Author Topic: Extended cab squarebody trucks  (Read 290 times)

Offline zieg85

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    • 73-87 GM squarebody extended cab and conversions up to 91 R/V series
Extended cab squarebody trucks
« on: January 13, 2021, 11:20:53 AM »
A little history behind these trucks as I understand it.  Dodge and Ford offered extended cabs in the 70's while GM didn't offer it until the 1988 and newer body style.  CVI was one company that offered this conversion as well as extended crew cabs.  The base conversion was a $6K option and went up based on paint and interior options.  CVI out sourced the fancier versions with plush interiors and special paint beyond stock.  There were other companies that offered this conversion as well.  Other rear windows were smaller or opted for none.  These conversions was authorized by GM and came with the full factory warranty.  The conversions were done to long bed trucks by taking 18 inches out of the front of the bed.  The floor was reused as the extended cab floor, the bed pieces was moved to the cab and it was filled in.  Most common found were 1/2 ton 2 wheel drive top of the line Silverado but I've seen Scottsdale and even my Custom Deluxe bare bones truck.  Production numbers have not been verified as the CVI doesn't exist.  I'd love to see as many as possible here.  Pictured is my 1985 C30, a CVI conversion to a Custom Deluxe base model radio delete truck
1985 C30 Custom Deluxe Ext. cab 5.7L TH400 3.21 
1985 C20 Scottsdale 7.4L 4 speed 3.21
1986 C10 under construction