364ci LS2 turbo sizing
364ci LS2 turbo sizing I am starting to gather parts for the turbo kit I'll be putting on. The entire combination hasn't been decided just yet but I believe I'll be using the stock LS2 shortblock thats currently in my car. It has ARP rod bolts and everything else in factory, it will most likely have 317s and a LS6 or similar cam. With the research that I've done so far I'm think of using a PT 76GTS turbo. The kit I have has a T4 flange which is what I'd like and is a front mount setup using truck manifolds. I have a good deal to learn here but I feel I'm on the right track, just looking for some good advice and hopefully personal experience from so of you with similar setups. This is a street driven car and this turbo seems to be a good balance between quick spooling and it doesn't seem to have nearly as much backpressure as some of the smaller 76mm housings.
Thoughts or opinions?
Thoughts or opinions?
I'm open to something like a PT88 but that turbo doesn't seem very efficient for its size and I don't want to get a BW or bullseye turbo for shear size and weight. not sure how hard it is to fit something of that size but I can stand the rad up if need be.
76gts is a great unit, can't beat it for its size and performance capabilities. I've seen these units push close to 900rwhp and have excellent spooling. I believe they can be upgraded to 78 and even 80mm compressors.
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staying auto?
problem with the 76 is it will be hard on pistons with pump gas, lots of boost/tq/cylinder pressure early, and unfortunately it will only show up as wheel spin and your ET's may actually suffer if on a street style radial
the 88 is heavier, slower, but has a much smoother and wider powerband for the larger cubes you have.
if 5.7 l it would be a hard decision.. 76mm with slightly relaxed exhaust wheel maybe for you
problem with the 76 is it will be hard on pistons with pump gas, lots of boost/tq/cylinder pressure early, and unfortunately it will only show up as wheel spin and your ET's may actually suffer if on a street style radial
the 88 is heavier, slower, but has a much smoother and wider powerband for the larger cubes you have.
if 5.7 l it would be a hard decision.. 76mm with slightly relaxed exhaust wheel maybe for you
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Yes it will always be an auto,most likely an 80E at the same time. I see what your saying about it spooling too fast. I intend on running a 28" radial and I know the street won't offer much traction. The 76 FI recommended come with a 1.23 A/R and that's what I'm leaning toward. Either that or an 80-88mm compressor wheel in the same turbo.
just collecting parts at the moment and tearing it down this winter. Lots of things changing and I'm not really set on what I want to do with the motor just yet, will probably be stock internal for cost purposes.
problem is the car isn't top priority, we just had our second daughter and are looking to move into a larger house soon so it may be a long term project.