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Tech Question
Fred, Gloucester Pt, VA, 1978, Dodge Aspen, 318
I have a 78 Aspen that I am currently thinking of beefing it up with a 70 383 Magnum from a Road Runner. Are there any other modifications other than using motor mounts from Schumacher Creative Services? Any help in making this easier would be appreciated. Thanks, Fred
Yes. A bunch. While this isn't a difficult swap, certainly far easier than a big-block into an A-body, it's far from a 2-hour bolt-in. Before getting into the details, let me make two observations:
> A 360 is a FAR easier swap and gives up only 23 cubes while weighing much less than the 383. Can you say: "Crate engine?"
> A 440 is only slightly more difficult to swap in, and gains 57 cubes over the 383.
But, okay, you asked about a 383. Here's the short list of what's gotta change, not including the mounts, which you have covered:
> Transmission (if automatic) or bellhousing (if 4-speed). Also, the bellhousing and/or transmission's input bearing retainer will need major rewroking to accept the Aspen's overdrive A-833 4-speed.
> Radiator / hoses (One from a big-block C-body will do the trick)
> Exhaust (everything from headers back.) Pretty easy - lots of room in an F-body.
> Rear axle. If you now have an 8.25" axle (unlikely), it will live for a while if you use street tires. A 7.25" will fail almost instantly. Eventually, you'll want an 8.75 or 9.25".
> Some wiring changes (mostly minor) assuming you have already trashed the Lean-Burn system
> Throttle cable (get one from a 318-4Bbl Dippy cop car)
Your letter really gave me no insight into your skills and resources, but the way you phrased it kinda leads me to think you might be fairly new at this. If so, be sure to do your homework - read, plan, read, plan, etc. And don't expect to get it done in one weekend. There's always minor unforseen hangups in a non-OEM swap like this. (Don't ask how I know this...)
Rick
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