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I own a 1974 GTX Roadrunner one of 286 made that year.Mine is B5 blue with white strips and a white interior. I have done most of the work myself. I am the second owner and have owned it since 1978. The car is a driver with the road scars that go with it.:):):)
Does any-one have a simple adjustment proceedure for the secondary spring? My engine is a 440 it has been rebuilt. I am running the stock purple cam ported stock heads that have port matched.
I set the spring using the setting in the rebuild kit. The engine pulls strong to 4500 RPM then...