High Sierra and Standard Height Differences

[Dragon]

Just out of curiosity, does anyone know what the difference in Height was between a '77 High Sierra model, and Standard Sierras/Chevy's of the time???  Been thinking about doing a 2.5"-3" Lift over my trucks current height, but since I have heard a few people say that a 2.5" lift is basically Stock Springs + an Add A Leaf(Which it almost looks like my truck already has), I want to make sure that I wouldn't be just replacing what I already have, or making it lower!   

Aside from the Tires(I think an Inch or two over stock), my truck seems like it is already taller than other "Stock" 4wd Chevy's/GMC's....

[Captkaos]

High Sierra has nothing to do with the suspension, it is a trim level - RPO Z62.  It is 1 level up from standard and 2 levels below top of the line for 75-81's ( 1 level below top of the line on 82-87(91).

[Dragon]

Thanks for the reply Capt, guessing the previous owner did put a lift on it at some point, but just never mentioned it to my Father-In-Law(From what I was told, it was an all Original Truck, but things don't add up here and there!)....

[Captkaos]

Being a 1977 K series I wouldn't doubt it.  What size tires are on it?

[Dragon]

I'll get back to you later on the size Capt, I got to be heading to work shortly, so I will check it out when I get home....

[Dragon]

BFG M/T 255-85-R16 is what it currently has, don't know how that converts to the Early Size Ratings that were in use when the truck was new....

[Captkaos]

those are roughly 32" tall.  The biggest ever from the factory were 31's.

[Dragon]

I was coming up with around 33.067/33.1 average for what I currently have, and guessing roughly 30/32 for the Factory Size...  My truck still seems like it is an 1/2 to 1" or more, on top of the tire size difference from stock, atleast in comparison t other "Stock Height" trucks I have seen...

A few Tire Height Calculators:
http://www.net-comber.com/tirecalc.html
http://www.1010tires.com/TireSizeCalculator.asp