I know Chis doesn't have this problem but those use the Explorer coil packs with have more problems with using the phenolic spacers, been there, done that. First problem is that the EGR tube is now too short. Second and third is that the coil pack mounting bracket mounts on both the upper and lower intake. You have to raise the one mounting arm to what ever the thickness of the spacer you use. Same goes for the throttle bracket, it mounts on both the upper and lower intake. Sucks, I know. It's one of them problems you try and solve and just dig the hole deeper.Grumpy wrote:another thing to consider with the taller covers is this ..... you cant go to high or they will hit the upper intake plenum on both sides and possibly the TB and hang the throttle open some .... so you will also need a phenolic spacer between the upper and lower intakes to give more clearance for the taller covers which will require longer upper to lower mounting bolts ..... at least 1/2 inch ...... its a give and take situation when swapping to roller rockers .... if you know someone in a GOOD reputable machine shop...... they can take one of the spacers and mill it down to what ever height you need ..... if they are 1 inch .. then you can get two 1/4 inch ones out of it like you need ........ just a thought
Dave