Incon tt Stage 1turbos HC408 or LC364
08-13-2007, 08:20 PM
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Incon tt Stage 1turbos HC408 or LC364 Hey guys,Im getting ready to get my engine built,Heres my delema Ive got an incon tt stage1 set up.I already purchased an Lq9 block,Beings im already in $3500 for the incon setup i dont want to drop $3500 more on bigger turbos !Should I build a low commpresion 364 9.5 to1 and max the turbos out, im guessing15psi,or so.OR do I build a 10 to 1 408 and run 6 to 8 psi or even possible 10 psi if possible, I just dont really know? what these stage 1s are capable of feeding. any input will help guys and this will be in a35th LE SS#1989 , driven mostly street somtimes flash lightsAnd weekendsThanks BARNAT
08-14-2007, 11:06 AM
#3
I'm getting ready to send my turbos off to get upgraded to the bigger ones, and I was expecting to spend only around $1,900.00 for the full upgrade to include shipping. Not sure where you got the $3,500 number from. Do a search for incon threads and you'll get some pretty good info on what the turbos have done on a stock cubed engine and a 408 with both the smaller turbos and the bigger turbos. I'm sure cablebandit will chime in here though as he's got tons of experience from the incon setup.
08-15-2007, 01:23 PM
#4
Small cubes....the stock cubes will spool the small incon turbos almost instantly. bigger turbos will have a little lag but make more power. either are choking a big cube motor. Best incon combo would prolly be 346-370 cubes with bigger incons and a better i/c.
08-15-2007, 02:03 PM
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They spool pretty damn quick in my 370ci setup, haven't even dynoed it in almost 2 years, on an SD tune now and larger actuators. Even then I hit 600rwtq @ 3500rpm 
Even had 440rwtq @ 2500rpm
This was a 15psi spike settling down to 11 ( think I'm out of turbo ). Also very conservative timing, A/F around 10.5:1, CR of 8.7:1, stock polished/UNported 317 truck heads, and 91 octane.
Who here has an Incon setup where they managed to not lose boost on the top end? I replaced my actuators ( 4.5psi to 8psi ) and boost comes on faster, but it is still dropping boost, down to about 11 @ redline, hitting almost 15psi everywhere else.
Even had 440rwtq @ 2500rpmThis was a 15psi spike settling down to 11 ( think I'm out of turbo ). Also very conservative timing, A/F around 10.5:1, CR of 8.7:1, stock polished/UNported 317 truck heads, and 91 octane.
Who here has an Incon setup where they managed to not lose boost on the top end? I replaced my actuators ( 4.5psi to 8psi ) and boost comes on faster, but it is still dropping boost, down to about 11 @ redline, hitting almost 15psi everywhere else.
08-15-2007, 02:56 PM
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Originally Posted by ChevyNo1
They spool pretty damn quick in my 370ci setup, haven't even dynoed it in almost 2 years, on an SD tune now and larger actuators. Even then I hit 600rwtq @ 3500rpm Even had 440rwtq @ 2500rpm
This was a 15psi spike settling down to 11 ( think I'm out of turbo ). Also very conservative timing, A/F around 10.5:1, CR of 8.7:1, stock polished/UNported 317 truck heads, and 91 octane.
Who here has an Incon setup where they managed to not lose boost on the top end? I replaced my actuators ( 4.5psi to 8psi ) and boost comes on faster, but it is still dropping boost, down to about 11 @ redline, hitting almost 15psi everywhere else.
Even had 440rwtq @ 2500rpmThis was a 15psi spike settling down to 11 ( think I'm out of turbo ). Also very conservative timing, A/F around 10.5:1, CR of 8.7:1, stock polished/UNported 317 truck heads, and 91 octane.
Who here has an Incon setup where they managed to not lose boost on the top end? I replaced my actuators ( 4.5psi to 8psi ) and boost comes on faster, but it is still dropping boost, down to about 11 @ redline, hitting almost 15psi everywhere else.