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atomp3

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  1. I used a generic LS2 starter off of ebay like this one: http://www.ebay.com/itm/New-LS1-LS2-LS3-LS6-LQ4-LQ9-Starter-Camaro-Corvette-/300857740287 Clearance is tight, I used a cut-off wheel to trim the positive terminal down on two different installations. Obviously, an LS1 (f-body type) style starter will not fit, the housing body is about 3/4+ inch longer than the LS2 style. To remove/replace the starter, you need to unbolt the header and drop it down some so you can angle it out of the way. If you have the starter bolted up before you installed the header, you will have to remove it to install the header. They go up together. As-in: First, you slide the header up at an angle, then, squeeze the starter in there between the header and the engine, bolt the starter up, then, raise the header the rest of the way to where it belongs and bolt the header up.
  2. Hey everyone, thought I'd share a quick write up on my header install... Two weeks ago I spent the weekend in my buddies shop installing my headers. It ended up taking me 14 hours with a lift. Here are some of the issues I came across: First off, I would recommend taking out all the plugs(I took out six, seemed like plenty of room, but still ended up cracking one) Also, taking the alternator out was not optional for me, since it was interfering with the removal of the engine mount bolt. The proportioning valve had to be relocated for clearance, I could not get the pipes on with it in the stock location. Not only did I have to cut some threads off of the drivers side TC arm, I had to cut off ALL the threads, not enough, then I ground a bit off the nut, not enough, and then I ended up having to ball peen one of the head pipes to get enough clearance to mount the headers. Unfortunately, after about five in and outs with the drivers side, I still need to get them out one more time, as they are occasionally rattling on the nut down there. The drivers side was the tough one. On the passenger side, I had to grind back the upper rear corner of the passenger side motor mount to clear the head pipes there. After taking a slightly uncomfortable amount of metal off the TC mount, I still had to dent one of the pipes a little bit in that area too. I also had to cut a chunk off the rear TC washer on the passenger side. For the two drivers side inside sparkplug boots, I orderd the MSD bits, but ended up just cutting about 3/4" off the back of the stock boots/shields then sealing with silicone, seems to work fine for now. As for the no-show on the gaskets, I just reused the stock MLS gaskets, no problem. One, yeah, one last thing. Chase the threads in the o2 bungs before you put the headers in. I got everything in and sorted, and I went to put in the O2 sensors as the last piece of the puzzle, only to find that both sides threads would not let me get the sensors in. I had to either pull everything back out or chase the threads with the headers in, which I somehow managed to do, but that was not an enjoyable way to finish this job. Hopefully you all have a little more room to work with, I'm not sure if my engine is maybe a little higher than others(bought the car with the LS1 in it), or maybe these cars are each just that much different(probably). Mine's a 77 280Z. After sorting out the headers I took the car over to an exhaust shop and had them flange in a a 2.5 y section, followed by a 3" single exhaust with a cat and basic turbo type muffler. When I got home, I nearly high centered my Z entering the garage, it took three trips total to the exhaust shop to get it sorted, but it finally turned out really nice with no ground clearance issues. The old exhaust was 1.5" shorty headers, 2.5 y, 2.5 single, 2.5 cat, into a 2.5 magnaflow. This whole process has turned out to be a bigger effort then I was hoping for, but worth it in the end. I did not do a before after dyno, but I did take it to Bandimere Speedway before and after. My best run before was 13.145@107.46mph at a DA of 9238 feet. My best run after was 13.031@110.42mph at a DA of 8231 feet. (please don't rag on my ET's, I'm running 225 street tires, 5800 feet above sea level:) The car now weighs in at 2630 without driver, 1/4 tank of gas. The headers and exhaust added about 10 pounds. There is an old drag racers rule of thumb that states: for a 3000+/-lb car, every 10 hp gain will net you 1 mph in the 1/4 mile. So... Although not a controlled environment experiment, the trap speeds suggest a before/after gain of around 30HP from the headers and 3" exhaust, no change in tune. Correct that for the change in Density Altitude, and I would guess that I gained a solid 20HP. I'm pleased with the results. The headers look great(especially compared to the rusty 1-1/2" that were in there) and the exhaust sounds great too. Good Luck edit: forgot to mention, the engine is a stock 2001 camaro ls1. The ecu has a sticker from fuel injection specialties in 2005, I don't know what they did to it.
  3. If you get a chance, could you post the before after dyno graphs? I'm curious to see the difference in low-mid range
  4. What will the modest price increase be for lurkers and indecisives? Also, what will the modest price increase be for cool people like me? TIA
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