Shift RPM's - The 1947 - Present Chevrolet & GMC Truck Message Board Network

solidaxel · 09-10-2013, 10:37 AM

Is there any advantage to raising the shift points in first and second,(higher RPM's) this is on a 2004 5.3 in a 78 1/2 ton.

Are there any other items besides the VSS and gear ratio- tire size that should be changed when re programing?

68GMCCustom · 09-10-2013, 01:44 PM

just if you're racing it

solidaxel · 09-10-2013, 01:45 PM

Only with myself !!!!

smoky02 · 09-18-2013, 11:05 AM

A lot of tuners, or at least the ones that I have spoken with will raise up the shift points for wide open throttle, but will only change the shift pressures for normal driving, it's supposed to just firm the shifts up and prolong the life of the tranny

BR3W CITY · 09-18-2013, 12:55 PM

The true answer to this depends on what tranny you have, what gear you have, what cam you run etc.

My 4l80e has a really long first couple gears, so raising the shift points under those loads wouldn't really get me anywhere. But for example if your giving it heavy pedal on the freeway from 3rd, and your truck is shifting early because the tuner kept it stock, then yes, there could be an advantage to raising the shift points.

From a racing perspective, your redline and shift points are dependent on your setup as well. A truck motor with an aftermarket intake mani, cam, good flowing exhaust etc, could take advantage of a few hundred extra RPM's. The stock setup under the same conditions would have no need, since at the top of the sweep its starting to lose power in the high rev's

solidaxel · 09-18-2013, 11:12 PM

Well the computer is back, along with the new harness so I guess I will live with what the programmer put in or took out.
I did ask to keep the purge connections so I guess I will need a charcoal container.
Is there one better than the other or can I use anything?

BR3W CITY · 09-18-2013, 11:36 PM

of all the things to keep in... does AZ break nuts about emissions stuff? The charc is really useless. Just run a vented cap or vent on the tank.

solidaxel · 09-18-2013, 11:51 PM

No I don't think they care about evap can, "I" just thought it would be a nice thing to have as the garage stinks when I pull it in hot, and I thought this would help with less complaints

BR3W CITY · 09-19-2013, 02:02 PM

Starting my truck in a closed garage would be paramount to an attempted suicide....so I get where your coming from. I removed anything that didn't mean more power.

dkauffman05 · 09-24-2013, 06:20 PM

My 68 with a cammed 02 ls1 4l60 shifts at 7k

solidaxel · 09-26-2013, 01:44 AM

Quote:

Originally Posted by dkauffman05

My 68 with a cammed 02 ls1 4l60 shifts at 7k

Did you alter the 4L60E and the torque converter?

dkauffman05 · 09-26-2013, 07:12 AM

Trans has vette servos , tuneing adjustments and a circle d 3200 converter.

09-10-2013, 10:37 AM	#1
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Shift RPM's Is there any advantage to raising the shift points in first and second,(higher RPM's) this is on a 2004 5.3 in a 78 1/2 ton. Are there any other items besides the VSS and gear ratio- tire size that should be changed when re programing? __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

09-10-2013, 01:44 PM	#2
68GMCCustom Truck and auto performance nut Join Date: Feb 2007 Location: McKinney,Texas Posts: 3,848	Re: Shift RPM's just if you're racing it __________________ Kurt - '68 GMC short step - NIB '09 LY6 6.0L crate motor w/mods, NIB '12 crate 4L85e w/billet 3k stall Circle D, 3.73 posi 12 bolt, DynaTech f-swap headers, 3/4 drop, handling mods, etc. - my toy '72 Chevy LWB C-10 Highlander - 350/350 ps/pb/tilt/ac - not original but close '06 Chevy TrailBlazerSS - LS2/4L70e - little black hot rod SUV - my DD '18 Kia Sorento - wife's econo-driver '95 Chevy S10 - reg cab shortbed, LS, 4.3, auto... my '68's powertrain and chassis build -links broken A surprise phase - carb to efi -links broken

09-10-2013, 01:45 PM	#3
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: Shift RPM's Only with myself !!!! __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

09-18-2013, 11:05 AM	#4
smoky02 Registered User Join Date: Oct 2003 Location: Sunny, Florida, some might call it South Alabama Posts: 834	Re: Shift RPM's A lot of tuners, or at least the ones that I have spoken with will raise up the shift points for wide open throttle, but will only change the shift pressures for normal driving, it's supposed to just firm the shifts up and prolong the life of the tranny __________________ Just sold my C10...sad day... Looking for a 1972 Blazer to hopefully fill the hole in my heart.

09-18-2013, 12:55 PM	#5
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Shift RPM's The true answer to this depends on what tranny you have, what gear you have, what cam you run etc. My 4l80e has a really long first couple gears, so raising the shift points under those loads wouldn't really get me anywhere. But for example if your giving it heavy pedal on the freeway from 3rd, and your truck is shifting early because the tuner kept it stock, then yes, there could be an advantage to raising the shift points. From a racing perspective, your redline and shift points are dependent on your setup as well. A truck motor with an aftermarket intake mani, cam, good flowing exhaust etc, could take advantage of a few hundred extra RPM's. The stock setup under the same conditions would have no need, since at the top of the sweep its starting to lose power in the high rev's __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

09-18-2013, 11:12 PM	#6
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: Shift RPM's Well the computer is back, along with the new harness so I guess I will live with what the programmer put in or took out. I did ask to keep the purge connections so I guess I will need a charcoal container. Is there one better than the other or can I use anything? __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

09-18-2013, 11:36 PM	#7
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Shift RPM's of all the things to keep in... does AZ break nuts about emissions stuff? The charc is really useless. Just run a vented cap or vent on the tank. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

09-18-2013, 11:51 PM	#8
solidaxel Registered User Join Date: Dec 2002 Location: Cactus Patch So. Az Posts: 4,749	Re: Shift RPM's No I don't think they care about evap can, "I" just thought it would be a nice thing to have as the garage stinks when I pull it in hot, and I thought this would help with less complaints __________________ 53 TuTone Extended Cab 350 4-Spd 3:08 (SOLD) 53 Chevy Moldy pearl green ZZ-4 4L60E 9" 3:25 55 GMC 1st Black Mll (ZZ4) ZZ6 TKO 600 5 sp 3:73 62 Solidaxle Corvette Roman Red (327 340hp 4spd 3:36) C4 & C5 suspension tube chassis LS 3 4L70E 65 Corvette Coupe 327 350hp 4spd 4:11 78 Black Silverado SWB (350/350) 5.3 & 4L60E 3:42 2000 S-Type 3.0 (wife cruiser) 2003 GMC SCSB 5.3 4L60E 3:42

09-19-2013, 02:02 PM	#9
BR3W CITY meowMEOWmeowMEOW Join Date: Sep 2009 Location: MKE WI Posts: 7,128	Re: Shift RPM's Starting my truck in a closed garage would be paramount to an attempted suicide....so I get where your coming from. I removed anything that didn't mean more power. __________________ *'66 Short Step / SD Tuned / Big Cam LQ4 / Backhalfed /Built 4l80e / #REBUILDEVERYTHING* MY BUILD THE H8RDCPTR //\\ MY YOUTUBE CHANNEL REV J HD

09-24-2013, 06:20 PM	#10
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 416	Re: Shift RPM's My 68 with a cammed 02 ls1 4l60 shifts at 7k

09-26-2013, 07:12 AM	#12
dkauffman05 Registered User Join Date: Jan 2008 Location: Cumming, Georgia Posts: 416	Re: Shift RPM's Trans has vette servos , tuneing adjustments and a circle d 3200 converter.



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