Jul-07-2018 04:30 PM
Pennsylvania Air National Guard
:CJul-13-2018 05:56 PM
LIKE2BUILD wrote:jkilroy wrote:
I’m towing a 7500 lb. Cougar 28SGS. The truck I have is a 03 Silverado 2500 HD 6.0 with 4.10 rear.
One more thing on this engine. When towing hard like you're doing, you will eventually snap exhaust manifold bolts. Usually it's not if, but when this finally happens. I don't know the reason why, but it's very common on the 5.3L and 6.0L engines when used for towing.
Most often it's the bolts on the front and rear cylinders on either side. It happened to mine and I decided to just let a shop do the work. I also bought stainless shorty headers to get a little better exhaust flow. The shop charged $350 to remove the old manifolds, extract the broken bolts, and install the new headers. This did not give me a boost in HP, but I did find the engine revved a little quicker. With the headers when I gave it throttle climbing a hill it seemed to jump into that 3500RPM and higher range a little earlier than with the manifolds which translated to a slightly easier climb.
KJ
Pennsylvania Air National Guard
:CJul-12-2018 12:06 PM
Jul-12-2018 12:03 PM
jkilroy wrote:
I’m towing a 7500 lb. Cougar 28SGS. The truck I have is a 03 Silverado 2500 HD 6.0 with 4.10 rear.
Jul-12-2018 11:52 AM
Curly2001 wrote:
Let it run at 4,000 or above on the hills. It does it's best at higher RPM's than lugging it slower. Have had mine at 4,500 rpm going up some longer passes towards Flagstaff. It is made to do it's best at higher rpm.
Curly
Jul-12-2018 11:46 AM
jkilroy wrote:
What’s the cooling stack?
And anyone know if you have to change the water pump with the clutch fan?
Jul-11-2018 09:28 AM
Pennsylvania Air National Guard
:CJul-11-2018 08:10 AM
Jul-10-2018 07:05 PM
Pure Diesel wrote:
Check the cooling stack. Has it ever been cleaned out? Over time, miles, location, debris and bugs can block the air flow going through.
Pennsylvania Air National Guard
:CJul-10-2018 04:43 PM
Jul-10-2018 04:29 PM
Pennsylvania Air National Guard
:CJul-10-2018 09:19 AM
Jul-09-2018 08:06 PM
Jul-09-2018 02:13 PM
Pennsylvania Air National Guard
:CJul-09-2018 02:09 PM
Pennsylvania Air National Guard
:C