Quote:
Originally Posted by Drsagacity
Are you talking about stock boost levels on a zl1 or an SS? The motors have different compression ratios. What happens when you run the same pulley on the higher compression motor? When you take the stock zl1 pulley and put it on an SS for instance.
It looks like the Lt4 blown cars, zl1’s, Trap slower and run slower times, in general. There aren’t any lt4 blown cars on the LT1 fast list, so I can’t judge what’s happening. I would defer to someone who has tracked their LT4 blown LT1 to let them tell the story. However, I was agreeing with you, you can definitely get an LT4 blower cheaper, but there are clear downsides. That’s why people take the LT4 blower off their cars.
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Quote:
Originally Posted by Drsagacity
Yep. I am talking about overheating the car. I don’t believe I ever said that. If you are interested in a dyno number that means nothing that is one thing. If you are interested in the performance of a 600whp car, that is another. Take the 600whp car with the LT4 blower and go run the quarter mile. You will not achieve the same performance as another 600whp car with a different option because IaT’s Will be higher with the LT4 blower. On paper, the LT4 blower will show a similar torque curve, similar boost, and similar power numbers. Almost identical when you only pull in 5th gear for 5 seconds. I am also saying that is deceptive.
I am not saying the car will overheat. By heat problems, I am suggesting the LT4 blower will result in increased IaTs that will not allow for performance you would expect from a 600whp car. If you are only interested in a dyno number for bragging rights and you are never going to expect performance to match that number, then the cheapest way to get there is the LT4 blower. Sorry, I am not saying anything controversial here. Just pointing out that spinning a blower harder creates more heat and results in higher iat’s. The guys on this forum who have posted good dyno results with the LT4 blower have generally been running close to 10psi on the LT1. You will see on many of the threads when they post the results, I have specifically asked what boost level they were seeing.
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Actually the SS runs cooler because you can under drive the LT4 blower and make the same power as a ZL1 due to the increased compression of the LT1. Boost creates far more heat then compression. ADM made 600whp with only 6psi using E85. Then ADM made 680whp with E85 on a completely stock 1LE SS at the factory LT4's 9psi using the LT4 injectors and LPE big bore. Its actually a very effective blower for setups under 10psi. The reason why ZL1 cars remove them is simply because they have a engine capable of 1k hp out of the gate and the 1.7 blower is tapped out long before then.
FYI, There was a guy on Facebook running 10.50's @ 135 with a LT4 setup on a SS. Many 6gen owners do not post on this forum.
The Maggie definitely is the way to go if you plan on making more power down the road...can't argue that at all.