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Old 05-25-2019, 07:23 PM   #1
CesarT
 
Drives: '17 1ss
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Fbo 1le 530/495

Been doing alot of testing with my '17 1le with the hi ram. Added a ati ud pulley and speed density tune from Dave Krysienski @ EFX tuning and some minor modifications on the hi ram since last i was on the dyno. Unfortunately i didnt get a baseline when my car was stock on this dyno. Final numbers are 530/495. Now to get to the track...timeslip coming soon!

Mod list -
My ported holley hi ram/95mm tb
E85
Speed engineering 1 7/8ths headers
Speed density tune by Dave Krysienski
Velocity stack on hi ram
Ati ud pulley



https://youtu.be/qLL20wdFVXE
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Old 05-26-2019, 05:09 PM   #2
ULTRAZLS1


 
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That’s bad ass.

Have you seen how much power drops with heat soak with the aluminum manifold ? I’m guessing this pull was not heat soaked
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Old 05-26-2019, 10:09 PM   #3
CesarT
 
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I havent but it definately holds some heat!
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Old 05-26-2019, 11:55 PM   #4
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no fuel system mods? how many milliseconds are the injectors open?
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Old 05-27-2019, 05:22 AM   #5
CesarT
 
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Stock fuel system. No idea on the injectors thats all the Dave's deptartment
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Old 05-27-2019, 04:01 PM   #6
Snowblind

 
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Stout numbers sir, looking forward to seeing them timeslips.

Their is still quite a bit of pump and injector window left at that power level.
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Old 05-27-2019, 07:15 PM   #7
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Quote:
Originally Posted by JCunningham View Post
no fuel system mods? how many milliseconds are the injectors open?
NA can go a long way on the stock fuel system being the fueling demands are much less then FI.
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Old 05-27-2019, 07:38 PM   #8
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So uh, are these numbers really high or am I missing the mods that are adding almost 130whp over stock?

I ask because I think I need all these things.
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Old 05-28-2019, 02:41 AM   #9
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yeah let’s see some weight and trap speeds. badass that the stock cam cooperates above 6500. stock valvespring?
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Old 05-28-2019, 07:27 AM   #10
MP3BOOSTED

 
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stock cam? how do you like the high ram?
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Old 05-28-2019, 07:41 AM   #11
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Quote:
Originally Posted by s346k View Post
yeah let’s see some weight and trap speeds. badass that the stock cam cooperates above 6500. stock valvespring?
The limiting factor for power range on these engines is not the valvetrain, it's the shitty stock intake manifold. Thanks to the C7 the 6th gen had to suffer as well. With VVT, we can still make good use of the added rpm the high ram adds.
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Old 05-28-2019, 07:47 AM   #12
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With no baseline you can't even really say anything about the numbers either way, it could be a super happy dyno and started at 430 rwhp. Trap speeds will tell the tale.
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Old 05-28-2019, 08:45 AM   #13
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Dynojet sae corrected is usually pretty accurate at most places. But I guess you never know

I’ve seen other hi ram bolt on cars over 500 too. One of PRAY’s cars did 505 with an a8 still in 5th gear.
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Old 05-28-2019, 10:45 AM   #14
CesarT
 
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Yes stock cam and stock valve springs. Ive been 124.8mph in 5k da. Well see in a few weeks what it does all out now. Ill be doing some 1/8th mile testing this weekend. As cast hi ram did 497/471 on this same dyno
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