Turned the boost up to 8lbs.
07-09-2005, 06:21 PM
#1
Turned the boost up to 8lbs.
Went to the track last night to see how much I lost with the 4l80e swap. I was guessing about .4-.6. I had a 2600 stall with the 4l60e. My 60 ft times were 2.1x-2.2x. With the 4l80e and stock stall the best I could manage was high 2.4s. I did manage a 2.37 using a Harlan 2-step. Now for the good stuff. I installed a boost controller. It is just a cheap thumb screw type with a lock down nut. I had to play with it for 5-6 passes before I got it set to 8 lbs. That was a pain in the butt. It was hot and humid last night. The da was around 2600. I could only manage high 13s and my best et of the night was a 13.76. My best with the 4l60e and stall was 13.18 in cooler weather. My old trap speeds were 104-105 mph. Last night I was trapping 109-110. My best was 110.87. 
I had more people asking me what I had done to the truck than I could beat off with a stick. Once I get a stall this thing will be unbelievable. If anyone is tuning a turbo don't even think about tuning it on a dyno. The track gives you real world results that a dyno cannot duplicate. At 8 psi on a stock 5.3 except for mods in sig the 5.3 is making 487 rwhp thru a 4l80e or 575 at the crank. 
I was hoping to make a little more power than this with a 5.7 and 11-12lbs. of boost. My goal with the truck was to run 12.5 on street tires and no weight reduction. I believe I can achieve that goal with a stall and cooler weather. Oh, did I mention how much I love turbos.
I had more people asking me what I had done to the truck than I could beat off with a stick. Once I get a stall this thing will be unbelievable. If anyone is tuning a turbo don't even think about tuning it on a dyno. The track gives you real world results that a dyno cannot duplicate. At 8 psi on a stock 5.3 except for mods in sig the 5.3 is making 487 rwhp thru a 4l80e or 575 at the crank. I was hoping to make a little more power than this with a 5.7 and 11-12lbs. of boost. My goal with the truck was to run 12.5 on street tires and no weight reduction. I believe I can achieve that goal with a stall and cooler weather. Oh, did I mention how much I love turbos.
Last edited by quicksilverado; 07-09-2005 at 08:46 PM.
07-09-2005, 07:51 PM
#4
Hey quick... a lot of us truck guys are going again on the 16th probably to commerce.. you interested?
That goes for you too Cammin, if you guys wanna go that day, i'll post up in the southern section about where were meeting and when and what not so we can drive up there.
That goes for you too Cammin, if you guys wanna go that day, i'll post up in the southern section about where were meeting and when and what not so we can drive up there.
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07-10-2005, 04:13 PM
#10
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Originally Posted by quicksilverado
Thanks F8L. I'm using a SMC alcy kit. I have an intercooler sitting in the basement. Just need to find time to fab up some tubing for it.
Hopefully I with have my truck running soon. So whens the stall goin on? 
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Justin