4l60e help with no line psi
U know what
When I went to get a o-ring for the end of the shaft
From the parts department ..
"They look parts up by vin."
we didn't have it ..I said wtf we stock that .
I said look it up for a 2002 1500
Well we had it for the 2002 and it match
The one I took off..
So I used it
I did not give it a 2nd thaught until right now..
I'm guessing the one we did not have wAs the smaller o-ring for the 298mm shaft
So by vin I'm susposed to have a trans with a 298mm shaft ???
Pod that sound right??
When I went to get a o-ring for the end of the shaft
From the parts department ..
"They look parts up by vin."
we didn't have it ..I said wtf we stock that .
I said look it up for a 2002 1500
Well we had it for the 2002 and it match
The one I took off..
So I used it
I did not give it a 2nd thaught until right now..
I'm guessing the one we did not have wAs the smaller o-ring for the 298mm shaft
So by vin I'm susposed to have a trans with a 298mm shaft ???
Pod that sound right??
Moderator
Joined: Aug 2010
Posts: 7,322
Likes: 528
From: Ann Arbor, MI
Well that explains it; I'm sorry I didn't catch it early when you first had the trans out.
The customer installed a 300mm trans when the truck needed a 298mm trans because it has an SBC engine. Then the customer installed a 298mm converter and that will simply not work in a 300mm trans.
Unfortunately if you install a 300mm converter into the trans you will find that it will not bolt up because the pilot of the converter will bottom out in the crank long before the bell housing bolts up.
The customer has two solutions:
1. Buy the correct 298mm 4L60E; his converter should then work.
2. Buy a 300mm converter for the trans.
However he also needs to buy GM conversion kit 19154766 ($200) which includes a big bellhousing spacer to allow the 300mm trans to bolt up to a SBC.
http://www.gmperformancemotor.com/parts/19154766.html
Well, there is a third option - a custom built converter, but they tend to be in the $800 range.
BTW - 300mm 4L60e are often called "LS-style" while the 298mm are often called "LT-style".
Again, I'm sorry I didn't recognize the problem before you re-installed the trans.
The customer installed a 300mm trans when the truck needed a 298mm trans because it has an SBC engine. Then the customer installed a 298mm converter and that will simply not work in a 300mm trans.
Unfortunately if you install a 300mm converter into the trans you will find that it will not bolt up because the pilot of the converter will bottom out in the crank long before the bell housing bolts up.
The customer has two solutions:
1. Buy the correct 298mm 4L60E; his converter should then work.
2. Buy a 300mm converter for the trans.
However he also needs to buy GM conversion kit 19154766 ($200) which includes a big bellhousing spacer to allow the 300mm trans to bolt up to a SBC.
http://www.gmperformancemotor.com/parts/19154766.html
Well, there is a third option - a custom built converter, but they tend to be in the $800 range.
BTW - 300mm 4L60e are often called "LS-style" while the 298mm are often called "LT-style".
Again, I'm sorry I didn't recognize the problem before you re-installed the trans.
Ok so
I 100% have a 300mm trans
And u think I have a 298mm converter
How to Prove that ??
I have the 300mm trans And what would happen if It did have the matching 300mm t/c
Or theirs no way because it won't physically fit...
I 100% have a 300mm trans
And u think I have a 298mm converter
How to Prove that ??
I have the 300mm trans And what would happen if It did have the matching 300mm t/c
Or theirs no way because it won't physically fit...
Last edited by im-not-guilty; Feb 21, 2015 at 08:12 PM.
Moderator
Joined: Aug 2010
Posts: 7,322
Likes: 528
From: Ann Arbor, MI
(Thanks for editing your post; it makes more sense now.)
I don't have the exact measurements, but a 300mm LS-style converter is taller (longer pilot) than a 298mm LT-style converter.
Not exactly sure what your last two lines mean, but all 300mm 4l60e converters are interchangeable. Since it now appears your gap between the converter pad and flexplate is much more than 3/16", it seems very likely you have the wrong converter. (Either a 298mm or something odd-ball.)
I don't have the exact measurements, but a 300mm LS-style converter is taller (longer pilot) than a 298mm LT-style converter.
Not exactly sure what your last two lines mean, but all 300mm 4l60e converters are interchangeable. Since it now appears your gap between the converter pad and flexplate is much more than 3/16", it seems very likely you have the wrong converter. (Either a 298mm or something odd-ball.)
Gap appeared to be right on the money ....
another thing
The trans lines are all bent the wrong way where the go into the case
Their kinda jammed against the o2
I just assumed it was due to the hacked install ...
But
Are the cooler fittings in the same locations between the two different trans .?
And maybe they were forced to fit because the didn't line up with the new trans because their in slightly different spots ??
another thing
The trans lines are all bent the wrong way where the go into the case
Their kinda jammed against the o2
I just assumed it was due to the hacked install ...
