What kind of manifolds do I need for a Pontiac?

Aluminum 421 SD manifolds from original pontiac tooling. Hi heat alloy aluminum. Ceramic coating recommended. Two versions available A-all D-port heads; B for 63 SD “980” head only. Miniature starter or upside down starter is required.

How much does a ram air D-port manifold cost?

Pair LH and RH Ram Air D-port manifolds (shown with gray ceramic coating) GET TUBE HEADER PERFORMANCE & EFFICIENCY WITHOUT ALL OF THE TUBE HEADER HASSLE AND GROUND CLEARANCE PROBS: BOLT IN FIT FOR: 68-72 Tempest/GTO/LM 70-81 Firebird/ Trans Am (exc 301) Individual sides rh or lh are 299.00 each.

What are the casting numbers on Pontiac exhaust manifolds?

Manifolds are 455SD design (the largest Round Port design). Original casting numbers on Manifolds: LH 490803, RH 490802 Exact Reproductions from GM blueprints. RAIV pns now available by request! GET $25.00 OFF WHEN YOU ORDER OUR X-CROSSOVER EXHAUST SYSTEM WITH OUR FACTORY HEADERS!

How tall is an air filter spacer in inches?

Select your preferred location and we’ll note which parts are ready to be picked up TODAY. Sold individually. (44) Sold as a kit. (2) Select your preferred location and we’ll note which parts are ready to be picked up TODAY. Air Filter Spacer, 2 in. Height, Aluminum, Natural, 5 1/8 in. Carb Neck Diameter, Each

How big is the exhaust manifold on a Pontiac Firebird?

Shorty headers fit and perform similarly to Pontiac’s Ram Air exhaust manifold. Hedman offers a D-port version in its Hedder line for GTO and Firebird models that features 1.625–inch-diameter tubing that steps to 1.75 inches to improve low-RPM torque, and 2.5- and 3- inch collectors.

What kind of air manifold does a GM a body use?

Fits 68-72 GM a-body with d-port heads. Also fits 70 1/2 – 81 f-body. ***For those using cylinder without end bolt holes (i.e. #7K3, 7M5, etc) we have a fix that doesn’t require brackets or addl machining on heads. There is a 40.00 shop fee for this mod to the factory headers.

What kind of manifolds do I need for a Pontiac?