FORCED INDUCTION Turbos | Superchargers | Intercoolers | H2O/Meth Injection

twin gt35 61/62 on 6.0, why is it better on 4.8?

Thread Tools
 
Search this Thread
 
Old 11-01-2016, 06:53 PM
  #21  
On The Tree
Thread Starter
iTrader: (1)
 
LS325ci's Avatar
 
Join Date: Nov 2013
Posts: 133
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by TrendSetter
i had those turbos on my 4.8. i think my thread on ls1tech is what got you thinking about this.
those turbines are really small and the housings are .68
with a small cam it probably wouldnt be too bad on a 6.0 but you definitely wont be able to spin it up or make a lot of boost. but the power would be there.
yea you and denmah got me reconsidering lol

but i think im just going to go with twin 70mm on3. .68
gt35 seems to be good but the once i found are below my goal hp.

saw this 700whp at 15psi is exactly what i want to around. its definitely an overshoot. but hopefully not too much lag.

Twin Turbo 1969 Camaro LQ4/T56 - LS1TECH
Old 11-02-2016, 11:08 AM
  #22  
Truck Sponsor
iTrader: (12)
 
TrickTurbo's Avatar
 
Join Date: Sep 2006
Location: Wichita Falls Tx.
Posts: 4,466
Received 62 Likes on 50 Posts
Default

Look into the 62-66mm on the compressor.
Q trim exhaust wheel
68 AR
Old 11-02-2016, 11:43 AM
  #23  
On The Tree
Thread Starter
iTrader: (1)
 
LS325ci's Avatar
 
Join Date: Nov 2013
Posts: 133
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by TrickTurbo
Look into the 62-66mm on the compressor.
Q trim exhaust wheel
68 AR
q trim are in the 69mm right?

I cant think of any low priced turbo that would have that spec.
unless you know of one thats in the 350 or less per turbo.
If my budget was a bit bigger then im sure ill find one that match what i need.
Old 11-02-2016, 06:41 PM
  #24  
TECH Apprentice
 
TrendSetter's Avatar
 
Join Date: Dec 2004
Location: Florida
Posts: 372
Likes: 0
Received 5 Likes on 5 Posts
Default

the t72s i just bought are 68mm .68 exhausts.
they should be here friday.
Old 11-02-2016, 07:03 PM
  #25  
Truck Sponsor
iTrader: (12)
 
TrickTurbo's Avatar
 
Join Date: Sep 2006
Location: Wichita Falls Tx.
Posts: 4,466
Received 62 Likes on 50 Posts
Default

Originally Posted by LS325ci
q trim are in the 69mm right?
Depends on who you ask.
I've always used a 68 as a Q trim.
66 is a P trim.
Old 11-02-2016, 07:06 PM
  #26  
TECH Junkie
iTrader: (9)
 
Gadgetized's Avatar
 
Join Date: Jan 2010
Location: Rochester, NY
Posts: 3,095
Likes: 0
Received 3 Likes on 3 Posts
Default

I'm doing a pair of 61mm turbos with .81AR on a 6.0 for next year. I plan on being able to push it pretty hard. We will see what happens.
Old 12-10-2016, 06:36 AM
  #27  
Mod with training wheels
iTrader: (16)
 
smokeshow's Avatar
 
Join Date: Feb 2009
Location: Detroit
Posts: 7,738
Received 202 Likes on 138 Posts
Default

Originally Posted by 1CAMWNDR
Hmmmm. True.....What else might cause a larger engine to make massive TQ earlier and make less peak HP and level off at 5K? Cam?
This conclusion is almost always drawn on a comparison of apples to oranges. Unless the only variable that changes is engine size, you can't very well say that the 6.0 is going to choke before a 4.8 in terms of horsepower. You're right, the cam is a huge player here. The biggest overlooked effect the cam has it its ability to allow exhaust up into the intake port and intake manifold during valve overlap. Seems weird to consider, but its pretty simple. If exhaust drive pressure is higher than boost pressure, then when both valves are open that exhaust is coming out of the intake valve. Then you've got a 'fresh' air charge that is hugely diluted with inert gas that doesn't contribute to making more power. That's why his truck choked out with the GT35s. Wasn't the fault of the turbos.

Originally Posted by 1FastBrick
Yes!!!

I am not sure if I bought Turbos and they came with the truck or if I bought a truck that came with the turbo's....

There was also a LQ4 in it as well.
I was actually pretty disappointed when you came to get it and you didn't know much about the turbos. I'm standing there thinking, "WTF Joe, that's the whole selling point!" Glad you found out how badass they are though
Old 12-11-2016, 10:53 AM
  #28  
Custm2500's Rude Friend
iTrader: (17)
 
1FastBrick's Avatar
 
Join Date: Apr 2007
Location: JunkYard
Posts: 14,324
Received 758 Likes on 627 Posts
Default

Originally Posted by smokeshow

I was actually pretty disappointed when you came to get it and you didn't know much about the turbos. I'm standing there thinking, "WTF Joe, that's the whole selling point!" Glad you found out how badass they are though
I know some about turbo's But not to the point that others do. Just enough to get myself into trouble. I usually have to look at a compressor map to see if it will work or not for a specific application.



All times are GMT -5. The time now is 02:56 AM.