need help or advice changing 80e shift settings
#1
need help or advice changing 80e shift settings
I recently put in 4.56 gears (previously had stock 3.73's) and the truck doesn't seem/feel like its shifting/downshifting right.
I'm N/A, nothing special w/my setup. HD2 kit is all that's been done to the trans. Does anyone have a bin file?
It messed me up at the track last year too w/not figuring it out, as I was running a 27" tire. I'm still a beginner w/HPt.
31.9" tire
4.56 gears
anyone run something similar?
I'm N/A, nothing special w/my setup. HD2 kit is all that's been done to the trans. Does anyone have a bin file?
It messed me up at the track last year too w/not figuring it out, as I was running a 27" tire. I'm still a beginner w/HPt.
31.9" tire
4.56 gears
anyone run something similar?
#3
It does, the upshifts are ok on my 31" but the downshift isn't there at cruising speed. I can step on it in 4th and it only drops to 3rd when I'm WELL in my range for 2nd.
On my drag tire, 27", the upshift is off. It hangs up and bounces off the rev or something even though its set to shift at 5600 and rev is at 6000.
On my drag tire, 27", the upshift is off. It hangs up and bounces off the rev or something even though its set to shift at 5600 and rev is at 6000.
#6
I was gonna try setting the points off this, but they are way to spread apart w/what I have on hpt to what the graph says
http://www.f-body.org/gears/
http://www.f-body.org/gears/
#7
These are my shift settings from what HPT adjusted me to after changing to 4.56's and a 31.6" tire
Labels Speed
1 -> 2 Shift 20.38672
2 -> 3 Shift 44.84766
3 -> 4 Shift 61.16016
2 -> 1 Shift 28.53906
3 -> 2 Shift 52.18750
4 -> 3 Shift 69.31250
using the calculator/or a spreadsheet I got off here someone made (can't remember where I got it )
Labels Speed
1 -> 2 Shift 48.2
2 -> 3 Shift 80.7
3 -> 4 Shift 119.7
2 -> 1 Shift
3 -> 2 Shift
4 -> 3 Shift
this is of course the speed it says at the 5800rpm shift point. Is that accurate and what should the downshift be set at?
Labels Speed
1 -> 2 Shift 20.38672
2 -> 3 Shift 44.84766
3 -> 4 Shift 61.16016
2 -> 1 Shift 28.53906
3 -> 2 Shift 52.18750
4 -> 3 Shift 69.31250
using the calculator/or a spreadsheet I got off here someone made (can't remember where I got it )
Labels Speed
1 -> 2 Shift 48.2
2 -> 3 Shift 80.7
3 -> 4 Shift 119.7
2 -> 1 Shift
3 -> 2 Shift
4 -> 3 Shift
this is of course the speed it says at the 5800rpm shift point. Is that accurate and what should the downshift be set at?
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#9
I just filled up the tank went out in the middle of nowhere and moved the shifts around until I was happy with it. The. I did the same thing with the tow/haul button pushed. Mines a blast with tow/haul mode, because it holds gears longer and downshifts a lot sooner. It's really fun on a twisty curvy road.
#10
lol, that's typically what my brother does I found this spread sheet on HPT, I'm tryng to understand it. I'm trying to figure out how to post it but it won't let me post an excel file
There's a few parameter's I'm confused on
edit: here's the link but I wanted to post up my file setup
http://www.hptuners.com/forum/showthread.php?t=27981
There's a few parameter's I'm confused on
edit: here's the link but I wanted to post up my file setup
http://www.hptuners.com/forum/showthread.php?t=27981