Originally Posted by bwaysteve
So basically I could go with the 1500
rather than the 2500 with the 454 and still be good?
I just don't want to be slapped all over the highway in a truck too light.I could go either way at this point but looking for best options between milage and stability.
Your intended use can make a huge difference in your satisfaction level with the less powerful C/K 1500
5.7 Liter compared to a C/K 2500 7.4 Liter Suburban. I traded my 1995 K 1500 Chevrolet Z71 with 5.7 Liter on my K 2500 Suburban in April 1998 (1999 model year Suburban). The 5.7 liter was grossly underpowered for my travels in the Rocky Mountains with my '64 Overlander (4,440 pounds dry/5,900 pounds loaded for vacation), and was my sole reason for trading the K1500 truck in 1998 as it only had 48,000 miles.
The 1999 K2500 Suburban is still in my garage and serves as my primary long-distance tow vehicle with 199,990 miles on the odometer. The transmission is original and has received only regular transmission service at 30,000 miles intervals. The motor has required only a timing gear and chain set at 180,000 +/- miles, and oil pan and main bearing seals at 185,000 +/-miles. The only issue I have with my K2500 Suburban is its electronic transfer case - - the circuit board that controls all operations of the transfer case tends to fail every 15,000 miles and at $750 for the part and the labor to install it has made the four-wheel-drive an expensive option that I will not purchase on my next tow vehicle - - a locking rear differential is just as effective but less costly to maintain. Currently, I am waiting for my mechanic to make a cost comparison to complete the transfer case repair again compared to the cost of converting back to 2WD.
Good luck with your investigation!
P.S.: The Suburban actually averages close to 2 MPG better when towing than the less powerful K1500 did, and solo the difference is only readily apparent in town (the Suburban looses 3 MPG to the 5.7 Liter 1500).
-- K1500 -- solo 18 MPG Highway -- 9 MPG Towing -- 3.73 differential gearing
-- K2500 -- solo 17 MPG Highway -- 12 MPG Towing -- 4.10 differential gearing