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Post by genone on Apr 21, 2012 0:13:42 GMT -6
Also, the fact that the engine was altered to be in a car with a manual transmission doesn't make it a Shelby. Many of these engines were used as swaps in other vehicles. You might have got one that was to be installed in something like a street rod or Fiero but the project fell through.
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Post by shelbyracing on Apr 21, 2012 0:52:56 GMT -6
It was shipped from Las Vegas and that is where the assembly plant is. My dual exhaust just got finished and I've been trying to do more research on an x pipe to see if it will work properly when my tubes are different lengths from manifolds. I haven't heard of anyone else trying it and I can not find a decent 2". Just look at the x pipe thread I started, I am trying to get input from a few of the great mechanics in this forum. There is a nice 2.25" but that might pose a problem changing pipe size.
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Post by shelbyracing on Apr 21, 2012 1:17:52 GMT -6
Oh and I did before I was very sure about the tires @ 70.mph according to GPS, my car speedo reads 69. I too thought it was going to be 5 mph off but different companies actually vary quite a lot on true tire measurements. My 35's on my truck measure 33 off the truck inflated. There was confusion on my time because I had it brake torqued. I'm sure you can count in the video, count frames if you want. I will even measure the triple tread in comparison to the cooper if you really feel it's necessary. At 60 it is off by 1 mph. I checked with my tom tom and my phone (htc inspire). I just analyzed the video very intently speedo's first movement is at 5.51 then when it hit's about 1-2 mph over the 60 mark it is 12.26. That is 6.75 I believe that is a good improvement. My car shifts @ 40 mph because autobahn.
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Post by shelbyracing on Apr 21, 2012 1:19:46 GMT -6
Are you saying that you can tune a Northstar Computer??
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Post by shelbyracing on Apr 21, 2012 1:25:42 GMT -6
I was over-looking an important aspect of a car taching out faster due to power band. And that is computer response. Watch your timing advancement delay upon hitting wot it isn't very fast.
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Post by genone on Apr 21, 2012 6:42:50 GMT -6
Are you saying that you can tune a Northstar Computer?? I can tune anything that can use an SCT tuner. As for the WOT delay, if you watch the last tach out I do you'll see it is indeed quicker than the first . Reason being I, just as you did, blipped the throttle right before WOT. Doing that causes a light surge in fuel pressure and helps the engine catch its breath a little quicker. By the way, one thing that might be causing your long starts when the motor is warm is the CTS and/or ACTS. If they start giving screwy readings the computer doesn't know how much fuel to add and can saturate/starve the engine. The ACTS is about 10 bucks and 2 minutes to replace. The CTS, on the other hand, is a total PITA but isn't expensive either. |
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Post by genone on Apr 21, 2012 6:50:57 GMT -6
I was over-looking an important aspect of a car taching out faster due to power band. And that is computer response. Watch your timing advancement delay upon hitting wot it isn't very fast. Timing advance is directly related to engine vacuum(MAP reading) @ throttle input(TPS reading). The way it should work is the vin 9 cam will delay the the computer's response to advance the timing due to the longer wind up of the higher lift cam. Once the cam reaches its power band it will then increase the speed that the engine revs. Easy way to think about it is bigger cam = slower rev at low end and faster rev at top end. |
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Post by Aurora40 on Apr 21, 2012 7:00:38 GMT -6
On top of that, Triple Treads don't put power to the ground. That's for sure. They are great tires in rain and snow, but they are nothing like a performance tire in straight-line or cornering grip. They are decent if you are used to economy tires, and I like them a lot for what they are. But if you think they really put it down, I'd suggest you've never experienced performance tires. |
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Post by Aurora40 on Apr 21, 2012 7:08:12 GMT -6
My car does 0-60 in 6.4-6.7, the peak power is @ 6,500 and I shift @ 6,100. What is any of that based on?? How do you know where your peak power is if you've never dyno'd the car? How did you determine the 0-60mph time? The type of equipment magazines use to determine this is in the hundreds to thousands of dollar range, and you've said you won't pay $50 for a dyno run. So it seems unlikely you've shelled out for timing equipment. I suspect this is the problem genome is having, and it certainly is the one I have, with your posts. You take some opinion, conjecture, or wish, and post it as if it were fact. |
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Post by Aurora40 on Apr 21, 2012 7:23:41 GMT -6
And displacing oxygen with exhaust gases means the computer will add less fuel...hhhhmmm. if it is adding less fuel because there is less oxygen I wonder what will happen to fuel economy? Egr is to reduce nox by lowering exhaust temp because there is......less fuel.... Which creates less heat. That logic is pretty obviously flawed. Just try extending it. If I covered my air intake with a garbage bag, hardly any oxygen at all would get in. Would that result in stellar fuel economy? With electronic throttle cars, why does EGR still exist? They could just close the throttle to reduce NOX and increase fuel economy. Really any car with fuel injection could just inject less fuel all the time to save economy and reduce NOX. When EGR is engaged, you still need to make the same amount of power to keep cruising at the same speed. To do that requires the same amount of oxygen and fuel. When EGR engages you don't surge faster, causing you to close down the throttle. The throttle stays the same, the same airflow through it is happening. But there is additional inert "air" being added, increasing the mass/density of the intake charge but without increasing the oxygen content. This means that when the same amount of oxygen burns, it has to heat up more than the same amount of inert/other gasses. So the overall temperature of the now-burnt intake charge is reduced. Same amount of oxygen, same amount of fuel, more stuff to heat up = lower final temperature. |
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Post by shelbyracing on Apr 21, 2012 9:04:20 GMT -6
What I was meaning is less combustion gases in comparison to having the same volume of air. I didn't fully explain myself I guess.
