![]() He also added that A-body headers for 69-72 will fit, but will require hammering and grinding on the frame. LOVE THE BONUS Free Shipping over 199 + up to 15 off - use code: LOVE2SAVE. Dougs D-Port headers are for factory Pontiac heads. Make certain that whatever you purchase, it is compatible with the round port or D port heads you have. Due to the configuration of the exhaust ports, you must use Dougs round port headers. He said you would need an oil filter adapter to make those work, however. Most likely the heads won't be an issue, but it's still possible.Īn additional option is what he called the "factory long branch". Additionally, they were using heads in the early 70's that may or may not interfere with your header installation, as it was intended to discourage people from messing with the cats. He has also advised that if you really want headers, that GP headers *should* work, but they won't be a perfect fit. I have no reason to doubt his advice as he's done quite a bit of research on these things. This product is Not legal for Street or Off Highway use in California or in states that have adopted California Emissions Regulations and is only intended for Closed Course Competition use, except 1965 and Older US manufactured California Certified vehicles, 1967 or older US manufactured Federally Certified vehicles, or 1967 and older Foreign manufactured vehicles which may have any aftermarket add-on or modified part installed as long as the vehicle can still meet the tailpipe emission standards for the year of the vehicle and retain any original or retrofit crankcase control (PCV) devices and NOx device required for the year of the vehicle.An amigo of mine suggests running the Ram Air manifolds for your 455. Failure to retain any of these components, or use on any 1975 or newer catalytic converter equipped car would render this product Illegal for Street or Off Highway Use in California, or in states that have adopted California Emissions regulations and may only be used for Closed Course Competition. This product is Legal for use on 1974 and older non catalyst equipped vehicles and is considered a "replacement part" per California Air Resources Board regulations, as long as ALL emissions sensitive components are retained, including A.I.R., EGR, Heat Risers etc. Click Here for Edelbrock Aluminum Head Installation Sheet PONTIAC HEAD CHART CASTING NUMBER YEAR FACTORY APPLICATION CHAMBER VOL CCS EXHAUST PORT NOTEWORTHY ATTRIBUTES 528511 1958 370 62 D-Port 1.88/1.6 55. ![]() It is 50 State Legal when installed on the appropriate vehicle per the Manufacturer Application guide and Installation Instructions This Product has been granted a California Air Resources Board (CARB) "E.O" (Executive Order) Exemption, or is considered a Direct Replacement or Consolidated Replacement part. Exhaust manifold bolt kit for 1967-1981 Firebird models with 389, 400 and 455 Ram Air engines with D-port exhaust manifolds. The corresponding numbers and explanations are as follows: Doug's Headers uses a voluntary product identification program whereby all mission-sensitive products can be identified by placing numbered labels in product packaging and listing corresponding numeric codes next to each part number. The application guide above specifies which Emissions Code applies to this part. 1969 PONTIAC FIREBIRD PONTIAC Product Results Filters In Stock. ![]() ![]() Requires removal or modification of locking steering columns if equippedĮxhaust Gas Recirculation (emissions device) 789.00 Add to Cart Silver ceramic coated RM-2-OS Dport Ram Air factory headers.NOW in stock. Header fits with Milodon oil pans 30355, 31660 & 31665 PH3675 or equivalentįits Edelbrock Performer, RAM-Air, Super Duty and H.O. Pontiac 1970-1981 326-455 Firebird Round Port Headers for EDL Heads 1 7/8' Tube, 3 1/2' Collector Black Painted Item : DHE-D581-B.
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