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My 1999 Z28 Dyno & Track Results

Old 12-30-2016, 03:00 AM
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Default My 1999 Z28 Dyno & Track Results

1999 Z28, Induction- K&N FIPK, Stock Maf, Stock TB, Dorman LS6. Fuel- Stock Pump, GTP Injectors. Heads- Stock 853s, CC Trunion Upgrade, CC 921 Spring Kit, CC VS, CC 7.4s. Cam- Lingenfelter GT12 227/235 .614 .621 115LSA, LS2 Chain, Melling Pump, Jegs 25% UDP. Exhaust- Hooker 1 3/4" Super Comps, Custom 3" TDs Magnaflows Turndowns. Trans- Fully Built 4L60E, PI Vigilante 4000 10.5" MD. Rear- Stock 10 Bolt, 3.73s, Jegs Girdle Cover. Wheels- 15x8 RS, MT ET Street SS 275/50/15" 25psi. Dyno- Dyno Jet 24x. Results- 364rwhp, 319rwtq. Track- NTR. ET- 12.23 @ 110. What do You Guys Think?
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Old 12-30-2016, 03:28 AM
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Old 12-30-2016, 03:35 AM
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Old 12-30-2016, 03:48 AM
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Lingenfelter CNCd 799s Stock Valves 62cc and Peak Speed Ported Dorman LS6 and TB Going On Soon.

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Old 12-31-2016, 03:20 PM
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Sounds about right to me. Excellent 60'.
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Old 12-31-2016, 04:40 PM
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Do you know what DA you had for the track? I think the mph seems low for bolt on and cam..my 02 hit 111 mph bolt on only and 4000 stall.. maybe it's DA, or tune?

Does the car feel like it's running strong? Smooth idle?
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Old 12-31-2016, 09:02 PM
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Seems like it would of done more mph
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Old 01-01-2017, 07:25 AM
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Ok Thank You Denom, Not Sure on the DA RollinSScamaro Great ET & MPH Out of You're TA. madmike9396 I'm Thinking It's Slippage from the Vigilante.

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Old 01-01-2017, 08:25 AM
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Was your converter locked during the dyno pull ?
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Old 01-01-2017, 06:22 PM
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madmike9396 the Vigilante was Unlocked.
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Old 01-01-2017, 08:15 PM
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Ah that explains the lower numbers on dyno.
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Old 01-06-2017, 10:37 AM
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Definitely under achieving there unless you're at some serious DA. That K&N Fipk is junk I'd go back to a lid setup and SSRA or Chrs1313 air duct system. Take the front sway bar off if it's still on there
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Old 01-06-2017, 12:25 PM
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How much does a ported dorman ls6 intake cost
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Old 01-06-2017, 12:47 PM
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He's in ohio so tracks shouldn't be terrible. But that way off. Car shoukd be running that or faster with bolt ons.

These cars are very much capable of running 11s these days with bolt ons. You'll learn alot about them doin it that way to.

Tq is way down to.
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Old 01-06-2017, 01:48 PM
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I agree with Hio, torque is down. He should be in the 11s pulling high 1.5x 60ft times with that power.

Is the car spinning at all?
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Old 01-06-2017, 11:05 PM
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mph seems way off. It should not be under 114-115mph...in bad condition. My old LS1 with a small TR 22x cam was running [email protected] full weight, track noob driver mod LOL, stock gearing, horrible 2.1-2.2 0-60ft. It had LS6 intake/ported TB/ported 98' heads (stage 3, I think they were knida pretty good), stock rear 3:42 with street tires. This with a big knock retard on launching cause the Ypipe was banging the floor real hard. man I had no clue at the time...

Cam choice?
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Old 01-07-2017, 06:01 PM
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The K&N FIPK Out Performs the SLP Lid I Had Before. Sway Bar is Removed My Car Only Weighs 3300 with Me In It. I Think My Issue is Converter Slip.
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Old 01-09-2017, 05:57 AM
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Looks pretty bad to me no offense. I'd expect trap to be 7mph higher in decent da. Those are bolt on times
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Old 01-09-2017, 07:16 AM
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who did the tune? like others said, the mph seems off. I ran a bit slower than your ET with stock CR in my LQ4 but with a crappy 60' haha.
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Old 01-09-2017, 11:00 AM
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Heads are def holding you back some, however IMO still should of cracked into the 11's
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