creese187

ok, my stainless steel-ceramic coated headers are glowing at idle, i have a 25 degrees of timing at idle, (due to the aggresive camshaft) and an A/F ration of 14:1, from a cold start it takes about 20 minutes or better for them to heat up and glow, i have a brand new engine, heres what it has listed below:
ANY SUGGESTIONS??
383 small block 4 bolt main, 1pc rear seal
brodix rr200 aluminum heads 2.055/1.60 valves
comp roller rocker 1.6
holley stealth ram intake
58mm throttle body
30 lb. hr injectors
eagle forged crank/rods/pistons
10.0:1 compression
slp shorty stainless headers
holley commander 950 fuel injection software
comp roller cam:.584I/.579E-duration @ .050=242I/248E

Apeiron

How are you measuring AFR?

creese187

my commander 950 uses a laptop for tuning, and i see/adjust all the paremeters with the computer

Apeiron

How is it measuring AFR then?

creese187

with a wide band o2 sensor located in the drivers side collector, this fuel managment system is made exclusively by holley

Apeiron

Try locking the timing out at about 34 degrees.

creese187

ive tried that too, i played with it from 25 all the way up to 45 before tdc at idle

sgreen3

iTrader: (4)

Make sure that your timing set is ok and put in the correct position.

tony_cogliandro

iTrader: (3)

new engines run very hot. i dont know if your heades are new but you should not run newly coated headers with a new engine.
they usually recommend breaking in the engine with old exhaust systems - to make sure not to overheat them.
once the engine is broken in, then put the ceramic headers on.
i dont know why but that is the way it is.

SDCamaro1904

ive heard clogged catalytic converters make your headers/exhaust manifolds turn glowing red.... dunno if this is your case...

Fyrstorm

iTrader: (1)

I agree, happened on my Cherokee and made the carpet matting smolder and eventually the floor that was overheated turned into a nice big rusty hole. Even dried out the gravel where I pulled over to see what the heck was happening!