Yeah, the HD2 says to use those shims in the 2nd accumulator--but don't use them. Waaaaaaay too hard of shifts. Also, turn down the line pressures.
All of the parts look to be awesome. I personally wouldn't have done the synthetic fluid. The synthetic is so slippery. Should have gone with the basic tranny fluid.
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
so aah any idea about the PROBLEM tex.
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
put a transgo 46mod vacuum shift modulator in the valve body, get rid of the POS electronic EPC. Oh yeah, you'll need the bypass for boost pressure that they sell for FI applications.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
hey red ,were the heck do you install the modulator on our trannies?doesnt seem to be a spot .of course externally .thats were most vac mods ive ever seen.funny tho i had a tranniy guy tell me i might be able too adjust the epc on mine ,i guess some of them have a setscrew.just hearsay tho.
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
its internal, the device is black and about 1.5" diameter, slides into the valve body. Programmable, not adjustable. The vacuum one requires you drill and tap the case for a 1/8 NPT fitting to bring vacuum into the transmission. A very easy modification. You remove the electronic one, leave it connected and set it to the side, and install the vacuum unit.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
thats exactly what i was asking.if you had to tap ,i was wondering how it went.i know about the epc inside ive had too replace b4.sounds like a good idea tho red ,as usual.
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
Yes, the problem is to change fluid back to normal and turn down the line pressures using the EPC. It is as Greg says...but you need to drain the tranny (already doing so when switching fluid types) and remove the pan and filter to get to it. It DOES have a slot head set screw. Turn it about 1/4 turn to the left... I am not saying 100% that the fluid is causing the problem--or that its the shifting thats to too rough--but they could be...Originally Posted by Ramsey
2000 ECSB 6.0L
TORQUER V2 CAM ● COMP 918's ● 7.4 HARDENED PUSHRODS ● K&N SERIES 77 CAI ● 80mm BBK ●PACESETTER LT HEADERS AND 3'' ORY ● SUPER 40 FLOW ● 3000 STALL ● 4.10s ● BUILT 80e ● VORTEC PERFORMANCE TUNE ● MSD 8.5mm PLUG WIRES● ELEC. CUTOUT ● UD & ALT PULLEYS ● FLEX-A-LITE E-FANS ● 22" CENTERLINE STINGRAY III's ● LUND FIBERGLASS TONNEAU ● 2" LEVELING SHACKLES ● 12K HID LOWS & FOGS ● LEDs ● DEBADGED ● WHITE-FACED ESCALADE GAUGES ● KICKER 450.1 ● 2-CVR 10's ● DS60's ● K693's
the shifting is not too rough for sure.i actually think i need more line pressure.because its not completing the shift quick enough.
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
Just chiming in... The point of the 46-MOD is to eliminate the potential for the EPC not to build pressure needed to shift properly. The PCM depends on the trans fluid pressure for a number of things. I'm having a similar issue with "rev'n" b/t gears, except mine only happen at 80mph during downshifts. I went from the 46-MOD to a new trans case on my last rebuild. The pressure seemed to high (trans shifted hard as hell) with the 46-MOD & NO WASHERS in the accumulator (on the previous trans build). I decided to switch back to the EPC for an experiment (on my last build), and looks like I'll be working to analyze what's best medium (pressure wise using the modifier table) for resolving my trans pressure issue.
As for the comments on pressure to apply the 2-3 shft (don't remember who made that comment), but to my knowledge, band apply is on engagement of 2nd & 4th. The band is released on 3rd gear. So, there should be no band related issue on the 2-3 shift. The only thing I could see (related to the band) would be the servo seals allowing leak-by, which wouldn't build enough pressure to slide back to allow the server pin to move and release the band. Maybe I'm not understanding what was being suggested.If that's the case, please feel free to correct me, as I claim not to be the pro... just one who's done enough builds to gain a "minute" amount of first-hand experience.
BTW... txart, I agree on the use of REGULAR fluid. A couple of well-known builders in the trans performance world have recommended not using synthetic. I buy the cheap stuff. Have 2000 hard-drivin' miles on my last rebuild, and I decided to do it RIGHT this time (no cheap part shortcuts).
Last edited by 1BADC10; 05-01-2008 at 07:42 PM.
5.3L '86 Silverado (E/T: 14.37s @ 94mph) - First Time Out!Test-n-Tune (Nov 23, 2008) - 13.65s @ 98mph
thanks for the advice c10.i guess itll be process of elimination ,some more of the fn money game.im pissed ive got a half a fortune in it this time and i really had high hopes for a perfect functioning tranny.damn i even splurged on that synthetic for like 120 bucks.is theyre ever a answer,seems like the problems keep coming,no matter what you do ya still shopulda done something else ,wth.alrighy then were should i start ,46 mod ,change fluid,or epc pressure cranking it up .or what about the frigging servo leaking or not fuunctioning properly.?thanks guys i appreciate it im just really annoyed at my little angel.lol
mods:2004 sierra ext sb,20s ,big brake kit w,hawk pads,air bagged,2006 6.0 lq4 swap,vortec supercharged10psi, air to water intercooled w/ dual electric fans on it ,snow meth injection kit,60lbers, e-fans ,big radiator swap ,cam 218 /222 548/550 comp .hardened prs .1.85 comp roller rockers ,guideplates ,crane double springs,trans 4l65e built .pacesetter l/ts true duals w/x pipe and magnaflows,14 bolt rearend swap ,3.73s,aroemotive fuel pump system w/elec.fuel controller and bypass regulator a/n fittings, taylor 10.5s interceptor gauge,aem w/b a/f ,autometer boost/vac NELSON 93 OCTANE TUNED .
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