SmallBlock engine swap on a Mopar A-body with headers.... Never Again!

rumblefish360 said

Well, according to the Engine Masters video, smash the header tube and dyno test video, nothing.....

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I'd like to see something specific like a 410 sb that turns 6800 or so , real heads,with 1 5/8 deemed to be generally "too small" headers...then smash on those and tell me how the upper rpm range is effected.