Classic Mustangs (Tech)Technical discussions about the Mustangs of yester-year.
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I picked up a 71 Grande last week. The guy I got it from knew very little about it; most of the work on the car had been done by the previous owner. I was under the impression that the 302 motor was essentially stock except for some chrome valve covers and a carb upgrade (Edelbrock 1406 on a Performer 289 intake manifold). However, while chasing down an ignition problem (bad coil) I was surprised to find it had a firing order for a 351. I ran the part number on the distributor and confirmed that it was for a 351W. The block is definitely a 302.
I'm a bit of a noob, so I'm looking for some suggestions as to what might have been done here. Is it common to drop in the crank & cam for a 351 into a 302? Is this possibly part of a stroker mod? I'm looking for suggestions as to figure out what might have been done without having to tear it down.
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The late model 302's used the 351 winsor firing order. It looks like someone put a late model cam in your motor. None of the internals have to be changed to run the newer cam, just the cam and I assume new lifters.
Thanks for the suggestions. I'm replacing plugs in a couple of days so I'll measure the stroke to see if there's anything interesting there. The engine is clean and dry so I'm just hesitant to open it up since it won't achieve anything other than satisfy my curiosity. The only change I'm looking to do short term is to replace the distributor with something without points, e.g. Duraspark II. Since the firing sequence is different it kind of threw a wrench into that plan until I better understand what I'm working with. Thanks again-
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