Finally some track times out of or EFI connections set-up
04-18-2011, 06:41 AM
#1
10 Second Club
Thread Starter
iTrader: (6)
Join Date: Mar 2007
Location: Fuquay Varina, NC
Posts: 952
Likes: 0
Received 0 Likes
on
0 Posts
Finally some track times out of or EFI connections set-up A guy I know bought my old 97 Z28. We freshened up the 383 that was in it and did the efi connection set-up on it. We built our own harness with their kit. Car runs and drives great. Still working on the tune but the car ran an 11.37 at 120 yesterday. car is about 3450 race weight has a 383 with AFR heads and a cc306 cam.
http://www.youtube.com/watch?v=4C9AxpE5lh0
http://www.youtube.com/watch?v=4C9AxpE5lh0
04-18-2011, 02:01 PM
#7
I'm not the owner of the car but I'll give a little more detail about the setup.
First off, we are not still "working on the tune" as it says in the original post. The "tuning" is done. It may help to tweak it some, but it's OLSD so it will probably always need some tweaking. Not to mention that it has no IAC motor (which is why the idle it slightly low in the video) so the idle is pretty much gonna do whatever it wants to do, until something is done about that. Either way though, the EFI connection setup and LS1 PCM make this a breeze to tune correctly and much more of a reliable car.
The 60' on the 11.37 pass was a horrible 1.67. From the logs I have on this car prior to the AFR heads ( from a few months ago) it literally looks like it has no stall to it. RPMs just start slowly climbing from whatever there are being held to at the line. It has a cheap ACC converter, so that could be to blame, but it may be something else all together or a combination of things. The kind of 60' that this car should have would put it in the 10s easy.
I bought this particular cam about 10 years ago when I was going to do a 383 in my LT1, before selling most of my stuff to IH8FORD. While it was in my possession the XER lobes came out and no one wanted anything to do with the CC306 anymore. It made me not feel so bad about selling the stuff, but this car and cam has always ran better than most of the LT1s I've seen regardless of the displacement.
This car ran 7.04 when it first went together about 8 years ago, but that was on a 1.45 60' and probably 2 points more compression. This time the 1/8 was a 7.2 with a 1.67 60'.
Yeah, yesterday at FMP.
First off, we are not still "working on the tune" as it says in the original post. The "tuning" is done. It may help to tweak it some, but it's OLSD so it will probably always need some tweaking. Not to mention that it has no IAC motor (which is why the idle it slightly low in the video) so the idle is pretty much gonna do whatever it wants to do, until something is done about that. Either way though, the EFI connection setup and LS1 PCM make this a breeze to tune correctly and much more of a reliable car.
The 60' on the 11.37 pass was a horrible 1.67. From the logs I have on this car prior to the AFR heads ( from a few months ago) it literally looks like it has no stall to it. RPMs just start slowly climbing from whatever there are being held to at the line. It has a cheap ACC converter, so that could be to blame, but it may be something else all together or a combination of things. The kind of 60' that this car should have would put it in the 10s easy.
This car ran 7.04 when it first went together about 8 years ago, but that was on a 1.45 60' and probably 2 points more compression. This time the 1/8 was a 7.2 with a 1.67 60'.
Yeah, yesterday at FMP.
Trending Topics
04-19-2011, 06:10 AM
#14
Last edited by JonCR96Z; 04-19-2011 at 06:16 AM.
04-19-2011, 07:46 AM
#15
07-13-2011, 09:49 AM
#17
No way to know. The original setup had one of the throttle body screws come loose and go down into one of the cylinders. It pretty much ruined the head, but the guy that bought it from IH8FORD took it to someone that said that they could fix it and that worked for a few weeks. So now it has AFRs on it which I'm sure change hp a little bit over some stock ported heads.
The tune that was in it was one that Ed Wright had done on a similar setup, so I'm sure that it wasn't far off. And the car ran great like that.
Plus the converter is different as well and who knows how that changed it. It doesn't 60' as good now, so it may be a "tighter" converter and mph (and dyno more) or it may just be straight up junk. current converter is an ACC 4000 (which literally doesn't flash at all off of the line). And the old one that cut 1.4 60's was a B&M holeshot 2800-3200. With a good converter this car would be fast.
07-13-2011, 10:25 AM
#19
Just the fact that it does work. If you want a direct before and after thread you'll just have to do one yourself.
Even still it won't be the exact same because the tune will be totally different. This kit only comes with a tune from an 02 LS1. That isn't going to run an LT1 very well. The only true comparison of this kit would be to tune your LT1 PCM as good as you possibly can then do the swap and tune it as best it can be then you'll see the results. Which at that point there probably won't be any real gains in hp.
The real point of this kit is to get rid of a problem on LT1 cars (opti) and to give more and better options for tuning.
Even still it won't be the exact same because the tune will be totally different. This kit only comes with a tune from an 02 LS1. That isn't going to run an LT1 very well. The only true comparison of this kit would be to tune your LT1 PCM as good as you possibly can then do the swap and tune it as best it can be then you'll see the results. Which at that point there probably won't be any real gains in hp.
The real point of this kit is to get rid of a problem on LT1 cars (opti) and to give more and better options for tuning.
07-13-2011, 11:47 AM
#20
Village Troll 
iTrader: (2)
If you were one of the few to claim how the 306 is junk then clearly this thread is proof of your retardation. Last edited by SS RRR; 07-13-2011 at 12:02 PM.