FORCED INDUCTION Turbos | Superchargers | Intercoolers | H2O/Meth Injection
Sponsored by:
Sponsored by:

680hp on the old 5.3

Thread Tools
 
Search this Thread
 
Old Oct 8, 2006 | 06:59 PM
  #41  
Last Call's Avatar
TOTM: January 2007
iTrader: (4)
 
Joined: Apr 2004
Posts: 2,678
Likes: 17
Default

Originally Posted by TURBO8
Yeah! I keep thinking The same thing, there is alot of f body turbo guys droping 1/2 second going with the th400. I keep finding good deals on the gv units to make it a 6 speed auto. I just want to run 10.90 on the stock bottom end. I know its a big want but I think I have enough power. I think. I think if I can run a trap speed of 125mph and 1.8 60ft. I think I would be close, 1.6 60ft and I think I will have it. I think it will be harder to do it with the 6 speed, but it is posible. I think it will take alot of practice and a more agressive cam to get the power to come on earlyer. Or just a th400 and a good stall.
The 80e is definately going to cost you sometime. It horrible out of hole. I think you have the power to run a 10.90. But that 6 speed probaby has to go if you want a 10. How many gear changes, 3 or 4? Cheapest and easiest is a th400 with a stall.
Reply
Old Oct 8, 2006 | 07:10 PM
  #42  
TURBO8's Avatar
Thread Starter
TECH Resident
iTrader: (9)
 
Joined: Apr 2005
Posts: 872
Likes: 1
From: San Francisco Ca
Default

I agree, I was thinking of having rossler build me a 4l80e with the 2.75 1st gear. But I think I would perfer the 6 speed auto of the th400 and GV unit. I think I will be going that route at the end of the year.
Reply
Old Oct 8, 2006 | 07:43 PM
  #43  
Last Call's Avatar
TOTM: January 2007
iTrader: (4)
 
Joined: Apr 2004
Posts: 2,678
Likes: 17
Default

Originally Posted by TURBO8
I agree, I was thinking of having rossler build me a 4l80e with the 2.75 1st gear. But I think I would perfer the 6 speed auto of the th400 and GV unit. I think I will be going that route at the end of the year.
Or the new 6 speed auto, probably more pricey, but an option.

https://www.performancetrucks.net/fo...ply&p=3458690# How the hell are you running 43# injectors at 680hp???
Reply
Old Oct 8, 2006 | 08:15 PM
  #44  
Deckhand's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Apr 2003
Posts: 1,887
Likes: 1
From: Corpus Christi, TX
Default

Originally Posted by j's01silverado
Or the new 6 speed auto, probably more pricey, but an option.

https://www.performancetrucks.net/fo...ply&p=3458690# How the hell are you running 43# injectors at 680hp???

His meth is probably fueling a good portion of the demand.
Reply
Old Oct 8, 2006 | 09:56 PM
  #45  
TURBO8's Avatar
Thread Starter
TECH Resident
iTrader: (9)
 
Joined: Apr 2005
Posts: 872
Likes: 1
From: San Francisco Ca
Default

All I have is the stock fuel pump+255 inline+boost a pump+alky dual nossel+42-43lbs inj. I dont know my duty cycle, I keep forgeting to ask. It still needs work in the tune.
Reply
Old Oct 9, 2006 | 09:08 AM
  #46  
vanillagorilla's Avatar
TECH Veteran
iTrader: (1)
 
Joined: Apr 2004
Posts: 4,038
Likes: 1
From: Arizona Bay
Default

Originally Posted by TURBO8
Here is the dyno, this is just stupid. 678hp and 776tq. I also included the dyno of when the motor let go.
How come you are only at 78mph at that rpm? Those don't seem like 4th gear pulls to me? Are you sure you were in 4th, if not then those numbers should be higher. Also I noticed it says flywheel hp/tq, where did you guys come up with the correction factors to get fwhp/fwtq? Why not just use rw numbers?
Reply
Old Oct 9, 2006 | 09:38 PM
  #47  
TURBO8's Avatar
Thread Starter
TECH Resident
iTrader: (9)
 
Joined: Apr 2005
Posts: 872
Likes: 1
From: San Francisco Ca
Default

It is rwhp, for some reason (I dont know why) but the graph always reads fly wheel hp. I remember the first time I got dyno tunning from Synergy, as soon as I got home I read the same thing fly wheel hp. I called up Rick and asked are pulling a number on me and he said that it says flywheel but it is rear wheel hp. I double check, with a dynojet and the numbers are preaty close. The dynopack normally is able to put a harder load on the turbo and boost comes in alittle sooner, but the numbers are close. As for the MPH, my speedo is not reading right. Ever since the 6 speed swap. It is SAE corrected. here is a dynojet dyno on 20psi.
Attached Thumbnails 680hp on the old 5.3-silverado-002.jpg  
Reply
Old Oct 9, 2006 | 09:43 PM
  #48  
trever1t's Avatar
2nd fastest 5.3 ECSB
iTrader: (14)
 
Joined: Oct 2005
Posts: 26,690
Likes: 1
From: NorCal
Default

Synergy graphs all print out saying fwhp but the #'s are RWHP for sure. He really should correct that!
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
maxspeed05V
GM Parts Classifieds
3
Sep 23, 2015 10:48 AM
nickrench3
New Members
6
Sep 17, 2015 08:48 AM
OVOAustin
Tuning, Diagnostics, Electronics, and Wiring
4
Sep 15, 2015 08:32 PM
11MPG
INTERNAL ENGINE MODIFICATIONS
3
Sep 10, 2015 08:34 PM
11MPG
New Members
6
Sep 8, 2015 04:52 AM




All times are GMT -5. The time now is 07:27 AM.