interesting dyno #'s vs track #'s (not me, but 422ci)
10-13-2002, 05:29 PM
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interesting dyno #'s vs track #'s (not me, but 422ci) Car: 422ci, A4, locked, big converter, C5, 4.10 gear, basically a big motor with all the trimmings... 476rwhp, 435rwtq... Car goes 11.1@124mph on a 1.51...
What do you guys think of those numbers? Car went mid 124's so it's moving pretty decently... And this is with 28 degrees of timing and around 12:1 compression. These folks all know about race gas vs timing this was the best they can get on pump gas...
Thoughts?
Oh and this car went 95.xmph at the 1/8th, car is local to me... I have been going around 97.8mph so there is definitely something not right with my combo looks like I should be going 126-127mph. This C5 is iron block with a cage and CCW wheels so not superlight...
Thx for discussing...
What do you guys think of those numbers? Car went mid 124's so it's moving pretty decently... And this is with 28 degrees of timing and around 12:1 compression. These folks all know about race gas vs timing this was the best they can get on pump gas...
Thoughts?
Oh and this car went 95.xmph at the 1/8th, car is local to me... I have been going around 97.8mph so there is definitely something not right with my combo looks like I should be going 126-127mph. This C5 is iron block with a cage and CCW wheels so not superlight...
Thx for discussing...
10-13-2002, 05:54 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) seems like a definite 126-128 trapspeed car........Cartek's c5's on heads and cam always seem to trap 124 or so, and they have strokers in the 130 range. I dont see why this guy cant <img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />
10-13-2002, 06:56 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) what DA?
He's gaining ~29mph on the big end which is decent, whereas your car is dieing on the top end. Locking up the converter probably added 1 - 2 of his mph if that is what "locked" means.
Bottom line is your converter is carrying you through the 1/8 and your motor is not making the HP on the top end.
He's gaining ~29mph on the big end which is decent, whereas your car is dieing on the top end. Locking up the converter probably added 1 - 2 of his mph if that is what "locked" means.
Bottom line is your converter is carrying you through the 1/8 and your motor is not making the HP on the top end.
10-13-2002, 08:11 PM
#5
Re: interesting dyno #'s vs track #'s (not me, but 422ci) PSJ, you are delinquent in providing us several key data points for your car! We need to see your ATAP results in high gear on your favorite back road along with the fuel pressure to understand what your timing and O2's are doing!
One other key element you left out in this comparison is the exhaust system...what does he have compared to you?
One other key element you left out in this comparison is the exhaust system...what does he have compared to you?
10-14-2002, 11:37 AM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) I just find the HP/TQ #'s very interesting.
C5 has 3" duals and X pipe into Borla mufflers same kind as me.
Sounds like they had the converter locking up too early and it hurts the runs a bit but this was the first time the car has ever been raced in IL.
C5 has 3" duals and X pipe into Borla mufflers same kind as me.
Sounds like they had the converter locking up too early and it hurts the runs a bit but this was the first time the car has ever been raced in IL.
10-14-2002, 02:26 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) Sounds like something is wrong to me, a light C5 with a decent stall like that should be running better ET's with the power, and pulling much better MPH. It MPH's like a 435-440rwhp setup.
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10-14-2002, 03:46 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) Eug- yup.
Terry- no idea. FLP dynoed the car a few weeks ago and I think they do a pretty good job I just wondered about those numbers. It's PI converter I don't recall the size.
476rwhp/430rwtq vs 450rwhp/531tq intersting...
Terry- no idea. FLP dynoed the car a few weeks ago and I think they do a pretty good job I just wondered about those numbers. It's PI converter I don't recall the size.
476rwhp/430rwtq vs 450rwhp/531tq intersting...
10-14-2002, 04:18 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) Terry has an offset ground stock crank.
Anyone have the link to a slip on this C5 from when it was in NJ? I see references to a 10.93 and no slip.
Anyone have the link to a slip on this C5 from when it was in NJ? I see references to a 10.93 and no slip.
10-14-2002, 04:19 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) I think that 396 has an offset ground crank which means its not an all bore. I think that just slipped Terry's mind. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />
4.125" bore * 3.71" stroke = 396ci
John
4.125" bore * 3.71" stroke = 396ci
John
10-14-2002, 04:21 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) Anyway, any more comments about these dyno #'s? Car is not light at all, steel block and a rollbar so it's not lite like a Z06.
10-14-2002, 04:48 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) What are the C5's shiftpoints?
Are they in the 6700-6900rpm range?
If there is a tune in the car for a large nitrous shot (200 plus) the 1-2 shift and 2-3 will be as much as 15-20mph lower than an equivalent NA tune's shiftpoints.
That makes a big difference to NA ET/MPH.
I dont know anything about the background of this car so I am just curious if it is setup to run spray or not.
Cheers,
Chris
Are they in the 6700-6900rpm range?
If there is a tune in the car for a large nitrous shot (200 plus) the 1-2 shift and 2-3 will be as much as 15-20mph lower than an equivalent NA tune's shiftpoints.
That makes a big difference to NA ET/MPH.
I dont know anything about the background of this car so I am just curious if it is setup to run spray or not.
Cheers,
Chris
10-14-2002, 05:35 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) No, right now it's running NA and tuned for NA.
A few folks told me a black C5 with a big motor running close to my times at Byron, and this car has 28" slicks in back since it has a 4.10 gear.
A few folks told me a black C5 with a big motor running close to my times at Byron, and this car has 28" slicks in back since it has a 4.10 gear.
10-14-2002, 05:49 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) To be honest I dont know alot im still fairly new in the LS1 world but it does seem kinda low my car is pulling in the 94 MPH range in the 1/8 and mid-high 122's on motor. And it only has a 346 stock short block- T1cam -GTPheads and a HPP3 for tunning <img border="0" alt="[Firebird]" title="" src="graemlins/formula.gif" />
<small>[ October 14, 2002, 05:52 PM: Message edited by: Street Racer ]</small>
<small>[ October 14, 2002, 05:52 PM: Message edited by: Street Racer ]</small>
10-14-2002, 07:26 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) I think the car went 125mph in NJ, so it's performance has not dropped off.
It's running a good size Vigilante converter that they lock up so maybe it loses mph up top.
Again this car is easily 75 lbs over stock weight with all stuff in it.
Anyone know the car from it's NJ days?
It's running a good size Vigilante converter that they lock up so maybe it loses mph up top.
Again this car is easily 75 lbs over stock weight with all stuff in it.
Anyone know the car from it's NJ days?
10-14-2002, 07:43 PM
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Re: interesting dyno #'s vs track #'s (not me, but 422ci) PSJ the car was at byron sunday. went 11.1 @ 126 w/a 1.52 60ft.He picked it up a bit but,the car doesn't sound right.The 1-2 shift isn't crisp and the rpm's fall off a bit.The e.t isn't there for the mph and 60ft.
It is a BAD RIDE !
I am sure he will get the few bugs worked out.
Larry
www.ls1speed.com
It is a BAD RIDE !
I am sure he will get the few bugs worked out.
Larry
www.ls1speed.com
10-14-2002, 08:37 PM
#20
Re: interesting dyno #'s vs track #'s (not me, but 422ci) </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif"> PSJ, you are delinquent in providing us several key data points for your car! We need to see your ATAP results in high gear on your favorite back road along with the fuel pressure to understand what your timing and O2's are doing!
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">PSJ, one last time....still waiting for your answers here <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" />
</font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">PSJ, one last time....still waiting for your answers here <img border="0" alt="[Banging Head]" title="" src="graemlins/gr_banghead.gif" />