With the general public unaware that an ordering choice would get them the high-power street engine, only 157 Firebird hardtops were ordered, of which 55 were Trans Ams. What could have been a big seller akin to the first GTO turned into a performance rarity more in line with Chevy’s “Z-code” options. With the company focused on building up buzz for the Ram Air V, its quick removal prevented Pontiac from promoting their new king of performance, the Ram Air IV. When the production requirement was dropped, Pontiac halted the planned 250-unit run to cut warranty costs. Although it was a spectacular performer, the high-strung engine was too fragile for street use. The motor used a shaved 400 block fitted with a radical tunnel port intake to create a short-stroke, 303-cubic-inch engine that redlined at 8,000 RPM. Problem is, the only company that I have located that makes headers for these heads is Doug's Headers (part D568) and nobody (and I do mean NOBODY) has them in stock. The pinnacle of the Trans Am lineup was to be the new Ram Air V, developed to meet the Trans American Racing Series’ 5-liter, 305-cubic-inch engine homologation requirements. 7 Help - I need Pontiac Round Port Headers I am changing the heads on my 68 Firebird to the Edelbrock RPM aluminum heads, which are a copy of the Ram Air heads and have round ports. Unlike most contemporary performance engines, it managed to produce power without sacrificing reliability or low-end torque, making it perfect for street use while still being competitive on the track. Introduced in the middle of the 1968 model year, the engine was available in the GTO, Judge, Firebird and Trans Am through 1970. Classic Industries offers Pontiac Firebird Manifolds & Headers. Classic Industries offers a wide selection of Manifold for your Pontiac Firebird. When Hot Rod magazine tested a Ram Air IV-equipped Trans Am, it did the quarter mile in 14.1 seconds, breaking 100 miles per hour in the process. 1970-74 Firebird / Trans AM 400ci - 455Ci SD/HO Round Port Dougs Ceramic Coated Headers. 1967-69 Camaro, 1968-72 Nova 396-502Ci Big Block Doug's Ceramic Coated Headers. Flow was further improved with an aluminum intake manifold, which also shaved 15 pounds off the completed block, giving the engine power throughout the rev range. 520 inch lift with 308 degree by 320 degree duration, a huge jump from the III’s 288 degree by 302 degree duration. Round port heads improved flow while the engine’s unique cam profile provided. The factory rated the Ram Air IV at 345 horsepower, just 10 more hp than the Ram Air III, but a look at the spec sheet tells a different story. Engine on the 1969 Pontiac Firebird Ram Air IV However, circumstances related to Pontiac’s involvement in the series lead to the most powerful version, the Ram Air IV, being one of the rarest muscle cars ever produced. Pontiac Stainless Steel 1967-1969 Firebird (Also 1970-74 X-Body) D-Port Headers 326-455 1 3/4' Pipe 3' Collector Requires a 90 Degree Oil filter housing. In 1969, Pontiac produced 63,742 Firebirds. This engine was distinguished by its round-port, high-compression cylinder heads, and it was only available in the Trans Am for two years, with only 88 cars built. In 1969, Pontiac introduced the Trans Am, a race-bred version of the Firebird that used the “race on Sunday, sell on Monday” approach by competing in the Trans American Racing Series. From the factory, the V8 produced 335 bhp and 480 lb ft of torque in the cubic inch High Output model. removal/modification of locking Strg column reqd.1969 Pontiac Firebird Ram Air IV – Power and Performance.Doug's Headers D568-B 1 7/8" 4-Tube Full Length Header Pontiac Firebird 326-455 67-69 Hi-Temp Black Coating.Tubes are pre-polished to remove scratches and the header isfinished with a Hi-Temp Black Coating.reduces backpressure and increases higher RPM horsepower Precision formed long transition collectors and long tube design.3/8" Thick machined flanges.no warping.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. 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. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Doug's PASSENGER CAR HEADERS Long Tube Hi-Temp Black Coated Header 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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