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11-08-2016, 04:55 PM
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#1 |
     
Drives: ZL1 Join Date: Sep 2011
Location: Phoenix
Posts: 1,524
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Aftermarker Pistons past 700WHP
Does anyone have experience on if aftermarket pistons are needed past 700WHP
Speaking with my shop, they are stated that LT1 pistons aren't as durable as LS3s Just looking for insight Thanks |
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11-08-2016, 06:07 PM
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#2 |
 
Drives: 2016 Camaro 1SS Hyper Blue Metallic Join Date: Jun 2015
Location: TN
Posts: 49
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For a direct answer it would be in your best interest to do it. I have asked about engine boost and the response was to upgrade if going beyond 650 for any extended periods unless running E85 to which you might be ok a bit further. I believe the AGP TT kit goes into the 750-800 HP range on the stock pistons though. I rather not risk my pistons being shot out of my hood three states over to be picked up.
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"Ask not what the camaro can do for you but what you can do with your camaro."
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11-08-2016, 06:17 PM
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#3 |
Drives: 2016 1SS, 2017 JKU Wrangler Join Date: Mar 2016
Location: San Diego
Posts: 876
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Lots of c7 guys making above 700whp on stock pistons I'm still not sold yet on replacing mine at 650whp.
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SLO 1SS - sold
1SS MRC NPP 6MT 2018 Ram Rebel 4x4 5.7 |
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11-08-2016, 06:52 PM
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#4 |
Drives: 16 2SS 6MT NPP MRC / 15 K1300S Join Date: Mar 2016
Location: NW of Austin
Posts: 1,034
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 Rohana RFX-5 10/11, M/T 275/305, Eibachs, Hellwigs, Hurst SS, DMS LT4 SC 596HP/589TQ, DMS Low-side, Kooks 2LTs, MBRP Race, Rotofab, MMS CC |
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11-08-2016, 06:53 PM
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#5 |
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Drives: ZL1 Join Date: Sep 2011
Location: Phoenix
Posts: 1,524
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Yup that's the shop that told me
Sent from my iPhone using Tapatalk |
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11-08-2016, 07:36 PM
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#6 |
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Drives: 16 2SS 6MT NPP MRC / 15 K1300S Join Date: Mar 2016
Location: NW of Austin
Posts: 1,034
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I wonder if the failures are catastrophic or not?
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Rohana RFX-5 10/11, M/T 275/305, Eibachs, Hellwigs, Hurst SS, DMS LT4 SC 596HP/589TQ, DMS Low-side, Kooks 2LTs, MBRP Race, Rotofab, MMS CC |
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11-09-2016, 12:25 AM
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#7 |
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Drives: 2015 C7 Z06 M7 Join Date: Dec 2012
Location: So-Cal
Posts: 665
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Plan to be back on the dyno in about a week to see where we can get the car can go with the stock block. Stock pistons can normally go pretty far as long as there is absolutely no knock. I'll post once I have some results...
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11-09-2016, 05:37 AM
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#8 | |
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Drives: ZL1 Join Date: Sep 2011
Location: Phoenix
Posts: 1,524
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Quote:
What power adder do you have? Sent from my iPhone using Tapatalk |
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11-09-2016, 10:10 AM
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#9 |
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Drives: 2016 1SS, 2017 JKU Wrangler Join Date: Mar 2016
Location: San Diego
Posts: 876
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Labor on forged pistons install is probably stupid expensive.
__________________
SLO 1SS - sold
1SS MRC NPP 6MT 2018 Ram Rebel 4x4 5.7 |
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11-09-2016, 10:14 AM
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#10 |
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Drives: ZL1 Join Date: Sep 2011
Location: Phoenix
Posts: 1,524
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Yeah that's what I'm expecting
Drop in pistons alone are $1200 They are suggesting to do same time as cam. I may just plan a HCI setup Sent from my iPhone using Tapatalk |
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11-09-2016, 10:39 AM
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#11 |
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Speed Freak
Drives: 2013 ZL1 Camaro, 2016 Camaro SS Join Date: Jun 2013
Location: Ardmore, OK
Posts: 2,637
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I love power as much as the next guy but I just don't see the need to pay for drop in forged pistons at the same compression ratio. The high compression stock pistons are part of the power limitations of this motor. If you are running E85 or race gas then it probably should have a piston upgrade but if you run it on pump gas it just isn't going to make enough power for the pistons to fail unless you spray a lot of meth on it. Leave the meth off and do a safe tune and the stock pistons will be fine. If you want a monster build then forge the whole shortblock and drop the compression ratio some.
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2016 SS -AGP twin Borg Warner 7163 EFR's, LT4 mechanical pump, LT4 injectors, Walbro 255 low side, Castrol SRF. 734whp/759 tq
2013 ZL1 -ADM - 427 LSX 6 bolt, O-ringed block built by LME. Twin PT6466 turbos. RPM custom manual trans, RPS Quad carbon clutch, 9" Hendrix rear diff & axles. ADM/squash fuel system, Ron Davis radiator, Spal fans, AGP air to air, turbo plumbing. LPE oil cooler, rear bushing upgrade, roll bar...etc. rwhp 1400+... 212.5mph, best Texas mile to date.  |
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11-09-2016, 03:20 PM
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#12 |
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Drives: 16 2SS 6MT NPP MRC / 15 K1300S Join Date: Mar 2016
Location: NW of Austin
Posts: 1,034
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What they are the same compression ratio?!?!?
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Rohana RFX-5 10/11, M/T 275/305, Eibachs, Hellwigs, Hurst SS, DMS LT4 SC 596HP/589TQ, DMS Low-side, Kooks 2LTs, MBRP Race, Rotofab, MMS CC |
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11-09-2016, 04:21 PM
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#13 | |
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Speed Freak
Drives: 2013 ZL1 Camaro, 2016 Camaro SS Join Date: Jun 2013
Location: Ardmore, OK
Posts: 2,637
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Quote:
If I put in new pistons I want less compression so I can throw more boost at it. I like the idea that someone at ADM is working on the cylinder heads to decrease the compression a little there. I'm still thinking that eventually a 417 stroker kit and the Lingenfelter modified fuel system is going to be required to really use the boost all of these FI systems can make.... in reality at least $10K more than we paid for FI.
__________________
2016 SS -AGP twin Borg Warner 7163 EFR's, LT4 mechanical pump, LT4 injectors, Walbro 255 low side, Castrol SRF. 734whp/759 tq
2013 ZL1 -ADM - 427 LSX 6 bolt, O-ringed block built by LME. Twin PT6466 turbos. RPM custom manual trans, RPS Quad carbon clutch, 9" Hendrix rear diff & axles. ADM/squash fuel system, Ron Davis radiator, Spal fans, AGP air to air, turbo plumbing. LPE oil cooler, rear bushing upgrade, roll bar...etc. rwhp 1400+... 212.5mph, best Texas mile to date. |
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11-09-2016, 06:07 PM
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#14 |
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Drives: 16 2SS 6MT NPP MRC / 15 K1300S Join Date: Mar 2016
Location: NW of Austin
Posts: 1,034
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Makes no sense. The problem only exists with boost and because of the high compression. Shouldn't take too much engineering to create a piston that still balances but with lower compression???
Didn't we use head spacers or thicker gaskets back in the day??? Are the LT1 and LT4 combustion chambers identical?
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Rohana RFX-5 10/11, M/T 275/305, Eibachs, Hellwigs, Hurst SS, DMS LT4 SC 596HP/589TQ, DMS Low-side, Kooks 2LTs, MBRP Race, Rotofab, MMS CC |
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