Quote:
Originally Posted by itstock
So you want a lopey cam, and fuel injection? You need to make sure you are pairing the two items. Most of the aftermarket fuel injection systems are complete crap, and while you might get better mpg's, the reliability is hit or miss, more so with mismatched parts. I was interested in it. Now I'm not.
The C6 Z06 feels (should feel) like a dog compared to any windsor Cobra with a 500+hp engine. They are higher revving engines with not so much low end torque.
My 530+hp engine did 482rwhp on a dynocom (loaded) and 478rwhp on a mustang dyno (again, loaded). You have something seriously wrong with your engine, and more specifics need to be known, especially for RPM. Most of these engines max out in the mid-upper 5000's, NOWHERE near 7000.
I was getting bored with my car so I just put a 175rwhp nitrous shot on it. Interested in the car is back! Quite simply put, it's AWESOME. Before YOu do that, you really need to find out what is wrong with your engine.
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My comments about a LS7 where aimed at how docile they are being a FI 427. I'm not making a single move until I have more information but I'm saying I would want to know the options for going to fuel injection while keeping a Windsor setup. From the research I have gathered I would not want to go to one of the self tuning.....weekend warrior install wet manifold FI setups that seems to basically be a fuel injected carb. It seems like the stack injection or port injection setups are more expensive but potentially deliver the best results. My current rpm limit is 6500rpm but I've never shifted it about 6000rpm. My dyno results where showing max power output around 5800rpm. My comment about 7000rpm was that this is a street car and I'm not looking to turn those types of RPM nor want a motor that makes all its power up top. I'm not disputing something is up with the power output but Its yet to be found. I bet that nitrous is insane....its not my thing but it makes some nasty torque. Are you using a progressive system or are you hand cuffing yourself to the steering wheel and just praying?
*Timing-advanced it in between the dyno pulls until it was shown to lose power.
*Air filter removed on dyno- gained a whopping 4hp
*Exhaust setup is 2" headers through 2.5" Firefly stainless side pipes
*Brand new QF 750......when you go full throttle it was visually inspected and it opens all the way up
*Cranks, idles and runs fine and I would get in it and drive 500 miles tomorrow. As mentioned previously I need to get it on the local dyno jet and see what it makes. If it was right I would expect it to make about 450-460rwhp. If it made 360rwhp on a mustang and that dyno was accurate then I expect it to make about 390hp on the dynojet......so lies the magical 60hp that's missing. This isn't rocket science but the first places you look and the initial bases seem to have been covered.