Quote:
Originally Posted by CW3SF
He’s an SS also, not a ZL1. That’s the first thing
I look for before taking anyone’s advice here for gospel. And don’t get me wrong, I’m not saying he doesn’t have valid info to add, just that when discussing causes and effects on ZL1s with LT4 I always make sure I’m getting info to that spec.
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Point taken regarding comparing data between LT4 & LT1, however, for this particular situation, my being a stock compression, boosted LT1 would only exacerbate the cat overheating issue. I really believe you 800 and under whp LT4 guys would be fine on e60. On the back straight at Road Atlanta, I'm at the top of 4th gear at ~140mph / 6500+ rpm, lap after lap with no issues so far. I'm pulling the exhaust to add a magnaflow X-muffler next week. I'll take another look at the cats and serve up a big Ole slice of humble pie if they're showing any signs of pending failure. I've had the exhaust off multiple times, for various reasons, and they always look fine...it has been awhile since I last looked, I will admit.
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Baby Blue
2016 Hyper Blue 2SS/6m/MRC/NPP/Silver Rally stripes/ZL1 wheels & brakes/GForce DS and axles/ZLE Cradle Bushings/FE4 ARB front & rear/SEMA Grill/Rotofab dry/95mm TB/Magnuson 2300/Full LT4 fuel system/JMS boost-a-pump/E85 Sensor/Ported CID heads from LME/Cammotion PD cam/Thompson Motorsports forged shortblock/catted Kooks 1 7/8 headers /JRE remote tuned