Go Back   GM Square Body - 1973 - 1987 GM Truck Forum > '73 - '87 GM Truck Modifications > Transmission & Transfer Case > Transfer Case
Become a Supporting Member         Become a Preferred Vendor

Advertisements


User Tag List

Reply
 
Thread Tools Display Modes
Old 04-05-2017, 01:30 AM   #16
 
adamj's Avatar
adamj
Senior Member
 
Join Date: Apr 2015
Location: Colorado
Name: Terrence
Posts: 304

Year: 1987
Model: V20 Suburban
Engine: 5.7L TBI

Rep Power: 11

adamj will become famous soon enough
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Default
I did not know there were 3 different skid plates... well I guess I'll have to keep looking and trying. Do you happen to know if the transmission crossmembers are specific to a transmission type? That might help me rule out a skid plate that's paired to a type of transmission.



__________________
'87 V20 Burb Build
adamj is offline   Reply With Quote
Old 04-05-2017, 02:23 AM   #17
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
Originally Posted by adamj View Post
I did not know there were 3 different skid plates... well I guess I'll have to keep looking and trying. Do you happen to know if the transmission crossmembers are specific to a transmission type? That might help me rule out a skid plate that's paired to a type of transmission.
No, the crossmembers don't seem to matter by transmission. Seems they matter by year model more than anything. Then what matters is the height of the Tcase adapter. There is short and tall Tcase adapters. The taller one is needed for the older style crossmember that I have not pictured. The short Tcase adapters go to the 2 crossmembers I've pictured above, known as the W crossmember and I'm seeing the other called a Wavey crossmember.

I've got my shit scattered from my storage/shop, to my dad's property 70 miles away, and my buddies shed. I'll try to make it a point to gather up all the skid plates and take pics with their respective crossmember, except I don't have the W crossmember anymore.


__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-05-2017, 02:29 AM   #18
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
This doesn't help much since you can't see the crossmember and skidplate, but this is NP208 behind a 700r4 on the Wavey Crossmember pulled from an 87 Suburban. Notice how short the Tcase adapter is.

Here is skysurfer's pic. He too should have the same wavey crossmember and skidplate I have pictured below.
Attached Images
File Type: jpg 87K700r4NP241C-1.jpg (105.8 KB, 3 views)


__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-05-2017, 02:34 AM   #19
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
Oh, I did find a pic of the older style crossmember that uses the taller Tcase adapter. Notice how this crossmember dips down, therefore the Tcase adapter has to be taller. In this example, the Tcase adapter is built into the transmission tailhousing.

For Comparison purpose, I've included the pic with the W crossmember and the Wavey crossmember. This the only 3 crossmembers I know of used on 4x4s.
Attached Images
File Type: jpg A883 018b.jpg (101.5 KB, 39 views)


__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-05-2017, 03:02 AM   #20
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
I'm fairly certain that this skidplate is the one for the W crossmember which is the bottom one of the 2 in that picture.





__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-05-2017, 03:04 AM   #21
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
Then the skidplate that 1low posted goes to the older drop down crossmember.





__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-09-2017, 02:34 AM   #22
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
Are you getting this info Adam??? I've got some more pics that I took today after gathering 2 of my crossmembers and their skid plates.


__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-09-2017, 02:36 AM   #23
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
That wavey type crossmember used in the later model squares with short Transfer Case adapters. And it's skid plate.
Attached Images
File Type: jpg Crossmember4x4SkidPlate 003b.jpg (100.1 KB, 2 views)
File Type: jpg Crossmember4x4SkidPlate 006b.jpg (99.8 KB, 1 views)


__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-09-2017, 02:38 AM   #24
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
The drop down crossmember commonly found in manual transmission applications that have the taller transfer case adapter.
Attached Images
File Type: jpg Crossmember4x4SkidPlate 007b.jpg (97.8 KB, 1 views)
File Type: jpg Crossmember4x4SkidPlate 010b.jpg (100.7 KB, 1 views)


__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-09-2017, 02:40 AM   #25
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
And the underside of both of the above 2, Wavey and Drop Down Crossmembers with Skidplates installed.
Attached Images
File Type: jpg Crossmember4x4SkidPlate 014b.jpg (90.9 KB, 2 views)


__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-09-2017, 02:43 AM   #26
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
I no longer have a W crossmember in my possession, but I do have a W crossmember skidplate around somewhere. When I find it, I'll post a pic of it too so you know what it looks like.

