Alrighty, well I've got some questions concerning the way my transmission acts, the story told by the engine's reaction to it.

Keep in mind, I have a MP 2200 stall converter (it flashes to 2k, so I assume it is rated slightly higher due to V8 vs. SL6).

This all stemmed from the fact that my alternator is weak, and needs to be rebuilt.

Factory spec for idle speed on my car (California Emissions - 1971) says that idle speed IN GEAR should be 750 RPM. If I set my car (setting curb idle screw to achieve this) to run @ 750 RPM in gear, it jumps to around 1250-1300 RPM while in N or P. This doesn't seem normal. I am not all that familiar with the A904, but this just seems wierd.

If I lower the engine RPM in P or N to 1000 RPM, where it sounds "au natural", I drop it in gear, and w/lights off, it idles around 550, and with the lights on, it drops to about 450.

If the RPMS are any lower than 1000 RPM, the alternator basically quits "putting out" and my ALTERNATOR gauge goes heavily into the "D" or Disharge. Even slowing to go around corners, the alternator gauge dips heavily. I have been in my fair share of other A-bodies, with much heavier mods done to the engine and trans, and they do not have this problem.

This alternator issue is what sparked my interest in finding the factory spec, so that my stereo doesnt shut off when I come to a stop light. Also, with the blinkers on, pretty much all of my lights dim a bit when they lights activate, I attribute this to the weak alternator.

Then I discovered the funkyness of the engine/trans.


Can anyone help?

~THOR~

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1984 D100 Shorty Custom
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Part of Tyrde-Browne Racing