Turbo Size
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Turbo Size This is a tough question to ask i'm sure. But i'm doing a stock lq4 build with a turbo and not sure what size i should go with. I'm also going to build another lq4 while i'm racing the stock one this year. What size would be good for both??? I found a y2k turbonetics 91 for sale great deal just not sure if thats too big for a stock 6.0 any help would be appreciated
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I'd say a PT7675, but not sure if hitting 1000whp later is going to be an easy feat. Maybe a PT88 as it has the headroom for hitting 1000whp later, but the spool is a little later compared to the PT7675
yep. I'm running a TC76 (turbonetics 76mm) on my 6.0L and making ~700 and its not near its limit of airflow. We shall soon see, it will likely made 750 on the dyno in another 1k miles
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I was also looking at an S88 or a garrett gt35 86
The 76's seem very common maybe thats where i'll start. Picking a turbo is a nightmare and theres so many different ways i could go. Also found a Garrett GT47-88mm for 1300 seems like another deal........decisions...
The 76's seem very common maybe thats where i'll start. Picking a turbo is a nightmare and theres so many different ways i could go. Also found a Garrett GT47-88mm for 1300 seems like another deal........decisions...
Last edited by Camaro9969; Feb 3, 2012 at 03:14 PM.
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The smaller ones will be best for the stock bottom 6.0 for the lower hp goals but would be tougher to make the big numbers on the built motor. A 88 may be a good mix to handle both situations. Have to run some calcs on the maps to get an idea where performance may end up. Its not like you cant sell off a smaller turbo and upgrade down the road for little investment.
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The smaller ones will be best for the stock bottom 6.0 for the lower hp goals but would be tougher to make the big numbers on the built motor. A 88 may be a good mix to handle both situations. Have to run some calcs on the maps to get an idea where performance may end up. Its not like you cant sell off a smaller turbo and upgrade down the road for little investment.
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I vote for the 76mm. My PT76GTS (MPH vs. weight) calculated out to 850whp conservatively on a 370ci. I think the 76GTS is similar to the PT7675 ???
Its spool up is instant... be great for a stock engine.
Its spool up is instant... be great for a stock engine.
Go with a S480 or a S482. They make either in T4 or T6 housing. The T6 housing has a 96mm turbine wheel vs. the 75mm wheel of the Precision 76. It will run out of steam quicker on a 6.0, the precision that is.
The S480 and S482 can also be had in a T4 housing with 83mm 87mm or the new 92mm turbine wheel.
They are rated in between 1200-1350hp and are great quality units that can be had new for the price of a used Precision.
The S480 and S482 can also be had in a T4 housing with 83mm 87mm or the new 92mm turbine wheel.
They are rated in between 1200-1350hp and are great quality units that can be had new for the price of a used Precision.
yea its a borg warner S475-83 rated at 1010hp i am running one on my forged iron block build... no numbers yet.... I wouldn't mind getting a PT88 though
Last edited by MattSapp95_T/A; Feb 4, 2012 at 12:30 AM.
Don't even bother with the PT88. Get the upgraded 92mm turbine for your turbo or the T6 hotside and 96mm turbine. That will be enough for 100-150rwhp more.
Id go bigger than a 76. Like stated, bigger turbine for the cubes of the 6.0.
The 76GTS is the old designation. The new ones are available with a billet wheel and are called the 7675CEA etc. Rated at 1200hp instead of the regular 7675 at 1160.
The 76GTS is the old designation. The new ones are available with a billet wheel and are called the 7675CEA etc. Rated at 1200hp instead of the regular 7675 at 1160.