Quote:
Originally Posted by Ace23
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.
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What heads and intake do you have? We could quickly rule out power numbers depending on them. Is it definitely a DART block? Not that it has to be, but if it's not a dart block we can rethink everything you were told about the engine also. Any pictures of the engine bay? What clutch is in the car? Any noticeable smells?