compression

  1. D

    Roller rockers with no compression

    I have a 1990 Mustang that I swapped a rebuilt 302 and t5 into, I got gt40p heads and upper and lower intake, got the heads rebuilt and bought some 6.250 length pushrods with some pro form sbf rockers, was cranking the engine over with a wrench to do a spark plug thumb test and the only cylinder...
  2. Aoneill5.0

    1989 GT Power

    Hello I purchased an 89 GT couple years ago it’s a Density Car. Worked out a bunch of electrical bugs with all yours helping. basically a daily driver and fairly reliable no real mods except Rear end clutch refresh with the extra shims for better hookup. no more 1 wheel peel!! anyway, My...
  3. E

    Replaced TPS, four dead cylinders

    Hey all--I have an 03/04 cobra swapped 99 GT with a twin turbo kit and an 01 cobra intake manifold (for reference). I recently had a CEL display for p0122, a TPS failure. I replaced the TPS, and ever since replacing it, the car has idled on only the rear four cylinders, not even on the same...
  4. C

    Downside Of High Compression Ratio

    Hello everyone. I came today with something odd. I own a 2003 v6 mustang (manual) and as i work on it something that shows constantly is the idea of tuning the car too a higher compression ratio to use high octane gas. This would give the car a little bit more of punch; however, there is always...
  5. W

    Twin Turbo Install Need Some Advice

    Hey guy so i have a complete twin turbo kit, still in the process of installing it right now. Just want to go over some things to get a complete rundown on everything that is going to be done. So currently the motor is rebuilt, all new bearing and forged interals in an 89 block. Gt40p heads...
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