Speed Density/Carb/SSP sectionThis section is for the Speed Density or Carb vehicles, as well as Special Service Package 'Stangs
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88 mustang 5.0 ho starts and idles fine but in in gear drives rough
'My 88 mustang starts right up no problem stays idle I can rev it up still no issue but on the road it it runs real rough especially from 4th to 5th gear and shakes another thing I have noticed is when I let it sit for a few weeks I take it out for a spin and it drives great. I took it to a shop and they said it's not my trans I already know that I had the whole thing rebuilt this past summer my dad says he thinks it's the fuel filter any suggestions? Also it feels underpowered in some areas but that isn't the case when I let it sit for long periods of time. Any help would be appreciated
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88 mustang gt convertible. 5.0 5-speed 100,000 miles on body. 30,000 miles on rebuild. Ported and polished heads, big cam, bbk headers,bbk 70 mm tb, bbk x-pipe exhaust with 2 flow master 40 series mufflers, 373 gears its been lowered a few inches stage 2 clutch,short throw shifter
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