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5.0 1991

  1. 1991 Idle issues

    5.0L Tech
    So, i'm new to this forum and I know that this question has probably been answered a million times but, what would be causing my 1991 5.0 to have surging idle (700-1250 Rpms) to the point where it dies or dies with the slightest touch of the pedal. The first i thought it might be was the IAC...
  2. 1991 Mustang No Crank no start, no power after the first starting attempt.

    5.0L Tech
    Howdy. rwavey.gif im oretty mew here and ive come ask for anyones help that can help me figure out what the issue is with my 91' 5.0. The problem started about 3 days ago. i Start my car the first thing in the morning and it too a little longer than usual to turn over, so i figured something...
  3. 5.0 engine kicks like a horse at throttle up.

    5.0L Talk
    Merry Christmas to all. I need some advice. I have a 91 Fox with a punched 5.0 to a 347. The upper manifold is an Edlebrock performer with a 75mm mass and a 75 mm TB. The injectors are 24lb. and a 255lph fuel pump supplies the gas. There's a chip in it as well but for now Im not remembering...
  4. 1.7 rockers+e cam+ tfs 170 heads PTV issues

    5.0L Tech
    Hi everyone. I recently finished my hci combo on my car. It has tfs 170's, crane 2040 cam (also e cam), and Holley systemax intake for the hci. Right now I'm using 1.6 rockers with no PTV issues. The car runs great. My question is do you guys think I can run 1.7 rockers without having to tear...
  5. 1991 foxbody help

    5.0L Tech
    ok soo i have a 1991 foxbody 5.0 lx already has mods (cams, heads, exhaust, intake and throttle body, also a/c delete) but idk what all the guy put on it i know its good work same mechanic i took my first mustang to. but im no car genius. what could i add to give it more hp? i was thinking...
  6. 91 harness 93 a9m

    5.0L Tech
    ok so i by no means know anything about mustangs but know about cars in general im doing a swap 240sx v8 i have a 91 block i believe F1SE? F is 90s 1 is the year made right guy said it was a 91 i got a free A9M ecm will i was told this is auto but should work insted of the A9L i read about...
  7. 1991 mustang gt trouble reving when full throttle

    5.0L Tech
    hi everyone. this is my first post. i recently bought a 1991 mustang gt thats been completely redone. its motor has been rebuilt and so has the transmission. the body and everything is in great shape. however i noticed this problem the other day. when i give the car full throttle it will not rev...
  8. dorections for removing a c4 from my 5.0?

    5.0L Tech
    i was wondering if anyone knows or knows where i can get directions or a walk through of removing a c4 transmission from a 91 5.0? any info would really help. thanx
  9. 1991 5.0L in 1995 Mustang GT

    5.0L Tech
    Hello, I was wondering if a 1991 5.0l 302 would work in a 1995 5.0l 302 car. I know the the intake and water pump are different but what else is not the same. I found a good deal on a 1991 5.0 long block but I am not sure if it is worth messing with putting it in my 1995. Thanks