Hey everyone! New to the forum but had many foxbodys in my time. All stock blocks and added variety of bolt-ons and am a mechanic by trade now for 15 years but I am at a loss with my latest project. 306 built with cam and trick flow twisted wedge aluminum heads, flat tappet hydraulic lifters and non HO firing order...bought block with heads installed but I added everything around it, intending for it to be a daily I made it fuel injected, Holley Systemax upper and lower, 75mm throttle body, stock distributor, painless engine wiring harness with what I think are correct signal wires swapped to accommodate non HO firing order,swapping 3 with 5 and 4 with 7... (car came bare with no wiring) A9L ECU and a T-5. Full exhaust with shorties and. New sensors (temp,O2,oil pressure,etc...) plugs,wires, cap, rotor, aeromotive fuel pump and adjustable regulator... Anyway....long story short is I fire it up and it runs but shakes like half the cylinders are missing. Reading temps on manifold with lazer temp gun after 20-30seconds I get 230-250° on #1 and #2, #3 doesnt climb close to that for a while and #4 is close to 300°, other bank #5 lingers low around 180-190 and #6,#7 shoot up above 300°quickly, #8 is averaging like #1 and #2 around 250....my main concern is serious misfiring, wojt rev above 2500rpm without breaking up and limiting any further revs, and it moves but no power (in and out of garage) and it idles rough but does idle, however if I stall it it floods, wont restart unless I take fuel pump relay out, clear it and restart it dry....number #3 seems like the biggest problem child so starting there I swapped injectors between #2 and #3,no difference (used,not new, 31lb injectors and MAF sensor purchased from unknown source on craigslist parting out car...😬
pulling plug wires makes no difference in idle quality, timing has been adjusted up and down from 8-15° and not the issue. Just think I'm missing the big picture here and any ideas please let me know! Old school bottom end with what I thought would be set it and forget it top end but not the case lol.
Thanks in advance for any pointers and any other aspects or testing done that is needed for ideas let me know! Already wrote a book but desperate obviously!