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Discussion Starter · #1 ·
I'm swapping a 4L80 into my 1997 K1500 Suburban w/5.7. I've read the threads, but can't find the part number I'm looking for. Hopefully one of you can help. Looking for the GM part number for the flex plate / torque converter dust cover. All I can find is the number for the 5.3/6.0/4.8 cover which I understand is different.
 

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I'm swapping a 4L80 into my 1997 K1500 Suburban w/5.7. I've read the threads, but can't find the part number I'm looking for. Hopefully one of you can help. Looking for the GM part number for the flex plate / torque converter dust cover. All I can find is the number for the 5.3/6.0/4.8 cover which I understand is different.
Here is a list of proper combos for the different crank hub

Crankshaft Replacement Caution For
1998-2005 GM 4.3, 4.8, 5.3, 5.7 & 6.0L Engines

The AERA Technical Committee offers the following information on crankshaft replacement caution for 1998-2003 GM 4.3, 4.8, 5.3, 5.7 and 6.0L engines. Design changes in the flywheel flange thickness have been made to some crankshafts used in the above-mentioned engines. This bulletin is being re-published with additional information.

The later crankshafts are shorter on the flywheel flange as seen in the listing below. These changes are due to the many different vehicle / transmission combinations being built by GM.

A flywheel spacer ring GM Part #12563532 and a longer bolt set GM Part #12563533 is required when using a thin flange crankshaft to replace a thick flange crankshaft. Also, if the crankshaft is being used in a vehicle, which is a standard shift application, you also need pilot bushing GM Part #12557583 or 12479894.

Note: GM part numbers correct as of 12-18-04.

Years Liters Casting # Trans Flange Thickness

1998 early 4.3L 236, 255 V-6 1.62 thick flange
1998+up 4.3L 236, 255 V-6 1.500 thick flange
1999-2000 4.8L 312 V-8 M/T 1.250 thick flange
1999-2000 6.0L 215 V-8 1.250 thick flange
1999-2005 4.8L 482 V-8 A/T .857 thick flange
2001-2005 4.8L 482 V-8 M/T .857 thick flange
1999-2005 5.3L 216 V-8 A/T .857 thick flange
1997-2005 5.7L 216 V-8 .857 thick flange
2001-2005 6.0L 216 V-8 .857 thick flange




The info you seek is contained within this post of mine.
http://www.pacificp.com/forum/viewtopic.php?t=7252&highlight=hughes

And diagram showing the crank flange width
ccrp_0810_04_zengine_transmission_swap_gen_3illustration_position_crankshaft_flange.jpg


peace
Hog
 

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Discussion Starter · #3 ·
I think you may have either misunderstood what I was asking for, or posted to the incorrect thread.

What I am looking for is the GM Part # for the dust cover for the torque converter for a 4L80 behind the L31 5.7 Vortec in my 1997 Suburban.
 

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I think you may have either misunderstood what I was asking for, or posted to the incorrect thread.

What I am looking for is the GM Part # for the dust cover for the torque converter for a 4L80 behind the L31 5.7 Vortec in my 1997 Suburban.
What year 4L80 do you have?
 

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Originally I thought you were looking for a TC, but you are looking for a 4l80e/GEN 1 engine dust cover.

These 2 torque converters allow a 4l80e to be installed behind a GEN 1 or GEN 1-E(Vortec 350-305)
19299804 2,400-2,800
RPM stall
4L80E/4L85E – mate to early Gen 1 SB/BB (dual bolt
pattern – 10.75" and 11.5")
19299805 3,000-3,400
RPM stall
4L80E/4L85E – mate to early Gen 1 SB/BB (dual bolt
pattern – 10.75" and 11.5")


This p/n is for a 4l80e/85e trans behind a GEN 3/4 engine, not GEN 1.
C. 19259119
Transmission Installation Kit – 4L80 Series
• Use with all LS engines to mate transmission fully with
the engine
• Includes flywheel cover, hardware and fastener torque specs
• Does not include flexplate
• Use flexplate 12654640 for 6-bolt crankshaft engines
and SuperMatic™ converters
• Use flexplate 12636325 for 8-bolt crankshaft engines
and SuperMatic™ converters
• All production converters must use crankshaft adapters
(see kits on page 350)

peace
Hog
 

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Discussion Starter · #7 ·
Originally I thought you were looking for a TC, but you are looking for a 4l80e/GEN 1 engine dust cover.