But
Are the cooler fittings in the same locations between the two different trans .?
And maybe they were forced to fit because the didn't line up with the new trans because their in slightly different spots ??
Moderator
Joined: Aug 2010
Posts: 7,322
Likes: 528
From: Ann Arbor, MI
Both styles of 4l60E have the same case and the cooler lines are in the same position.
Make sure they didn't bend the lines so badly that one got completely pinched.
Most LS engine vehicles have the 300mm (LS-style) 300mm input shaft 4L60E, but there are exceptions:
* The C5 Vette uses the 298mm (LT-style) trans because the trans is in the rear after the torque tube.
* Some '98 and '99 trucks have an unusual LS engine with a longer crank and I honestly don't know which trans they take. (Probably the 298mm (LT-style).
As far as I know, no non-LS engines take the LS-style 300mm trans.
Since the truck is a '99 it might have the normal or the long crank.
I don't have the experience to tell by looking at the flexplate, but I'm sure someone here does.
Make sure they didn't bend the lines so badly that one got completely pinched.
Most LS engine vehicles have the 300mm (LS-style) 300mm input shaft 4L60E, but there are exceptions:
* The C5 Vette uses the 298mm (LT-style) trans because the trans is in the rear after the torque tube.
* Some '98 and '99 trucks have an unusual LS engine with a longer crank and I honestly don't know which trans they take. (Probably the 298mm (LT-style).
As far as I know, no non-LS engines take the LS-style 300mm trans.
Since the truck is a '99 it might have the normal or the long crank.
I don't have the experience to tell by looking at the flexplate, but I'm sure someone here does.
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Moderator
Joined: Aug 2010
Posts: 7,322
Likes: 528
From: Ann Arbor, MI
You certainly have a '99 LS-style 300mm 4L60E.
Its hard to tell on the converter. I just went to measure a Yank SS3600 LS-style converter.
Total height = 7-1/4" (maybe 7-3/8")
Length of pilot past the mounting pads = 5/8"
A side pic of the flexplate might help determine whether it is flat or bowed. It looks mostly flat which would indicate a standard length crank and not the odd '99-truck long crank, but I am not sure.
This is getting out of my limited experience comfort level.
Hopefully Chuck at FLT and/or Chris at CircleD can see the problem.
Its hard to tell on the converter. I just went to measure a Yank SS3600 LS-style converter.
Total height = 7-1/4" (maybe 7-3/8")
Length of pilot past the mounting pads = 5/8"
A side pic of the flexplate might help determine whether it is flat or bowed. It looks mostly flat which would indicate a standard length crank and not the odd '99-truck long crank, but I am not sure.
This is getting out of my limited experience comfort level.
Hopefully Chuck at FLT and/or Chris at CircleD can see the problem.
TECH Enthusiast
Joined: Sep 2010
Posts: 534
Likes: 2
That converter is for a 93-98 4l60..you need a tmbx..edit didnt see it was for old model 5.7..the transmission you have is for 99+ you have the wrong transmission..the converter is the right one for that motor...you need the one with no top bellhousing bolt
Last edited by GMCSIERRA5.3; Feb 25, 2015 at 12:35 AM.
Yep, you hit on the head. Just what I thought from the beginning, wrong trans.... right converter..... equals no pressure. Get the 298 model trans and you'll be good to go!
The flex plate is flat
I'm not familiar with the long crank you guys are talking about
I,remember the 99 6.0L
Didn't require a crank spacer when put in front of a 4l80
But this Is a 99 5.7
And it has a reman engine if that matters
I got a used trans coming should be here tomorrow I'll keep you posted
I'm not familiar with the long crank you guys are talking about
I,remember the 99 6.0L
Didn't require a crank spacer when put in front of a 4l80
But this Is a 99 5.7
And it has a reman engine if that matters
I got a used trans coming should be here tomorrow I'll keep you posted
The flex plate is flat
I'm not familiar with the long crank you guys are talking about
I,remember the 99 6.0L
Didn't require a crank spacer when put in front of a 4l80
But this Is a 99 5.7
And it has a reman engine if that matters
I got a used trans coming should be here tomorrow I'll keep you posted
I'm not familiar with the long crank you guys are talking about
I,remember the 99 6.0L
Didn't require a crank spacer when put in front of a 4l80
But this Is a 99 5.7
And it has a reman engine if that matters
I got a used trans coming should be here tomorrow I'll keep you posted
Finally got replacement trans from salvage yard today ...
Going to install on Monday ...
Thanks again .....
What years is the other trans good for ??
I may buy the core
Going to install on Monday ...
Thanks again .....
What years is the other trans good for ??
I may buy the core