Compatible with 1967-1974 Camaro, 1968-1974 Chevelle, 1968-1974 Nova, 1970-1974 Monte Carlo, 1971-1974 Passenger Vehicles, 1.50 in. Primary Tube, 2.50 in. Collector; Flowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 3/8 in. flanges with sealing rings for a leak-free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance.;.
These will fit your astro v8 , I have patriot angle plug heads, only mod is to dimple #1 tube to clear #3 spark plug, of course use shorty plugs, passenger rear bolt is a bear but other than that, perfect fit!!! I am very happy with them !!
The headers arrived in a beat-up box on time with the contents in perfect shape. I guess that's why these things are called scratch and dent headers. No issues except that the collectors are the 2.5 inch variety with a colletctor adapter that bolts to the collector which is the correct size of 2.25 inch. The headers are a really good design as compact as these manifolds appear. I can't wait to try them on for performance.
Just a few small bends at end of headers where collectors bolt on. Took a pair of players and pretty much bent it in the places bent. Excellent deal for the money. Would definitely by again.