These 2 torque converters allow a 4l80e to be installed behind a GEN 1 or GEN 1-E(Vortec 350-305)
19299804 2,400-2,800 RPM stall 4L80E/4L85E – mate to early Gen 1 SB/BB (dual bolt pattern – 10.75" and 11.5")
19299805 3,000-3,400 RPM stall 4L80E/4L85E – mate to early Gen 1 SB/BB (dual bolt pattern – 10.75" and 11.5")


This p/n is for a 4l80e/85e trans behind a GEN 3/4 engine, not GEN 1.
C. 19259119
Transmission Installation Kit – 4L80 Series
• Use with all LS engines to mate transmission fully with
the engine
• Includes flywheel cover, hardware and fastener torque specs
• Does not include flexplate
• Use flexplate 12654640 for 6-bolt crankshaft engines
and SuperMatic™ converters
• Use flexplate 12636325 for 8-bolt crankshaft engines
and SuperMatic™ converters
• All production converters must use crankshaft adapters
(see kits on page 350)

peace
Hog
Thanks. Yes, engine dust cover is what I am looking for. I do not know the year of the 4L80. It is 1997+ is all I know.

Here's the story:
Bought a 1997 K1500 Suburban in October of '10 in Virgnia, I live in Maryland. Drove home and it threw transmission codes 5 miles from home. Called a guy I knew and asked for his transmission guy's contact info. Called him. Told him what I bought and that it threw a transmission code. He then told me the code and the cure. Took it to him and he did the work. That's when we found out the trans was not the original one to the truck. Turned out to be a 4L60 out of a V6 vehicle. He fixed the trans and then replaced the TC (had a V6 TC in it) and flex plate (teeth worn to points) and I was back on the road. 2 months later, lost 4th gear. He rebuilt the 4L60. Got it back and a week later something let go, we don't know what, but the rear drive shaft snapped in half, trans case cracked and exploded. Basically everything between the motor and rearend was trashed. He came and got the truck, built a 4L60 and transfer case, replaced the rear drive shaft and told me to come get it, he was done. Truck ran great. Use it to haul scouts and a big 8.5x18x8 trailer full of camping gear between North Carolina and New York and everywhere in between. Had him install a bigger trans cooler and a temp gauge. Trans was great. Kept cool, never over 220, even on the BIG hill heading towards Asheville, NC, normally ran right at 190-200. Anyway, things were great. Until 2 weeks before thanksgiving. Alternator went out in the truck as I was driving home. Made it 20 miles. 10 miles from home, battery finally gave up the fight and died. Same time, one of the cooler lines came off (where soft line transitioned to hard line, clamp must not have been quite tight enough as it was still on the hose). Cooler line came off, fluid puke out and burned up 3rd/4th gear. Texted my trans guy who now lives 9 hours away and told him what happened. Told him I wanted to swap the 4L60 for the 4L80 instead of rebuilding the 4L60. He brought me a 4L80 & TC when he came down to visit family for Thanksgiving. He didn't have the right dust cover in his parts pile, otherwise he would have brought it to me too.

I will have to look at the TC my transmission guy gave me to see what the stall is on it, but it should be the stock one for a 2500 Suburban w/ 5.7 & 4L80.

Everything has been removed at this point except the wiring harness and PCM. Going to do the wiring changes with the harness in the truck. Pulling the PCM hopefully this Saturday. Need the dust cover before I can install the TC/Trans. Then swap the input shaft in the 243 (have the parts for that) and install the adapter and the 243.
 

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Discussion Starter · #8 · (Edited)
Here is a dust/ inspection cover for 4l80e and GEN 1(non GEn 3/4) engines.

From PATC
#52DC. 4L80E Dust Cover Inspection Plate. This is a custom made inspection plate for the LS1 type 4L80E dust cove above so it can be used with NON-LS1 type motors. Added 4-6-2011. Cost $49.00

http://www.transmissioncenter.net/4L60E_to_4L80E_Swap.htm

peace
Hog
Thanks. Saw that. I am hoping to find the correct dust cover, and if I cannot, then that is what I will buy.
 
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