Lse9x LS Swap 1-7/8 Long Tube Headers

1 7/8" runner diameter true long tube header designed specially for Ls Swapped e9x/e8x chassis (RWD subframe only).   Will fit 4l80e (requires ears trimmed on bellhousing), 4l60e, t56/6060 transmissions as well as many others.  Headers only, gaskets, bolts only, no other piping included. 

Features:

• 1-7/8" long tube runners (vs 1.75"" short runner of competitors)
• Stainless steel mandrel bent design with minimized runner welds. 
• 3" slip connection with velocity spike merge collector
• Fully welded runners to flange inside with ported opening 
• Designed for spark plug and wire clearance (see photos)
• Optimal starter clearance (can be removed with headers installed)
• Includes 2x MLS ls exhaust gaskets (not graphite JUNK)
• Includes 12x m8 flange bolts
• Headers have 02 bungs  on transmission side of collector to allow for various applications,
• Relocation of factory fuel line feed closer to frame rail required. 
• Headers may require slight trimming and modifications per application and engine location.
• Gen1 (plate style) lse90 swap mounts may require slight modification for clearance. 
• Installation from bottom, Support engine and remove engine mounts one at a time to install.  
• WILL NOT CLEAR 6 Bolt heads or block without modification to #1 runner on driver side. 
• Designed around RWD LSe90 mounts run it the engine far forward position for firewall and steering shaft clearance.  X-drive RWD conversions may need crossmember modifications of mount extension for forward engine mounting. 
• 1" thick oil cooler adapters only

(Warning) This is a RACE ONLY product manufactured and sold for installation on vehicles to be used solely for competition purposes. Once this part is installed, the vehicle may never be used, or registered or licensed for use, on a public road or highway. If you install this part on your vehicle and use the vehicle on a public road or highway, you will violate the Clean Air Act 203(a)(3), 42 U.S.C, 7522(a)(3) and may be subject to personal civil or criminal liability.

By purchasing you state that I have read and acknowledge the disclosure warnings regarding EPA/C.A.R.B., and interstate emissions compliance on our Terms and conditions page