650Z	4 spd or C3/C4 auto
Motor Mounts	Bell Housing	Starter	Suspension	Steering
Stock or Total Control	Stock 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 Total Control Rack & Pinion - OK Factory P/S - OK with JBA Bracket P/N 6656P