Getting Ready for the Magnum Swap. (help?)
1971 Plymouth Scamp "I just want a cruiser"
2. Carburetor "Not sure what to buy on this one"
3. Oilpan "Not sure what is best/cost efficient on this as well.
4. Distributor "Not sure on this one either"
5. Headers "There are so many different opinions on this I'm lost"
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I'm at about the same step of the process for my 72 Dart.
For a carb, you can pretty much go with your choice of most any carb in the 650 - 750 CFM range. Most people have a preference for either Holley or Edelbrock, and will pick accordingly. If you are looking to save some $$$ (who isn't?), used is always an option, but you might be buying someone else's headaches or mistakes. One option is to buy a refurb factory direct from Holley, which sells them on eBay (for example:
Holley 0-83670 670CFM Factory Refurbished Aluminum Street Avenger 4bbl | eBay). Another option is buying from a reputable rebuilder like
EDELBROCK 750 CFM CARBURETORS - I've bought from both of these vendors for other projects and both times it worked out great.
For an oil pan, you just need an LA small block 360 mid-sump pan and pickup that fits your car. If you are using the Magnum timing cover, you can use the Magnum oil pan gasket with an LA pan. You can go with a junkyard pan or a cheap aftermarket pan, but a lot of people report fitment and sealing issues with the $50 - $60 cheapies, like the Summit house brand stuff. But they do work.
Distributor is super easy. Most any LA small block distributor will work. You can go with a junkyard, used, or re-manufactured unit, a Chinese knock-off, or spring for the big-name stuff.
For headers, you just need LA small block headers that fit your car. TTI and Doug's generally have the best reputation for fit, but you can make most anything work with sufficient determination.
