Your injectors are probably junk, to that motor anyways. They are measure in Lb's, not by their resistance etc.
Your camshaft is positively junk for a stockish P38.
Your numbers are quite a bit higher than the level 2 performance cams I use.
They are the following specs.
INT/EXH - Dur @ .050” Lift: 196°/202° RR: 1.6/1.6 Gross Lift: .430”/.446” LSA 112°
Multiply your cams lift at .050" by 1.6, and see the difference. Too much lift, too much duration, and that in turn screwed the LSA. I think someone mentioned that days or weeks ago......Now who was that guy.....
As an example, jsut your gross exhaust lift at .050" is .4608", and your intake, and duration are equally screwed.
This isnt even considering your pushrod length is probably to crap too, or that you no doubt didnt measure the valve to piston clearances, work out your CR, and so on.
There are parts that work, and parts that need work. I think you figured out which one you have there.
Your insults to the guys that posted here wont get you much help. I know myself and Gilbert have more than enough experience to diagnose your problem. So the vailed insults need an apology in short order IMHO. I can promise you that we know what works in a P38 a whole lot more than that "reputable" engine builder that stuck that cam to you.
There are two ways for you to go, after sincere apologies get handed out freely.....
One is retarded, the other makes sense, as is the case in life.
Retarded:
Send your ECM to England for a custom tune.
Measure for valve clearance, CR and pushrod length. Get the pushrods custom made, although solid lifters and TVR rocker assemblies with tappets would make more sense at that point.
Dump the rigged up injectors and try to save the fuel rail. Install the Ford Motorsport injectors that I have used in the past. Search for part numbers.
Put it on a dyno, along with installing a wide band o2 sensor to keep a close eye on the AFR. 13.4-14:1 is ideal for a naturally aspirated small V8 like this one.
The sensible solution:
Dump the camshaft and install the kit I told you to a year ago.
Install the injectors that I do.
Break the camshaft in.
Go drive the thing and enjoy a smooth idle and great SUV performance.
I have another motor in my shop now, that someone tried to save money on. Didn't end up too well with 5 bent pushrods, chipped pistons, and so on. He will have about two THOUSAND dollars more into it, than he would have if I had rebuilt it to begin with. Some just aren't cut out to do certain things in life........
Your call, but everyone but you knows that the cam kit is 90% of your problem, with at least 10% being the junk injectors you rigged up. There are no quick fixes for this one. You made a bad call, now it's time to pay the piper so to speak. After sincere apologies all round of course.....
Martin