Greetings, I know some of you helping me with getting my suburban running
Have a few issues you might be able to help
Truck runs good, nice and quiet, no noticeable smoke
All spark plugs white, except #2. Sooty but not wet
Truck lags some power, especially uphill
Cut off muffler to install smithys 26", found it already had a glass pack
Even with new smithys very quiet and not typical glass pack sound
I'm ready to adjust valves and trying to determine hydraulic vs solid lifters
Block-# 3769716
GM 21
Behind dist. FI226B
Head 3836949; hard to read, seams they brazed over the last two number
Last edited by Biglou; 06/14/2016 7:42 PM.
