The highest heat is at the back of the firewall making fender vents my choice....if I had heat issues.
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In my experience the hood risers work well at trail and city speeds <30mph. Pulling fresh air from a snorkel will always help at any speed.
In my opinion the risers and louvers will not net the same results. The issue I see with your theory and antecdote is that the rear of the hood becomes a high pressure area at highway speeds; whereas the middle of the hood where louvers are placed is not.
Interesting. I ordered the hood risers to try but this may be a good solution. Do you have any recommendation on vents/source? Trying to get the heat out from the turbo and allow better air flow for cooling and A/C to work better at low speeds...The highest heat is at the back of the firewall making fender vents my choice....if I had heat issues.
Interesting. I ordered the hood risers to try but this may be a good solution. Do you have any recommendation on vents/source? Trying to get the heat out from the turbo and allow better air flow for cooling and A/C to work better at low speeds...
Does your truck have the rubber skirting between the frame rails and the inner fenders?I've got an LS swapped rig and have been steadily working out some of the kinks, coolant temp being one of them. Low speed and idling is great. These engines tend to be happy at 195 - 205. I've got dual electric fans and a powered AT cooler all moving air through the radiator. However, at sustained highway speed I see temps creep up to 215, sometimes higher. Never has spewed. My theory is I'm building up high pressure under the hood decreasing airflow over the radiator. Years ago I had a modified Datsun S30 Z car and they suffered from the same thing. It wasn't uncommon to see some creative ducting and venting going on.
Have been talking to my builder about raising the rear of the hood to test my theory - figure that's a much better way than cutting holes in the hood. The hood risers are a perfect solution. Just ordered a set and hope to have some positive results to report soon.
I have an LS swapped 6.0 80 as well in Phoenix AZ.I've got an LS swapped rig and have been steadily working out some of the kinks, coolant temp being one of them. Low speed and idling is great. These engines tend to be happy at 195 - 205. I've got dual electric fans and a powered AT cooler all moving air through the radiator. However, at sustained highway speed I see temps creep up to 215, sometimes higher. Never has spewed. My theory is I'm building up high pressure under the hood decreasing airflow over the radiator. Years ago I had a modified Datsun S30 Z car and they suffered from the same thing. It wasn't uncommon to see some creative ducting and venting going on.
Have been talking to my builder about raising the rear of the hood to test my theory - figure that's a much better way than cutting holes in the hood. The hood risers are a perfect solution. Just ordered a set and hope to have some positive results to report soon.