Technical Information :: 6654S Tri-Y Long Tube Headers


JBA Equipped - J.Bittle's '67 Shelby GT-500
and Unique Performance Shelby GT-500E "Eleanor"

 

*actual product may differ from product shown

JBA p/n 6654S headers are designed to fit ‘67 - ‘70 390/427/428/428CJ Mustangs equipped with a 5 spd manual transmission and hydraulic or cable clutch. (High Rise, Med Rise, Low Rise, CJ and Tunnel Port)

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, h-pipe and exhaust for your Mustang please refer to the chart below. If you still have questions, give us a call.

Note : : 69-70 Mustangs with factory shock tower reinforcment plates may require clearancing of plates for proper fit. Will not fit GT 390 (14 bolt)

:: P/N 6654S Fitment Guide ::

Specifications: Stainless steel 1-3/4" primary, 2-1/4" secondary, 3" dome collector, 3/8" laser-cut flanges

Engine Cylinder
Head
Block Trans. Trans. X-member Clutch

390/427
428/428CJ

Stock Port
Locations
(8 or 16 bolt)

Stock
or
Shelby
Alum.

T-5 5 speed

Aftermarket

Requires, Hydraulic
or Cable

Motor Mounts Bell
Housing
Starter
Suspension Steering
H-pipe

Stock or Total Control

Modified or
Scatter Shield

Stock or
mini starter

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

Manual Rack - OK
Rack & Pinion - OK
Does not fit
factory power steering

Use JBA p/n 6654H