Forced Induction Superchargers | Turbochargers | Intercoolers

twin gt45's to small for 408?

Thread Tools
 
Search this Thread
 
Old 02-16-2013, 08:12 PM
  #1  
10 Second Club
Thread Starter
iTrader: (13)
 
Rickys S/C Z28's Avatar
 
Join Date: Feb 2006
Location: MOREHEAD KY
Posts: 3,297
Likes: 0
Received 0 Likes on 0 Posts

Default twin gt45's to small for 408?

hey guys i was wondering if twin gt45's would be a nice combo with a 9:5:1 408? ported 317s and a 4l80? i have the 67mm ones(not sure if there is another size) there T3/4 housings and i think the ar is .81
Old 02-16-2013, 08:36 PM
  #2  
TECH Addict
iTrader: (12)
 
LS1NOVA's Avatar
 
Join Date: Nov 2002
Location: Minneapolis,MN
Posts: 2,269
Likes: 0
Received 12 Likes on 12 Posts

Default

The common GT45 size is 69mm compressor, 77mm turbine with a 1.05 AR. What's the turbine wheel and is it T3 or T4?
Old 02-17-2013, 07:04 AM
  #3  
10 Second Club
Thread Starter
iTrader: (13)
 
Rickys S/C Z28's Avatar
 
Join Date: Feb 2006
Location: MOREHEAD KY
Posts: 3,297
Likes: 0
Received 0 Likes on 0 Posts

Default

I'll have to check the wheel size. Also I'm not sure if its a T3or4 how do you tell ? I have only had T6 stuff before lol
Old 02-18-2013, 02:16 AM
  #4  
TECH Resident
 
ayousef's Avatar
 
Join Date: Aug 2008
Location: Dubai
Posts: 910
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by Rickys S/C Z28
I'll have to check the wheel size. Also I'm not sure if its a T3or4 how do you tell ? I have only had T6 stuff before lol
are you worried about the compressor side not being enough for your final goals or the turbine side being too small and choke off the motor?

GT45's arent small turbos, infact theyre huge youll find alot of 1000+ rwhp twin turbo GT35r 427s around... Ive seen some 1000bhp single turbo GT45 imports too
Old 02-18-2013, 02:16 AM
  #5  
TECH Resident
 
ayousef's Avatar
 
Join Date: Aug 2008
Location: Dubai
Posts: 910
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by LS1NOVA
The common GT45 size is 69mm compressor, 77mm turbine with a 1.05 AR. What's the turbine wheel and is it T3 or T4?
what? GT45 is more like 80+ mm...
Old 02-18-2013, 09:01 AM
  #6  
Tenured Member
iTrader: (4)
 
SMOKY's Avatar
 
Join Date: Oct 2004
Location: Chicago, IL
Posts: 156
Likes: 0
Received 0 Likes on 0 Posts

Default

i believe they both mean y2004k gt45 turbos. Which generally are good for around 700 hp per turbo. I think it would be a little slow for spooling but would be a beast up top.
Old 02-18-2013, 10:06 AM
  #7  
Launching!
 
dirty_old_chevy's Avatar
 
Join Date: Jun 2010
Location: Alberta, Canada
Posts: 254
Likes: 0
Received 0 Likes on 0 Posts
Default

Originally Posted by SMOKY
i believe they both mean y2004k gt45 turbos. Which generally are good for around 700 hp per turbo. I think it would be a little slow for spooling but would be a beast up top.
I think liljohn or Martin could fix that spooling thing.
Old 02-18-2013, 06:03 PM
  #8  
TECH Apprentice
 
91sonomast's Avatar
 
Join Date: Nov 2011
Location: Murray, KY
Posts: 337
Likes: 0
Received 1 Like on 1 Post
Default

That is a REALLY big turbo for twins. I don't know if you'd ever get them spooled properly.
Old 02-21-2013, 03:24 PM
  #9  
TECH Enthusiast
iTrader: (16)
 
Danny's Avatar
 
Join Date: Aug 2002
Location: CA
Posts: 571
Likes: 0
Received 2 Likes on 2 Posts

Default

The exhaust side of the turbo is pretty big. Maybe a QSV will help things out.
Old 02-21-2013, 11:57 PM
  #10  
TECH Fanatic
iTrader: (6)
 
BLWN1's Avatar
 
Join Date: Aug 2002
Posts: 1,874
Received 12 Likes on 12 Posts

Default

This guy needs twin 101s!!!! pro mod ftw!!!!



Quick Reply: twin gt45's to small for 408?



All times are GMT -5. The time now is 06:27 AM.