John Collins
Well-Known Member
I have ‘73 Dart Sport with an LA 360/904 that was built by someone 15 years ago and I don’t know anything about the specifics of the build, but here’s what I do know. It has a 360 block casting number 4006830-360-9, 3769974 head – 1975-1976 1.88/1.60 valves, Mancini Racing Adjustable Rocker Arm Set, 904 transmission, TTI headers, an Edlebrock Performer 318/360 intake manifold, a 9635 625 CFM Carter AFB competition series 4 barrel carb, MSD ignition and digital 6a ignition Blaster 2 coil and distributor, rebuilt 60A Alternator, a 26 inch radiator. Not installed, but already purchased... 8 3/4 rear with 489 case helical sure grip with 3.23 gears, ESPO 6 leaf springs with new shackles and bushings, Hotchkis front sway bar and a front end rebuild kit from Mancini.
What I’m mostly looking to do is clean up the engine, replace gaskets, check for any foulness and improve compression a bit if I can. I know there’s a long list of things I can replace while I’m at it, but there’s only 29k on the engine, so I’m hoping for good luck when I open it up. My first and only thought was too port the heads and possibly the intake manifold for a performance upgrade and possibly replace the Carburetor(looks as well for the carb). It was suggested that I buy cheaper Summit Heads though. I’d go that route if I can find a pair for cheap. I’m not looking for crazy horse power, but more is better. If I clean up and sell my current heads will it be similar in cost to buying “cheaper” heads after you factor in the machining costs? I’m uncertain as to what Cam I currently have as well. Thank in advance for any insight or suggestions!
What I’m mostly looking to do is clean up the engine, replace gaskets, check for any foulness and improve compression a bit if I can. I know there’s a long list of things I can replace while I’m at it, but there’s only 29k on the engine, so I’m hoping for good luck when I open it up. My first and only thought was too port the heads and possibly the intake manifold for a performance upgrade and possibly replace the Carburetor(looks as well for the carb). It was suggested that I buy cheaper Summit Heads though. I’d go that route if I can find a pair for cheap. I’m not looking for crazy horse power, but more is better. If I clean up and sell my current heads will it be similar in cost to buying “cheaper” heads after you factor in the machining costs? I’m uncertain as to what Cam I currently have as well. Thank in advance for any insight or suggestions!