1970 - 1974 Firebird Exhaust Manifold Bolts Set, Round Port, Ram Air IV, HO, Super Duty, ETC PART NUMBER: HWR-2007 Our Price: 24.95. Round (166) Oval (33) D-port (31) SAP (28) Rectangular (4) Square (4) Get Results Collector Attachment. I don't believe you're going to see noticeable gains in a street application with a round port to make the hassle of redesigning your hot side worth it. 1969 - 1972 Pontiac Firebird Trans Am Ram Air IV, 455 HO Outer Exhaust Shroud Heat Shield PART NUMBER: ENC-2042H. Find PONTIAC FIREBIRD Headers and get Free Shipping on Orders Over 109 at Summit Racing Free Mount & Balance for Many Wheel & Tire Packages - Contact us for Details. Now, if you wanna have some header fun, put some big tube Hooker round port headers on a 69 GTO. Knowing you already have D ports which your hot side is designed around, I'd do either the Edelbrock D port or the KRE D port, which my preference leaning towards the KRE product. First Generation Pontiac Firebird (1967 - 1969) Headers or Long branch questions Jump to Latest Follow 7K. Classic Industries offers Pontiac Firebird Manifolds & Headers. Classic Industries offers a wide selection of Manifold for your Pontiac Firebird. There are 40 new and used 1969 Pontiac Firebirds listed for sale near you on with prices starting as low as 9,995. 1967-69 Camaro, 1968-72 Nova 396-502Ci Big Block Doug's Ceramic Coated Headers. The oil filter issue does not require the remote solution. 030 over 455, 6X heads and LBram air III manifolds. Slip fit (31) 3-bolt flange (29) Ball and socket flange (23) Weld-on (17) Get Results Price Range. Round (62) D-port (13) Oval (6) Get Results Collector Attachment. A: I have a 1969 convertible A/C bird with a. Find 1969 PONTIAC GTO Headers and get Free Shipping on Orders Over 109 at Summit Racing 20 Off 250 / 40 Off 500 / 80 Off 1,000 - Use Promo Code: GORACE. It would be wiser to just get some custom made headers and have them coated. With something like an s480 pumping an additional 14.7psi into it, you're in 4 digit hp territory. Shop 1969 Pontiac Firebird Headers and Exhaust Parts and get Free Shipping on orders over 149 at Speedway Motors. While the Ford Mustang and Chevrolet Camaro have been the automotive equivalent of McDonalds and Bu. I think the price for cast iron manifolds is around 500. That being the case, something like an SD 290cfm KRE D port with a properly sized cam in a normally aspirated 460" Pontiac will typically ring the bell between 550-570hp. I'd be more worried about a factory block holding together than I would be concerned about which port type I'd be using. Butler Built Pontiac Round Port 72cc Ram Air Aluminum Complete Cylinder Heads, Set/2 (0) Reviews: Write first review. In fact, I'd bet it would do it on a set of as cast D or round ports if you push the boost up a bit. That thing will probably make every bit of 1100 hp.to the tire, at about 15 psi on an aftermarket headed 455, regardless of what head is on it. I believe I've read before you run something like an s480, is that correct? Precision formed long transition collectors and long tube design.Street application? Probably minimal.Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process. 1994 FIREBIRD FORMULA FRED 381ci all-forged stroker (Callies Stealth, Oliver billet rods, BME 2618-T61 nitrous pistons) - 10.8:1 - CNC LT4 heads/intake - Comp Cams solid roller - MoTeC M48 Pro engine management - 8 LS1 coils - 58mm TB - 74/HR injectors - 300-shot dry nitrous - TH400 - Gear Vendors 0. 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. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Find 1967 PONTIAC FIREBIRD Headers Round Cylinder Head Port Shape, Weld-on Collector Attachment and get Free Shipping on Orders Over 109 at Summit Racing Use your Summit Racing SpeedCard today, and get 15 back - Get Details. Dougs Headers 2' 4-Tube Full Length Round Port Headers Pontiac Firebird 400-455 70-74 Metallic Ceramic Coating (0) Reviews: Write first review. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Doug's PASSENGER CAR HEADERS Long Tube Metallic Ceramic CoatedHeader development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices.
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