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  1. S

    Anybody use the year one hp exhaust manifolds ?

    Considering these to swap a 383 into my 69 valiant. Are they better or worse than the originals ? I am open for suggestions on why I should or shouldn’t use these. Motor will probably be 400 horsepower. I’m not buying tti headers. Thanks
  3. S

    499 performance center thoughts ?

    I’m interested in this engine for sale, I would like to hear peoples opinions and thoughts. Has anybody had any experience with performance center in Dayton Ohio ? hopefully my pictures uploaded , I haven’t done that in a while. Thanks
  4. S

    383 horsepower

    what kind of horsepower and drivability can i expect with this combo . 383 . TRW 040 over L2315 pistons , 452 heads , Edelbrock performer rpm Intake . Holley 650 double pumper lunati voodoo 10230704LK. Duration @ .050 (Int/Exh): 234/242 Gross Valve Lift (Int/Exh): .513/.533...
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