super_kev

iTrader: (5)

I'm curious what temps a stock 4th gen runs under the hood? I have been driving my LS1 3rd gen the past few days (kept the cats) and it seems as though it gets fairly hot. The front brake lines near the manifolds are around 140-150, the fuel lines around 120 or so (where the exhaust/cat is, at the beginning of the trans tunnel) and the firewall near the manifold/cat junction is about 120-130. How do you guys combat underhood/trans tunnel heat?

bczee

iTrader: (12)

What temp is the engine running ? It might seem hot, but as you indicated, they are all near the exhaust manifold/pipes which can generate a lot of heat.

You can use some of the heat insulator to wrap the lines or shield it. It comes in many different configuration, from wraps and sheets. I used the sheet to protec my A/C Heater box which is about 1-2" away from my passenger manifold and have wrap a few of the electrical wires to protech them from the heat.

super_kev

iTrader: (5)

Fan 1 is set to 195/185, Fan 2 is set to 205/195. I might kick them down to 190/180, 200/190, but we'll see. It hasn't go on the high stage yet, so I'm guessing it sits around 190-195. I wrapped the wiring in back with aluminum tape, and I might try and create a heat shield for the fuel/brake lines in the trans tunnel. I just checked a stock 3rd gen, and found out that the brake lines are 150-160, and the firewall is around 140-150, so I'm in the ballpark I guess. I just wish 3rd gens had a slightly bigger engine bay with more airflow.

a10beav

My Firehawk runs around 180 with the fans on, this is exaclty what I'm getting with my '88 conversion too. I have header wrap around the fuel line, since it's about 1/4 inch from the header.