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Post by genone on Apr 21, 2012 9:14:57 GMT -6
By the way, no SCT does not support the Northstar so I can't tune it with Advantage III. An LS1 PCM shouldn't be that hard to adapt, and I'd bet with a little work a Ford 4.6 DOHC(99+ Cobra) PCM could be made to work. The LS1 PCM should be able to control the 4T80E. I've done that swap on LT1s and TBI motors. Might could get it to work with the L47.
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Post by shelbyracing on Apr 21, 2012 9:29:54 GMT -6
Time & money... That is why my car isn't finished yet..
So where would you put the x pipe, and would it hurt to run 2.25". I'm fine with taking opinions and such but you went on the attack.
The triple treads are the best handling tire I've had on a car so far. Before the Aurora I was more a truck man, 11" lift and such..
Also video is the best timing tool I have, at 30 or whatever fps my phone is, it has to be fairly close.
I really want to get as much power as I can from this motor, just because. I said I wasn't worried about drag racing when i was building the car because that isn't the purpose I was building it for. I want top end power. I don't know where this cars powerband is only what the Shelby's was.
I do plan on getting it dyno'd, I really wanted it finished first though.
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Post by genone on Apr 21, 2012 11:05:48 GMT -6
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Post by aba1987 on Apr 22, 2012 21:13:23 GMT -6
Uh oh Dan. Poor Cutlas lol
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Post by nelson480 on Apr 22, 2012 23:11:31 GMT -6
Poor cutlass! At least at wasnt a coupe or a vert, then i really woulda cared lol
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Post by genone on Apr 23, 2012 0:05:17 GMT -6
No but it was a '97, the Cutlass Supreme that was never supposed to exist. And there actually wasn't anything wrong with it, I just didn't like it and had a few liquid refreshments in me and figured my Bronco would be able to do it. After that, the car still ran and drove just fine. The headlights weren't exactly lined up though. I sold it for $150 about 2 years after this and the guy drove it away. That car was my paintball target, my railroad tracks jumper, my dirt bike ramps and everything in between. I bought it in Houston, drove it for about 5 years(towed behind the primered truck I pictured from Houston to Atlanta) and sold for what I had in it. I paid 100 bucks for it, replaced a head gasket and all the struts(bought em used) and that was it. This is how it rolled over to 200k miles:  How it looked before I ran over it:  Some paintball fun:  |
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Post by shelbyracing on Apr 23, 2012 8:34:51 GMT -6
I always wanted to do that in my truck. 93 F150 11" lift, 300 straight 6, I rebuilt E4OD, and welded the spider gears. It's a mountain mover ;D
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Post by genone on Apr 23, 2012 9:38:13 GMT -6
I had an '89 with the 300 inline. In my opinion(which doesn't count for much, I know) it was the best truck motor Ford has ever given us. Reliable as the moon, great low end and not too horrible mid range. No top end, but it doesn't need it. Mine was a 5 speed 2wd, just a beater truck although the exterior was pristine. Only damage was what I did to the bed from many trips hauling split wood for the fireplace. I always like to keep at least one old school, simple work truck around the house. That Ford was sold because I wanted an automatic for towing a boat. I got this, which was the best truck I've ever owned and I've owned some good ones. 300k. Only thing it ever needed were 3 transmissions and 3 radiators but I was doing SERIOUS towing on a daily basis so I expected it. At 300k I changed the oil every 3k miles, never an ounce low. 5 quarts went in, 5 came out. Never leaked a drop and never had the valve covers off.  |
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Post by shelbyracing on Apr 23, 2012 14:39:52 GMT -6
Mine is on YouTube I've beat the body up, a lot  but it has 230k and countless hours of extreme hill climbing/ farm work. The 2wd 5 speeds had too high gearing. My grandma had one geared 2.89? Or something, mine is 3.55 but should be 4.76 really. I'm amazed with those gears the torque it has. Everybody uses V8 offroad and drink gas I can idle my truck everywhere.. I have a electric fan on switch (an Aurora fan) and an upgraded alternator (Aurora also lol) to handle the load. I wired an olds plug and made a bracket to mount it. |
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Post by dynamic1964 on Apr 24, 2012 14:31:37 GMT -6
Poor cutlass! At least at wasnt a coupe or a vert, then i really woulda cared lol X2 |
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but it has 230k and countless hours of extreme hill climbing/ farm work. The 2wd 5 speeds had too high gearing. My grandma had one geared 2.89? Or something, mine is 3.55 but should be 4.76 really. I'm amazed with those gears the torque it has. Everybody uses V8 offroad and drink gas I can idle my truck everywhere.. I have a electric fan on switch (an Aurora fan) and an upgraded alternator (Aurora also lol) to handle the load. I wired an olds plug and made a bracket to mount it. 
