6.4 tuned vs lb7 - Chevy and GMC Duramax Diesel Forum
Competition Discuss Drag Racing, Sled Pulling, and Dyno Event setup, technique, and results.

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post #1 of 78 (permalink) Old 12-29-2015, 05:00 PM Thread Starter
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6.4 tuned vs lb7

So my sister's boyfriend has a 6.4 and just got it tuned ,I believe he said h and s tune 310hp and deleted ,other wise stock. Was wondering what you think my odds of winning against him would be. I know there not slow trucks and are easy to gain hp with. I think my sig has all the info on my truck other then its a single cab. Thanks
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post #2 of 78 (permalink) Old 12-29-2015, 05:04 PM
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Sig didn't show up. But if you don't have a built trans and can't launch in 4wd & he isn't lifted to the sky your gonna have a hard time. My friend has a Spartan tuned 6.4 & it gets down. Its always in the shop but runs good when on the road

05 GMC 3500 SRW ECLB, EFI by Kory Willis, Built trans w/1056 converter, Raptor 150, built front end, DHD brace, 4" straight exhaust, banks air intake, afe mp, Profab EGR delete, Insight CTS.

Never water yourself down just because someone can't handle you at 100 proof
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post #3 of 78 (permalink) Old 12-29-2015, 05:10 PM Thread Starter
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K I'll put what I got right now.

Exergy sportsman pump
30 over injectors
Headstuds
Lift pump 165 air dog
Tie rod sleeves
Fully built ppe trans billet everything
Bigger front rear drive shaft with splicer u joints
Boost valve.
4in mbrp exhaust
Mbrp down pipe
Torque converter lock
Efi live dsp 5 max effort tube
Turbo has wicked wheel
Merchant motor mounts
And I think it's gear ration is 373

I'll update my sig when my phones not being dumb.
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post #4 of 78 (permalink) Old 12-29-2015, 05:16 PM
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Be a good race for sure. Get a video.

05 GMC 3500 SRW ECLB, EFI by Kory Willis, Built trans w/1056 converter, Raptor 150, built front end, DHD brace, 4" straight exhaust, banks air intake, afe mp, Profab EGR delete, Insight CTS.

Never water yourself down just because someone can't handle you at 100 proof
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post #5 of 78 (permalink) Old 12-29-2015, 05:28 PM Thread Starter
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Be a good race for sure. Get a video.
I have a go pro so no excuse to not get a good video. Only bad thing is winter and he don't want to race till summer by then I'll hopefully have a nice turbo set up. Just wanted to get some thoughts on it and if there's anything I should change. Also any recommendations on a turbo set up with my mods above would be great.
post #6 of 78 (permalink) Old 12-29-2015, 05:48 PM
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If your not lifted get a DHD centerlink brace. If you are go the cognito route.
Gusdieselboy and BigRoller like this.

2004 LB7 CCSB Pro-Fab intake horn, full CAI, Danville 2.5 WS charger, tie rod sleeves, complete moog front end, LML drivers side, Air Dog II 165 and a 4" MBRP exhaust and downpipe! Built revmax tranny by K&K performance, dsp5 with my tuning!
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post #7 of 78 (permalink) Old 12-29-2015, 06:10 PM Thread Starter
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If your not lifted get a DHD centerlink brace. If you are go the cognito route.
How much do the center links run?
post #8 of 78 (permalink) Old 12-29-2015, 06:10 PM
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Lots to think about when picking a turbo. Do you tow often, give up spool for top end, preference on twins or single, how hard do you want to push stock bottom end, budget? Might have to swap converter to suit turbo selection. I still haven't answered any of those questions myself & hence still have a stock turbo.

05 GMC 3500 SRW ECLB, EFI by Kory Willis, Built trans w/1056 converter, Raptor 150, built front end, DHD brace, 4" straight exhaust, banks air intake, afe mp, Profab EGR delete, Insight CTS.

Never water yourself down just because someone can't handle you at 100 proof
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post #9 of 78 (permalink) Old 12-29-2015, 06:18 PM Thread Starter
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Yea exactly what I was thinking about that's why haven't jumped at a turbo yet.
Towing no not really.
Truck pulling I will be doing.
Drags I'll be doing.
I have precision converter.
No preference on single or twin turbo.

I want a good 700 hp range and don't want it to be really laggy or needing it to build boost forever.

If engine blows Id have it done right and build bottom end. For now not worried about it.
post #10 of 78 (permalink) Old 12-29-2015, 06:33 PM
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S475, 87, 1.0 housing
2500 rpm+ converter
Maybe dual pump depending on how you hold rail pressure
Good tuning

That'll get you close. Definitely walking the thin line of breaking the bottom end.

05 GMC 3500 SRW ECLB, EFI by Kory Willis, Built trans w/1056 converter, Raptor 150, built front end, DHD brace, 4" straight exhaust, banks air intake, afe mp, Profab EGR delete, Insight CTS.

Never water yourself down just because someone can't handle you at 100 proof
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