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Old 09-28-2022, 08:05 PM   #3
kipps
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Join Date: Jul 2014
Location: North-central Virginia
Posts: 1,099
Re: c10 vs c30 gas tank differences

I assume you're referring to a tank in the blazer/burb position; between the frame rails, behind the rear axle.

If so, the one-ton trucks mounted the rear shock absorbers inboard of the frame. Any in-frame tank will need some additional fabrication to clear those shocks.

The 1/2-ton trucks, 3/4-ton trucks, blazers, and suburbans all mounted the rear shock absorbers outboard of the frame, so there was no possible conflict between a in-frame fuel tank and the shocks.
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1987 C6P V20 truck, 2010 LMG 5.3, AFM delete, 2010 Camaro exhaust manifolds, 1997 nv4500, 1991 np241c, hydroboost, 2005 14bff axle & driveshaft, drop-n-lock gooseneck, 4.10 gears, stock suspension, rims, and tires. Still a work in progress. Any questions or suggestions are welcome!
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