C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Back From The Track...Happy

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Old Oct 15, 2012 | 11:24 AM
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Default Back From The Track...Happy

Ran at my local track a few weekends ago and I am fairly happy with the results. It was a Muscle Car meet, so we ran in 1/2 second intervals. I ran in the 12.00-12.49 class won the first against a 440 powered cuda, but lost second round due to a -.049.
Car was very consitant with the best 60' times and 1/8 I have ever had.

60'......1.75
330.....5.05
1/8.....7.81
1000'......10.22
1/4.....12.25@111.57

These times where with hoosier DR's, 3.54 gears, and a 3000 stall.

Wondering if times would be alot better with a lower gear and a higher stall. 3.73's or 3.90's with a 3500-4000 stall??? Any opinions?
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Old Oct 15, 2012 | 02:54 PM
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Nice times!!

What else has been done to the car?
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Old Oct 15, 2012 | 03:23 PM
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Originally Posted by STL94LT1
Nice times!!

What else has been done to the car?
Engine is a stock bottom 350 LT1 with...

Trickflow 21* Heads (No Porting)
Victor 5898 Head Gaskets
Ported stock manifold
TPIS ZZ409 cam
TPIS 52mm TB
TPIS Headers
TPIS AFPR
1.6 RR's
255 LPH Walbro
32 lbs FIC injectors
MSD Opti & Coil
SLP Claw
Cats Removed
X Pipe
Magnaflows
Doug Rippie Dyno Tune
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Old Oct 15, 2012 | 04:02 PM
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Nice
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Old Oct 15, 2012 | 09:50 PM
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Id fully port the heads and run it before deciding.
Hard to say what change in ET but mph should pick up

Once change at a time.
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Old Oct 16, 2012 | 10:32 AM
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Good run
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Old Oct 16, 2012 | 11:51 AM
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Where was the tach at when you crossed the traps?
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Old Oct 16, 2012 | 03:13 PM
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Originally Posted by Mike 92LX
Where was the tach at when you crossed the traps?
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Old Oct 16, 2012 | 06:33 PM
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Originally Posted by GS4-LT1
Ran at my local track a few weekends ago and I am fairly happy with the results. It was a Muscle Car meet, so we ran in 1/2 second intervals. I ran in the 12.00-12.49 class won the first against a 440 powered cuda, but lost second round due to a -.049.
Car was very consitant with the best 60' times and 1/8 I have ever had.

60'......1.75
330.....5.05
1/8.....7.81
1000'......10.22
1/4.....12.25@111.57

These times where with hoosier DR's, 3.54 gears, and a 3000 stall.

Wondering if times would be alot better with a lower gear and a higher stall. 3.73's or 3.90's with a 3500-4000 stall??? Any opinions?
what dana 36 or 44. all i hear is how the 36 is weak. just wondering what yor running.
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Old Oct 18, 2012 | 08:36 PM
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Sounds like a well matched combo that is fun and street friendly.Porting the heads is a good idea but past that I say leave it alone or the trade off will be less friendly for cruising and driveability.

Nice run but I was rooting for the 440 cuda!
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Old Oct 19, 2012 | 04:19 AM
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Thanks for the thumbs up guys!

The stock 36 was replaced with a built 44, bought it from one of the members here, everything was cryo'd and dry lubed and came with Denny's Nitrous half shafts. I also replaced the stock drive shaft with a HD steel and bigger 1350 Spicers.

At the traps the tach was at 5000, I have shift set for 6000 at WOT.
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Old Oct 19, 2012 | 04:21 AM
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Originally Posted by 96 lt-4
Nice run but I was rooting for the 440 cuda!
OUCH! Really?
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Old Oct 20, 2012 | 09:29 AM
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What numbers did you produce at the rear wheels on the dyno?
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Old Oct 20, 2012 | 08:57 PM
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Originally Posted by GS4-LT1
Thanks for the thumbs up guys!

The stock 36 was replaced with a built 44, bought it from one of the members here, everything was cryo'd and dry lubed and came with Denny's Nitrous half shafts. I also replaced the stock drive shaft with a HD steel and bigger 1350 Spicers.

At the traps the tach was at 5000, I have shift set for 6000 at WOT.

Sweet. Car def needs more gear in it for sure. You want it to be around 5700-6000 going through the traps
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Old Oct 21, 2012 | 05:29 AM
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Originally Posted by l98tpi
What numbers did you produce at the rear wheels on the dyno?
373 at the rear, I think thats around 440 at the crank.

I did walk a stock 2012 GS Vette by 3/10th's in time trials, that felt pretty good!
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Old Oct 21, 2012 | 05:32 AM
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Originally Posted by Mike 92LX
Sweet. Car def needs more gear in it for sure. You want it to be around 5700-6000 going through the traps
Thanks, Just looking for that 11.9x timeslip.
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Old Oct 24, 2012 | 11:29 AM
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Originally Posted by GS4-LT1
OUCH! Really?
I loved my vette but I am a diehard mopar guy since my first one at 15.That was 21 years ago and I still have one old mop lying around.They are kinda like vettes in that they are expensive to build.

Hit it with a 100 shot and you won't stop smiling.More gear may get you that 11 sec slip just depends on how much hwy driving you do.

Don't know what rpm your converter is stalling at but a good unit may improve your 60ft and that helps everywhere.

Sounds like you are about maxed out on a stock bottom end so keep that in mind and start building a stout shortblock for some big boy fun.

Last edited by 96 lt-4; Oct 24, 2012 at 11:33 AM.
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Old Oct 24, 2012 | 02:51 PM
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Mph definitely should improve. My 93 with headers no cats, 1.6 RR , pullies and a 4.09 rear gear ran 111 mph (12.8). I have a feeling your shifting way too early

If I were you Ditch caring about useless e.t and work on getting the mph up. At that speed you're barely faster than a bone stock 1997 c5 with long tubes.

Last edited by 5abivt; Oct 24, 2012 at 02:53 PM.
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Old Oct 24, 2012 | 04:00 PM
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My Buddy Rich (93 ragtop) ran 11.80's@115 regularly on the stock bottom end... TEA Ported LT1 heads, Hot Cam, 3000 Stall, D44 4.09 rear gear on 26X11.5-15 ET Streets.

I think his wife actually ran a best of 11.71@118 before it kicked the rods out of the stock bottom end.

You already have a pretty good running car. Be careful chasing that 11.9X time slip.... You really don't have the MPH to get there without knocking a ton off your 60ft, and that is going to start breaking rear end stuff.

The best way IMO, is to have those heads ported and pick it up on the big end.... It's not a cheap solution but neither is replacing that D44 every weekend.
Will
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Old Oct 24, 2012 | 05:39 PM
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Originally Posted by GS4-LT1
Thanks, Just looking for that 11.9x timeslip.
What was the weather like when you ran?


You might get a few tenths quicker with the upcoming cooler weather.


I've only had my car at the track once since installing a new engine and that was back in July. I'm hoping to be .4 or .5 quicker when I hit the track again in mid November.
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