Here is a pic of the W crossmember that uses the short Transfer Case adapter. I know it's used in the early to mid 80's trucks, not sure what years and models it's used in.
Attached Images
File Type: jpg 85K10Crossmember.jpg (6.6 KB, 23 views)


__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-10-2017, 10:38 PM   #27
 
bucket's Avatar
bucket
Super Moderator
 
Join Date: Aug 2010
Location: Usually not in Ohio
Name: Andy
Posts: 12,851

Year: '77, '79, '84, '88
Model: K5, K30, C10, K20 Burb
Engine: 350-454

Rep Power: 145

bucket has a reputation beyond reputebucket has a reputation beyond reputebucket has a reputation beyond reputebucket has a reputation beyond reputebucket has a reputation beyond reputebucket has a reputation beyond reputebucket has a reputation beyond reputebucket has a reputation beyond reputebucket has a reputation beyond reputebucket has a reputation beyond reputebucket has a reputation beyond repute
Mentioned: 122 Post(s)
Tagged: 2 Thread(s)
Default
Originally Posted by HotRodPC View Post
The drop down crossmember commonly found in manual transmission applications that have the taller transfer case adapter.
This one seems to be used for everything pre '85. The NP203 skid plate employed two of these crossmembers, with the second one just supporting the end of the skid plate and not the trans. The K30 version of this crossmember was a little more flat to accommodate the taller frame rails.


__________________


'77 K5
'79 K30
'84/'78 C10
'88 Suburban
+ a car or two

"Faster horses, younger women, older whisky, more money"
bucket is offline   Reply With Quote
Old 04-11-2017, 02:14 PM   #28
 
adamj's Avatar
adamj
Senior Member
 
Join Date: Apr 2015
Location: Colorado
Name: Terrence
Posts: 304

Year: 1987
Model: V20 Suburban
Engine: 5.7L TBI

Rep Power: 11

adamj will become famous soon enough
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Default
Thanks for the info HotRodPC!!
This is very helpful, now I feel comfortable next time I'm at the yard to find the skidplate I need. I have the wavey, not the W, and I've got an idea now from the picture what to look for in the skid plate, from post 25.


__________________
'87 V20 Burb Build
adamj is offline   Reply With Quote
Old 04-11-2017, 03:06 PM   #29
 
HotRodPC's Avatar
HotRodPC
Administrator
 
Join Date: Aug 2010
Location: Moore, OK
Name: HotRod
Posts: 37,891

Year: 85
Model: Silverado K10 to K20 Conversion
Engine: 6.2 to Gas???

Rep Power: 2

HotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond reputeHotRodPC has a reputation beyond repute
Mentioned: 202 Post(s)
Tagged: 6 Thread(s)
Send a message via Yahoo to HotRodPC
Default
Post up an ad here in the WANTED section, and I'd include will to trade too. The skipplates are nice to have but not necessary. But someone may be in the same boat as you and have the wrong skidplate.

I'd imagine you don't have a W crossmember laying around from another truck do you? I'd sure trade that crossmember for this Wavey Skidplate. My truck originally had the W crossmember, but I'm likely going to have to drill holes in the frame to use the Wavey Crossmember I have.


__________________
UNDER CONSTRUCTION


84 Chevy Silverado C20 454/Turbo 400 14FF 3.73 Peg Legger -- http://www.gmsquarebody.com/forum/showthread.php?t=286

85 Chevy Silverado K10 350/700R4/NP208 14FF/10B 4.10 w Lockers --http://www.gmsquarebody.com/forum/showthread.php?t=279
HotRodPC is offline   Reply With Quote
Old 04-12-2017, 08:13 PM   #30
 
Craig 85's Avatar
Craig 85
Senior Member
 
Join Date: Jan 2017
Location: Grass Valley, CA
Name: Craig
Age: 50
Posts: 135

Year: 1985
Model: K30 SRW
Engine: 454/TH-400/NP205

Rep Power: 4

Craig 85 will become famous soon enoughCraig 85 will become famous soon enough
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Default
My 85 K30 has the W crossmember with the skid plate in Post #20. I have a TH-400 w/NP-205.


__________________
Craig Hirsch
1985 Chevy K30 SRW 454
1979 GMC K15 SWB 3/4 ton axle swap - SOLD
2016 Ram 2500 Crew cab
Craig 85 is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Transfer case help!! Ypsik10 Tech Discussion 7 12-09-2016 09:17 PM
How low is your transfer case? firebane Suspension, Steering & Brakes 9 08-29-2015 11:18 PM
Transfer case 79scottsdale400 Transfer Case 13 03-27-2014 03:20 AM
Transfer case Id towjoe Transmission & Transfer Case 11 03-03-2014 12:43 AM
transfer case rtgs Transfer Case 5 03-08-2013 10:41 AM