Thanks for the replies! Now I have a few more questions...
(1) Is there is noticeable increase in power from the 3.1 to the 3.4?
(2) I have been reading that the 3.4 (from GM) is legal in 49 states (excluding California). Now, since I am in California, that poses a smog check problem/issue, I think... Does anyone know why that is (not smog legal in CA)? I have not been able to find anything on the web telling me why... Also, Nick, your post says you have a 3.4 (supercharged!!), do you have any measurements from a smog test with your 3.4 and if so, what were they (just wanted to see if they would be within CA smog limits).
(3) Also, you said you did not think the 2.8 could be bored to 3.4. I found this link to a place that would sell me (I have not called about a price yet) - a 3.4 short block (and I could use everything else from my 2.8 - I am assuming they must have to put in a thicker sleeve or do they just bore it out to the max and after the engine gets tired you toss it?? Just curious..). Here is the link to the site...
Have you heard of this place and do you know anything about it or how much it would cost? Also, when they ask for a good core, I am assuming a 2.8 core, correct? I will try and give them a call later today or tomorrow...
(4) If I go from a 2.8 to a 3.1 or 3.4, will I still be able to use the carb from the 2.8? (I understand it could probably take a larger one, but would the stock one be adequate?)
I will probably have (a lot) more questions after I call this guy (above) and make a visit to my local wrecking yard. Thanks for all your help!
<font color=blue> DesertToy </font color=blue>
1986 Xtra Cab 4x4 SR5 22R-TE, 31 BFG