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#1 |
Registered User
Join Date: Dec 2011
Location: Camp Lejeune, NC
Posts: 169
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motor installed...now maybe 700r4 issue
i got my new 350 installed, went for the first drive and im thinking i have a tranny issue. transmission seemed to be shifting fine beforehand...i did spill about 1/2 quart after i disconnected the cooler lines (which i replaced).
i REALLY have to mash the gas in order for it to move and when it does shift, it's VERY soft...it feels like it's low on fluid, but the fluid level is good. i have all the appropriate tv cable brackets and adjusted the cable exactly like it's supposed to be and the geometry looks fine. i did disconnect a buch of wires, but im pretty sure i got all the necessary ones plugged back in...there is a large diameter vacum line coming out of the cab that i have not hooked back up, but i think it went to the cruise control. the low pressure lockup switch is connected as is the other lockup switch. 86 k10 originally with a 305, 700r4 and all the emissions equipment. |
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#2 |
Registered User
Join Date: May 2010
Location: Portland, OR
Posts: 37
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Re: motor installed...now maybe 700r4 issue
torque converter?? Was it new or used and what's the stall speed? If you are sure everything is correct I'd start there. I know I put in a "off brand" converter in my old truck and it gave it that "marshmallow effect". Changed to a TCI and problem solved.
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lowfastnloud ![]() |
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#3 |
Registered User
![]() Join Date: Oct 2011
Location: Wildomar, CA
Posts: 466
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Re: motor installed...now maybe 700r4 issue
Double check the TV cable. Push the tab down and slide the adjusting housing all the way back towards the firewall, release the tab and then go in the truck and push the gas to the floor once without the truck running. You should hear it clicking as you are stepping on the gas.
That's the factory setting.... |
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#4 | |
Registered User
Join Date: May 2010
Location: Portland, OR
Posts: 37
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Re: motor installed...now maybe 700r4 issue
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lowfastnloud ![]() |
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#5 | |
Registered User
Join Date: Dec 2011
Location: Camp Lejeune, NC
Posts: 169
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Re: motor installed...now maybe 700r4 issue
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#6 |
Registered User
Join Date: Oct 2011
Location: Emory TX
Posts: 900
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Re: motor installed...now maybe 700r4 issue
Did you have any trouble bolting the converter up?
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___________________ 78 ccsb dually 5.3 4l60e http://67-72chevytrucks.com/vboard/s...d.php?t=491551 |
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#7 |
Registered User
Join Date: Dec 2011
Location: Camp Lejeune, NC
Posts: 169
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Re: motor installed...now maybe 700r4 issue
not any that made me stop and think...but i've only put a motor in once before this. here's what i did:
1. lowered motor in 2. lined up the pins on the bellhousing 3. tightened the bellhousing bolts and motor mounts 4. lined up the welded nuts on the TC with the holes in the flexplate and tightened them. it didnt really give me any issues tightening / lining up...but i just read another post about "working the converter out until the nose piece inserts into the crankshaft". what exactly does that mean? cause all i did was tighten the flexplate to TC bolts down... |
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#8 | |
Registered User
Join Date: Dec 2011
Location: Camp Lejeune, NC
Posts: 169
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Re: motor installed...now maybe 700r4 issue
Quote:
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#9 |
Registered User
Join Date: Dec 2011
Location: Camp Lejeune, NC
Posts: 169
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Re: motor installed...now maybe 700r4 issue
took off the dust cover, unbolted the TC. it does spin freely when not connected to the flexplate, but it seemed a little too far away, so i shimmed it a little and bolted it back up. no effect.
i tried running it with the tv cable pulled tight. no effect really, just wouldnt shift out of 1st at all. guess it's time to either take it to a transmission shop, or just order a new one. fml |
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#10 |
Registered User
Join Date: Dec 2011
Location: Camp Lejeune, NC
Posts: 169
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Re: motor installed...now maybe 700r4 issue
i may have found a 4L60...this would be a completely bolt on swap correct?
he says it's not electronic, but if it were what would i need to make it work? |
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#11 |
Registered User
Join Date: Dec 2007
Location: Palmer, Alaska
Posts: 13,821
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Re: motor installed...now maybe 700r4 issue
4L60 and 700R4 are the same transmission
4L60E is different. It's electronically controlled and needs a computer or aftermarket controller. Posted via Mobile Device
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#12 |
Registered User
Join Date: Dec 2011
Location: Camp Lejeune, NC
Posts: 169
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Re: motor installed...now maybe 700r4 issue
i decided to just do some driving with the tranny issues....
my first evaluation of the issue was incorrect. the tranny does actually start off in first gear, but it changes to 2nd really fast and it's a very long and soft shift. 2-3 seems fine as well as into OD. downshifts are firm to 2nd and it doesnt seem to go to 1 when coming to a stop. no doubt there is something going on with the tranny, but these problems couldve been there to begin with. the main problem is the lack of power (hence feeling like the tranny is out of fluid). i changed from the 305 to a 350 so i was really expecting a huge difference, and it just seems like a total dog when picking up speed. this week i'll be checking the timing gears and re-installing the dizzy. any other suggestions are appreciated |
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#13 |
78K & 79C Jimmys
Join Date: Nov 2009
Location: Ottawa Ont CANADA
Posts: 7,901
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Re: motor installed...now maybe 700r4 issue
[QUOTE=86 K-10;5253954]...there is a large diameter vacum line coming out of the cab that i have not hooked back up, but i think it went to the cruise control.
but all hoses/lines to carb/intakr are plugged or used i found a huge split in my(79) 3/8ths hose to the canister,open on the bottom
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John 1978 GMCJimmy4X4-350/203 1979 GMCJimmy4X2-305/350 |
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