Quote:
Originally Posted by Can'tHave2MuchHP
For one, he's running upper and lower pulleys, he's spinning the blower a lot harder than you are. He's only able to do that because of the meth injection, he had heavy spark knock before that. I believe he's got a 15% lower and a 2.31" upper which is a lot more overdrive than a 15% or 18% which is what you likely have?
All that said, 720 (Former numbers) to 740 RWHP is crazy for bolt ons...Never heard of that before and I've seen and read about hundreds of built LT4 engines. Usually you have to have a cam to get over 670ish RWHP. Don't be upset with your numbers, but I would recommend you grab a dual nozzle meth kit for your build if you want some more power.
I would agree with Ktt, his car is being pushed to the max (Supercharger RPM wise) and likely Matt tuned her pretty aggressively as well.
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I think I'm 18 lower, shoot, maybe 15. I'd have to go check again. haha. but I'm with you. I've admitted esp from Matt that we are spinning it pretty good, but the Meth compensates I guess. We are running the dual nozzle set up. As of now, I'm tapped out and won't push it any further. As mentioned, Whipple is next. And yes, I was having crazy top end knock issues so. Once I hit around the 130 mph mark, it was choking.
Matt did back it down. He said he could of gotten me about 20 more, but we started having fuel issues. So, I feel comfy with what I have now. I still can't believe my numbers are that high compared to other cars. And to think, if this was done on LMR's Dyno Jet, it would prob show around 800 hp. Everyone knows Matt's dyno is a #'s killer. But, true #'s. Eh, it is what it is. I'm just enjoying it until I go more.
I've honestly had it in the shop longer than I've actually driven it so. I'm going to put a few thousand miles on it, then start my next hp bump.