Stock tb ok for turbo? Also choosing turbo size advice.
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So my main question is how well does a stock truck tb do with a turbo? I really don't want to spend the extra cash but will if it will make a significant difference. What size is the truck tb[lm7]?
Secondly im trying to decide between two turbo sizes. Both master power, either a t70 and t76. This is for a 5.3 with stock block and heads minus 02+ls6 cam and springs. I know exhaust ar plays a huge role, and my plan was .96. This will be a rear mount setup w/o intercooler spraying meth. Before you ask, i know intercoolers are cheap now, but i don't have room. I could make some crazy piping and put one, but the amount of bends will kill the flow, and it won't be hidden like im planning it![Devil](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_devil.gif)
Anyways what do you guys think, i ran this by the guys at work, and they say im crazy for putting a turbo on a hot rod[all older engineers and an indy race car guy] so im just going to hide it.
Secondly im trying to decide between two turbo sizes. Both master power, either a t70 and t76. This is for a 5.3 with stock block and heads minus 02+ls6 cam and springs. I know exhaust ar plays a huge role, and my plan was .96. This will be a rear mount setup w/o intercooler spraying meth. Before you ask, i know intercoolers are cheap now, but i don't have room. I could make some crazy piping and put one, but the amount of bends will kill the flow, and it won't be hidden like im planning it
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Anyways what do you guys think, i ran this by the guys at work, and they say im crazy for putting a turbo on a hot rod[all older engineers and an indy race car guy] so im just going to hide it.
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Ah yes i forgot to mention my power goals. My original goal was simply over 500rwhp, but 550 sounds nicer!
I originally planned the t76, but the spool time worried me. I will be wrapping the pipes, and im using cast oem c6 headers. Post headers i have a max of 4ft of pipe 2.5" before the merge at the t4 turbo flange. Although i may merge them prior to the flange into a single 2.5" to increase velocity a bit more.
Also what size cold pipe should i run?
I originally planned the t76, but the spool time worried me. I will be wrapping the pipes, and im using cast oem c6 headers. Post headers i have a max of 4ft of pipe 2.5" before the merge at the t4 turbo flange. Although i may merge them prior to the flange into a single 2.5" to increase velocity a bit more.
Also what size cold pipe should i run?
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I felt .68 was too small, but i also am learning about what works best in a rear mount. I don't want to choke myself with to small of hot side, and with cold pipe size.
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A .68 would be fine and will make it spool better on the street and in a rear mount. To give you an example, the truck in my sig weighs 5400lbs (4x4), has a 346ci LS1 motor and ran that 12.21@110 on 15psi of boost with a MP T70 turbo and a .68 a/r
That's about 530rwhp and this is at a track that is at 4800' elevation. That had the turbo pretty well maxed out,
You can always swap out to a .96 housing later and they're only about $125 new and a direct fit, but I think you will like the .68 better for street use.
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I definitely want it more street-able. I won't be tracking it much, if at all. What size IC piping where you using? Fitment wise i don't want to run more than 2.5 because i have to route it through my center X member like my exhaust.
I want to start gathering some parts now, so i can pull the trigger on the turbo as late in the year as possible so i get as much of the warranty before i store the car for the winter.
I want to start gathering some parts now, so i can pull the trigger on the turbo as late in the year as possible so i get as much of the warranty before i store the car for the winter.