EGT Temps: Check this out, need help!

[jrust]

I'll try to get as much info listed below but first the engine and related stuff. 3rd gen charger w/ 400 cu, doug's headers, Flowmaster muff. w/ x-pipe duals, .030 w/ KB 240 slugs,125-135 psi on compression all cylinders, hughes mild cam, hyd lifters, adjustable pushrods, heads most likely milled to raise compression, holley 750 dp, RPM intake, 4-hole 1/2" spacer, msd wires & dizzy w/ 6al, timing set @ 13-16 at idle full at 2850 rpm, medium springs. Now for the good stuff. This is all in degrees, Summit hand held infrared micro meter.

Cylinder #  1                3               5                 7               2                4                6                  8         
Idle        326       400 +/- 5%      492 =/- 5%   326           335             296            624               450                13" vacuum         measured with a infrared digital gun/meter from Summit
1500      355            780             440             345           360             305            606               490                18" vacuum
2000      375            880             600             370           419             400            738               610                20" vacuum   #6 & # 3 slight glow  # 5  dull glow
2250      435           ****            650             390           470             430            780               640                **** = meter checked out too hot,  5 still glowing. Rad temp. 166,

My question, what in the blazes is going on here? Also the engine seams to be missing in a slight manner just can't figure it out where it coming from. Checked firing by a timing light but still no glues.
Any help would greatly appreciated. Thanks, James

[Challenger340]

I can't help, been too long since I tried to read EGT's with a handheld. But looks "high" on a few holes.
I'm used to reading actual EGT's from probes in the primaries on an Engine Dyno.

How are you adjusting the exhaust valves ? Looks like you got a few dumping/burning raw fuel out the tubes ? That, or really late timing on just a few holes (unlikely).

How are you checking compression ? Ignition disabled, all plugs "out", throttle wired open, 4 bumps only per cyl. Look for the first bump to be 75% of the fourth and final bump ?
Usually indicates Valve hanging open due to Lifter pump up, too much preload ?

Bob out.

[jrust]

I guess its time to dive off into the valve train again. I bet the adjustable pushrods are at the base of this problem. Will post details as these stones are turned over.

[Challenger340]

Yep, I'd look Valvetrain.

Check Intake for Preload, when "it's" Exhaust is just opening.

Check Exhaust for Preload, when "it's" Intake is almost closed again at the end of it's cycle.