- Thread starter
- #4,821
205 isn't bad, but rises fast when towing and at elevation. I want that extra cushion. 205 is perfect for my SBC 350, but seems high with Big Red when I used to cruise at highway speeds at 190*
Builds Big Red Toy (6 Viewers)
- Thread starter The Phoenician
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
Have you played with the fuel screw? Turn it down a smidge to see how she does.
- Thread starter
- #4,823
I have not. I like the way it responds and how quickly it boosts. I'm leery about messing up the settings, it's a beast now, just need to lower the temp a bit. I might try the engine oil cooler first to see if that gets me to where I want to be. Of course, I'm headed out of town, so it might be a few weeks before I can get back to this.
Jason Andrews
Modaholic
My compound 4bt runs like 190ish but gets upto 205-210 over CO mtn passes. Remind me, do you have turbo blankets on both of them and have the downpipe wrapped? That reduced quite a bit a radiant heat that soaks the entire engine bay once under higher loads. And what fan setup do you have on it?
- Thread starter
- #4,825
Yup, both turbos have blankets and the downpipe is wrapped. I have two electric fans, one puller and one pusher that move a ton of air. I like the fueling settings right now cause I can get to 60psi if I need it. So hoping this engine oil cooler can just drop it ten degrees.
When I was in Colorado I was hitting 230 fast, but I was pulling a trailer and I'm regeared to 3.73s.
Mine runs 180-190 on flat ground in the summer but gets up around 210 on grades. Maybe 215-220 on steep grades with the 42s installed.
- Thread starter
- #4,827
What's the highest safe sustained temp you guys are comfortable running?
Hard to say. I'd be uneasy if it was much above 200* for an extended period.
- Thread starter
- #4,829
What gears are you running to turn 42s?
Jason Andrews
Modaholic
4.88's with my 42's. It's definitely plenty of gear.
I also did a 6BT oil cooler on mine.
- Thread starter
- #4,831
I thought about the 6BT oil cooler. But I didn't want to tax the radiator and coolant more. Do you feel like it improved your temps?
Jason Andrews
Modaholic
I had it done with a full rebuild of my engine last year so can't really comment.
Long story, but I only put like 40k on it since I bought it "rebuilt" in 2008 before installing, but had dip**** mechanics work on it who used way too much ether/starting fluid and I suspected I had internal damage so i had it torn apart. It has different pistons now.
