As far as cash just dropping the money for the engine up front sounds alot easier, but then i might as well rebuild that one. The main thing im going for is more power. either way im going to replace the cam and all seals (all parts that i could see failing or shortening engine life because of the turbo) of what ever engine i get. I'm def thinking of a top end swap from a 3X00 because the swap seems pretty cheap so far. (maybe around $100-250total) and they seem like they will benefit highly from the turbo (engine will breathe MUCH better).

Quote from: TurboGTU260 at the crank is good. At whees it so so reliablility with a untouched engine with such high mileage. Its an insurance and reliablility to freshen up a used, old engine.
If your lucky..and find a complate TGP turbo setup for cheap ..a 500 budget cap will do. BUt I highly doubt it. Your going to have to piece this seup up together for a while. Buy turbo..then wait for funds from work..thens buy pipes and get x-over made...wait...then funds again..then intercooler...wait..ect. This is how my brother and I get our cars together. If you had the money...you'd just get it done by next week.

YEa that's the method i would go, but i would at least want to build one part of the engine (internals) and then put the engine in the car. then the rest would be a day at a time never taking my car off the road for more then a day at a time. But i say i want to replace the crank and pistons anyway because i know i dont want to feel guilty for taking off running in the 4000s. Because i konw the extra power will be more torque on the crank. I want to over build to guarantee the dependabillity, but if you dont think it's important. I'd get a cam. Are the rockers, lifter and all that fine?
Just tryin to make sure to go the right route.

Quote from: mfewtrail

Quote from: BlackdOutLuminaSSseems about right but a turbo that big only looks like it'd be good for racing only. And the superchagers can do more then he's giving them credit for because just by adding a smaller pulley and machining out some of the internals of the SC, im sure,  can do alot.

It's not as simple as just adding a pulley and gaining massive power, you need supporting modifications.  The M90 is decent if you want to run 11's/12's(I'm aware that one has powered a 97 GTP to a 10.8 1/4 mile run, but that's w/ weight reductions and every other modification known to man), but after that, you really need a better supercharger/power adder.  Also, GTP's are doing those times with basically turbo kits/tuning/exhaust work(stock heads, cam, etc.) vs. the supercharged cars needing more stuff to do that.

How much mod did it take to get it that fast? Altho i wont be racing my car at all i would like it to be about low 14's (maybe high to mid 13's) just as an example of how fast i do want it to be.  How street drivable is that car?Thanx

well considering that i want to take advantage of the fact that i have an extra engine to take apart and do right. SO guess the little extra money will be worth it in the long run in the reliablillity department.  Im looking for around 260hp. with what i want so would the original 3.1 be able to provide me with these numbers and handle my reliabillity expectations by just putting in the 3.1T internal parts? Or would i have to completely rebuilt like im thinking i would?

That's exactly what i needed, but as far as reliabillity and total cost should i carry out with this project if i dont want to spend to much over $500?  Remember i already have the 3.1.

Just in general what do you think of what i am trying to do with my spare 3.1? Does it sound possible to rebuild the engine strong enough to withstand me running it daily and still remain reliable?

i have a spare 1991-1992 Lumina engine, that's mainly why i am asking about just what parts to get while i have it out and availble to take apart and put in the high performance internals.  Because im not looking for a pure track car or a car that'll just be sh!t out in like 15-30k miles.  I just want the most reilable engine i can build with great power and an engine that i can run with out feeling guilty.
Just let me know.
BTW the search option sucks what am i searching for? Conversion from basic 3.1? TGP swap or what?

seems about right but a turbo that big only looks like it'd be good for racing only. And the superchagers can do more then he's giving them credit for because just by adding a smaller pulley and machining out some of the internals of the SC, im sure,  can do alot.

:roll: im more then sure there are plenty of posts that can get rid of the basic questions that i have, but as far as advice and going with the best possible option and considering horsepower time and money, i would still like your option about the whole rebuilding idea based against just selling my extra 3.1 and getting a SC 3800 series II. Im just attempting to be different then just getting the norm. Because i know this engine is capable of alot more then GM released it with already just with the short time i have been researching this specific engine.
thanx i'll also look around while you post your opinion.
i'd appreciate all of your help. :wink:

Mainly i know that i could simply just get everything that's different from my stock 3.1. But i know there has to be more to it then just that. So am also looking for what i would need as far as computer and internal parts  wise. Because i want this to work right and i dont want to dramatically-- or at all really-- want to decrease the life of my engine.  So what parts can i upgrade in order to successfully increase or maintain engine life and make this conversion simple.
ThanX alot.