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Join Date: Mar 2006
Location: San Jose, CA / Miami, FL/ Racing in: Guatemala, El Salvador, & Costa Rica
Posts: 144
Question Difference between headers fitment for 89 and 91?

Hello,

Does anybody know what the differences are between a header specified for an 89 and the ones for a 91? To me they look the same... port diameter mesurements?

I'm looking into GHL, OBX, and GoingSuperFast with no heaters.

GB
Old 03-08-2007, 10:31 AM
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Join Date: Jan 2007
Location: Boca Raton, FL
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The heater boxes are what make the diffrence. On the 91', the outlet tubes for the heat are wider than the 89' cars and I believe the inlets are diffrent as well. If you dont need heat, I dont think it matters.
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86' 930/GT-40R Sold
94' Rustang GT daily (long gone)
2008 C6/Z51 Corvette
Old 03-13-2007, 07:52 PM
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They might be different to allow the oil filter to be got at easier.
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1981 UK 930. G50/01 shortened, 964 3.8RS Fibreglass Body Kit, 18" Alloys 8.5" F & 10" R, 225's F & 285's R, Special Colour Metallic Blue Paint, FIA Sparco Evo's, A/C and Air Pump removed, Electronic Boost Controller, GHL Headers, Tial46 WG.
Fitting - New service kit.
Needs Fitting - Innovate XD-16 Kit, Kokeln IC. Stephen's K27 HFS, EVO Intake Assy & his Modded USA Fuel Head.

1983 UK 911 3.2 Carrera Sport Coupe. Black, Black Leather with Red Piping, Black Alloy Gear Knob, K&N Air Filter Element, Turbo Tie rods.
Needs Fitting - K&N CO Sensor, Round A/F Dial Gauge, Factory Short Shift Kit.

http://www.danasoft.com/sig/Iamnotanumber.jpg
Old 03-14-2007, 02:25 AM
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