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Old 07-20-2005   #1 (permalink)
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Default Decided to go with twin turbos...few questions...

Ok Ive decided, after much thought, that 2 small turbos are the way to go. This way they will spool at very low RPMs and still give the hp of one big turbo. Here are a few of my questions:

1) Will my tranny hold up to that 400 hp or so?? I figure it wont with hard launches and what not, but what about just street driving?

2) Do I need a new fuel pump or will the stocker still be good at 400 hp? I know I will need new injectors (24# at least)

3) How much boost can I run (estimate) before I run into problems and need to do new pistons and whatnot.

4) Should I go MAF first? I plan to run the stock cam if I can get away with it for a while.

5) I will need to relocate my battery right? Just curious

6) Is there anything else I am forgetting? The rear should be fine right? If you think of anything, please let me know. I am just trying to get a scope on everything I will need to buy. I have just begun to look into turbos and brands and stuff. Any ideas?

Thanks, Galen
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Old 07-20-2005   #2 (permalink)
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Default

1( yes)
2 (yes) 255lpg pump, minimum..........if you go with 24# injector's, you will need an fmu.....myself, i would go with 42's...a kirban fuel pressure regulator and a gauge...
3 (8 to 10#'s)..........will run sweet
4 (i would go with a maf first.......just my .02) let the computer do it's job....hehehe
5 (yes) right rear in your hatch.........don't buy the cheap kit from summit either, spend the money the first time and purchase the taylor kit......

You are on the right path man..........if you have any question's at all, feel free to pm me and i will get you your answer...........


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Old 07-20-2005   #3 (permalink)
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Some kits require the removal of the smog pump, A.C., and or P.S. The stock cam will be fine. Maf first, get any potential electrical issues out of the way before tackling the boost issue. Bigger fuel pump is a must. A tuner of some kind is highly recommended. 36-42# injectors should be fine. PSI depends on what you think your block can hold. Are you a lucky person? If so, run 15#, if not, run 10#. I doubt your tranny will hold for long.
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Old 07-21-2005   #4 (permalink)
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I know that with a stock short block, people seem to favor the exhaust side of the cycle. I have seen that many if them go with much bigger exhaust valves (after a valve job obviously) to the point where the exhaust valves are actually .005" or so bigger than the intake valve. Then they go with some pretty big headers (like 1 3/4") and some normal piping back. My question is, is this all necessary to to make sure that you get all of that pressurized air out? Basically i want to know if I will also need to get a valve job and whatnot on my heads, or if theyll be okay. This is obviously going to depend on how much boost, but Id like to run 8 or 10#'s...Pretty conservative anyway right? Thanks
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Old 07-25-2005   #5 (permalink)
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Ok, well I have been flipping back and forth between one large and two small turbos. I think I may go with one big one for the sake of keeping my AC, and for ease of installation. I am new to different types of turbos though, what types of turbos are popular and which work well. I know a little tiny bit about the t1-t4 turbos, but it seems that size is the only difference. What else is there? Are these just classifications that most turbos fall into based on the max PSI they can produce?

On a side note, I have been reading several turbo 5.0 related articles and such, and have realized that the t-5 can actually handle a pretty decent load. I may rebuild mine with new internals so it will handle more torque like the later 91-up t-5's, and just run lower boost. In some magazine I saw a guy was still using a stock t-5 and had 511 hp and something like 650 lb/ft of torque. I cant believe that. I figure I will just keep the PSI down until I can afford a good clutch and t56 or TKO (with a real low 5th gear). I can also use the VRI lab at my school here to make some of my parts I may need. I figure I can save some money there.
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