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The recommended engine oils for the transfer case have an API rating of CD, CE, SF, or SG. These are detergent oils.

Are you trying to say that a 15W40 synthetic has a lower viscosity than a 15W40 conventional? http://www.valvoline.com/car-care/motor-oil-myths/

This notion is completely false.

This IS the case. Read TM9-2990-201-45 which outlines the LDS turbo part numbers and corresponding applications.

All of the LDS turbo model numbers start with a "4" (ie. 4" frame): LDS427-2= 4D-454C. LDS-465-1= 4-456. LDS465-1A= 4LE-354. LDS465-2= 4LE-456. The LDT turbo model numbers start with a "3" (presumably, 3" frame). 3LD-305, 3LJ-319 (whistler), 3LM-39 (D).

That is NOT an LDS427 turbo. It is an early "C" turbo.

The 3.5" U-shaped tube from the air filter to the turbo's inlet.

The intake tube from the M35A1 fits perfectly and is available from Memphis Equipment. Can't seem to post a pic, though.

In case anyone is curious about the sound of the different turbos... In order of increasing noise: 3LM-39 (aka D), 4LE-456 (LDS465-2), 4LE-354 (wastegate), and 3LJ-319 (aka C).

The 4LE-354 (wastegate) turbo achieved about 12 psi peak. I try not to run past ~1000°F and I don't take the rpm to the redline. The 4LE-456 didn't perform very well when used in this manner. The most boost I could get under the roughly the same conditions was ~8psi. Very little boost at...

Any luck finding a rod bolt?

With few exceptions, they are "alternators".

There is an idea floating around that the 6pt rod bolts are failure prone; can you check and see what you have?

You tested one and it was a stream?

I recall in other threads posts indicating that it is, in fact, a spray. I have not observed testing of one of these injectors in person; but I have a hard time believing that ~2kpsi through a tiny hole won't be a spray.

If you really want a quiet truck; why don't you install a full, rear exit exhaust?

The LDT465-1C, LDS-465-1, and LDS465-1A have the same timing: 20°BTDC so no change has to be made if you already have an LDT. The naturally aspirated LD series are 25° BTDC and the highest horsepower version, the LDS465-2 is 22° BTDC.

It is really hard to say if it is still important. The continental literature claimed it was done to "eliminate the requirement for high additive oil to prevent excesssive ring groove carbon formation." Has anyone had ring sticking with modern oils? The piston bowl is cooled on all engines.

Somebody once posted that heater kits were furnished with 195°F thermostats to improve heater performance. Is this true and has anybody used one?

Here is another, perhaps more succinct explanation: http://yarchive.net/car/engine_water_restrict.html Copied the text from that link: From: John De Armond Subject: Re: Cooling system fact or fiction Date: Thu, 23 Sep 1999 06:12:19 EDT Newsgroups: alt.autos.rod-n-custom,rec.autos.rod-n-custom...