JBA 65-73 Ford Mustang 260-302/71-73 Ford 260-351W SBF 1-5/8in Primary Raw 409SS Long Tube Header

6613S

• 3/8" thick CNC laser-cut flanges
• Patented JBA Firecone® collector
• Large diameter mandrel-bent steel tubes
• Oversized exhaust ports

INSTALLATION NOTES

Instructions: Instruction Sheet

Estimated Installation Time: 4 hours

Installation Footnotes

23 - Will not fit P-Head.

29 - Matching mid-pipes available.

48 - Fits 5 speed transmission w/ aftermarket cross member.

58 - Fits Ford AOD Transmissions.

62 - Does Not fit 71-73 factory 4 speed clutch linkage.

63 - Will work with Hydraulic clutch or factory Z-bar.

JBA long tube headers are the number one choice for maximum performance gains and high RPM efficiency. These long tube designs are dyno and race proven to deliver the greatest possible increase in horsepower and torque throughout the RPM range. All JBA long tube headers feature large mandrel-bent stainless steel primary tubes, oversized exhaust ports, extra thick 3/8" one piece flanges, and patented JBA Firecone®* merged collectors for smooth flow. Each system is designed to give the maximum amount of ground clearance possible so lowered cars do not drag the collectors. Each system includes high quality hardware and thorough instructions for a professional no-leak installation. *Standard on 4-1 long tube V8 applications. Not available on Tri-Y headers. 1. 3/8" thick CNC laser-cut flanges • Prevents leaks caused by warping 2. Patented JBA Firecone® merged collector • Increased hp/tq, improved exhaust scavenging 3. O2 sensor provisions • Standard on EFI headers for proper connection 4. Large dia. mandrel-bent stainless steel primary tubes • Maximum flow and high RPM efficiency 5. Oversized exhaust ports • Accommodates ported cylinder heads