I would like this thread to be a good, solid, clean database for any 88-91 LN3 owner to get some more spunk out of their car and know all they should know so that no mistakes are made.
Please add any ideas that you know are available and fully compatible with these engines. Please keep your post neat, to the point and with minimal chit chat.
Before performing any mods. Do be sure that the vehicle has been fully tuned up.
Recommended tune up list:
Spark Plugs (NGK TR55/Delco/Autolite)
Spark Wires (Belden/Autolite Pro/Delco Spark Wires)
Air filter (K&N (Covered Below))
PCV Valve (Purolator, etc)
Oil Change (Mobil 1/Pennzoil Platinum and Purolator PureONE or Delco filter)
Clean MAF sensor (clean with rubbing alcohol and qtip very gently)
Run SeaFoam through engine.
Please add any items if necessary.
Specifically looking for information on the following:
(Who, when, where, how, pricing and capability)
THM440T4 Performance Rebuild/Buildup
Cross compatible parts/upgrades between engine generations
(such as coil swap already mentioned, what part on a newer 3800 is fully compatible with and can help performance/longevity of the LN3)
Any and all information/links to L67 swap information
I will continue to add to this list as information becomes available.