Hey everyone, I have a long bed extended cab 90 lo5 5.7 4x4 gmt400. I got this truck from a family member with a bad piston, recently rebuild the 5.7 and been using it for a shop truck. It has the 700r4 transmission in it as well. My question is what is the towing power of the lo5 5.7?
Reason I ask is, I recently went on a 5 1/2 hour drive picking up a motor/transmission. The gmt without the drivetrain in the bed was cruising low rpms around 75-80 easy, but with the load it was a struggle getting it to cruise comfortable at anything above 75mph rpm wise. I have a dual axle flat bed I tow a 2800lb car with. I am wanting to use the gmt as a go-to tow truck for this trailer instead of the cummins I am trying to sale. Is the lo5/700r4 up to that, or should I be thinking about finding a lq9/4l80 combo before I try to tow that kind of weight with the gmt? The trailer will need towing as much as 5 hour tow periods. Love the truck though, it's def grown on me after working on it. First post, so hopefully I didn't break any forum rules and posted in the right spot.
Reason I ask is, I recently went on a 5 1/2 hour drive picking up a motor/transmission. The gmt without the drivetrain in the bed was cruising low rpms around 75-80 easy, but with the load it was a struggle getting it to cruise comfortable at anything above 75mph rpm wise. I have a dual axle flat bed I tow a 2800lb car with. I am wanting to use the gmt as a go-to tow truck for this trailer instead of the cummins I am trying to sale. Is the lo5/700r4 up to that, or should I be thinking about finding a lq9/4l80 combo before I try to tow that kind of weight with the gmt? The trailer will need towing as much as 5 hour tow periods. Love the truck though, it's def grown on me after working on it. First post, so hopefully I didn't break any forum rules and posted in the right spot.