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Home » Public Forums » GMCnet » GMC killers- Steep-Long Grades
GMC killers- Steep-Long Grades [message #94435] Tue, 03 August 2010 09:12 Go to previous message
gbarrow2 is currently offline  gbarrow2   United States
Messages: 765
Registered: February 2004
Location: Lake Almanor, Ca./ Red Bl...
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Senior Member
Any one have a source for info about Hi-way grades?

I have read many posts from people complaining about the Grapevine on I-5 in So. Cal. I have driven that hill dozens of times in the last 40 years; Driven it numerous times in 4 different GMC's in the past 8 years.
The highway sign says that the first lift up from Castiac is 6 miles at 6%.

I would like to compare that to the following hills that I've taken GMC's over.

Ca-58 Bakersfield to Tehachapi

Mex-1 north west of Santa Rosalia, Baja Ca.

Tex-170 between Presidio and Latijas. "The Big Hill" in Big Bend State Park. Where we had a near death experience when the GMC engine quit.

US-95 North out of Lewiston, Idaho. This one seems the steepest and longest. Pulled it in Wayne's coach (Royale 403/3.70 last Friday- 2nd gear 25 to 30mph. No problem. Just slow and go. Beautiful view of the Clearwater/Snake River Vallys from the top.

Any info on grades and or your hill stories will be appreciated.


Gene Barrow
Lake Almanor, Ca.
1976 Palm Beach
 
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