Hey everyone, new to the group here so bare with me.
I’m currently working on my project 1988 foxbody mustang gt that here lately has been giving my tons of fits after swapping my heads and cam.
The mustang is a 5.0L stock bore 302ci EFI ( speed density ) car with a AOD transmission. In the last few weeks I have swapped out my old e7 heads and stock cam for some gt40p heads with stock rocker arms and some port work and a Ford Racing E303 cam. The car also has a gt40p upper an lower intake with a engine works 70mm throttle body (I believe) running stock 19LB fuel injectors and a racetronix 255 LPH fuel pump (installed about a year ago) also has BBK under drive pullys, shorty headers, CAI blah blah blah. Anyways, the problem I am currently dealing with after the swap is I can’t get the car to run very good at all. It will barley idle and at times it will die or it will backfire out of the exhaust badly. The car is also running very rich and if near it to long while idling it will make your eyes water. I have fully set timing on the harmonic balancer and distributor countless times setting the balancer at 0 degrees making sure I’m on the compression stroke of cylinder #1 an TDC of cylinder #1 and setting the distributor at 0 degrees with the rotor facing #1 plug on the cap. I made sure my cam/timing gear marks were all lined up before installing and torque everything from that point up to spec. A list of things I’m thinking could be causing my issues are possible vacuum leaks, fuel related issues (have not checked fuel pressure yet) or maybe even my stock computer has gone bad? Am I thinking in the right direction here? This thing has had me really frustrated the last couple weeks an all I’m trying to get to is that test drive!! If anyone has had similar issues after swapping heads and cam any advice is greatly appreciated!!
I’m currently working on my project 1988 foxbody mustang gt that here lately has been giving my tons of fits after swapping my heads and cam.
The mustang is a 5.0L stock bore 302ci EFI ( speed density ) car with a AOD transmission. In the last few weeks I have swapped out my old e7 heads and stock cam for some gt40p heads with stock rocker arms and some port work and a Ford Racing E303 cam. The car also has a gt40p upper an lower intake with a engine works 70mm throttle body (I believe) running stock 19LB fuel injectors and a racetronix 255 LPH fuel pump (installed about a year ago) also has BBK under drive pullys, shorty headers, CAI blah blah blah. Anyways, the problem I am currently dealing with after the swap is I can’t get the car to run very good at all. It will barley idle and at times it will die or it will backfire out of the exhaust badly. The car is also running very rich and if near it to long while idling it will make your eyes water. I have fully set timing on the harmonic balancer and distributor countless times setting the balancer at 0 degrees making sure I’m on the compression stroke of cylinder #1 an TDC of cylinder #1 and setting the distributor at 0 degrees with the rotor facing #1 plug on the cap. I made sure my cam/timing gear marks were all lined up before installing and torque everything from that point up to spec. A list of things I’m thinking could be causing my issues are possible vacuum leaks, fuel related issues (have not checked fuel pressure yet) or maybe even my stock computer has gone bad? Am I thinking in the right direction here? This thing has had me really frustrated the last couple weeks an all I’m trying to get to is that test drive!! If anyone has had similar issues after swapping heads and cam any advice is greatly appreciated!!