I have a 1985 Suburban that my parents bought from a family friend. It is a 350 gas engine and has a tag in the window that reads "GM-FACTORY SPECIAL VEHICLE." I rebuilt the 350 and used gapless rings, a UD camshaft with .450"/.462" - 207°/211° - 110° LSA specifications, ported polished 305 HO heads with a 6 angle valve job. It is a premium fuel only motor with 9.50:1 compression, but with the 700-4R transmission and 3.42:1 axle, it gets 18-19 mpg on trips using cruise control.

Bottom line is, my folks also have a 1985 Sub with a 6.2 Litre engine. It runs and pulls very well. Keep in mind the 6.2's and 6.5's do have their share of problems as with any vehicle of that vintage....Robert

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Did you just pass my 740 at 200 kmh in a 300SD?????

1978 300SD 'Phil' - 1,315,853 Miles And Counting - 1, 317,885 as of 12/27/2012 - 1,333,000 as of 05/10/2013, 1,337,850 as of July 15, 2013, 1,339,000 as of August 13, 2013



100,000 miles since June 2005 Overhaul - Sold January 25th, 2014 After 1,344,246 Miles & 20 Years of Ownership