LSX Camaro

Starting the build on a 2017 C7 Grand Sport. It started off with an Edelbrock E-Force supercharger. 3 pistons broke at the middle ring lands within a few hundred miles.

We have decided to take this build to the next level in a totally new direction. Here is the beginning list of parts and components I intend to use.

ERL 427 new short block, all forged internals
10.5:1 compression ratio, custom pistons
Custom head gaskets
Ported heads from West Coast Cylinder Heads, with new HD valves
BTR Valve springs
BTR Custom spec. blower cam, 38% cam lobe
BTR Pushrods
BTR Fuel pump stud
LT4 Injectors
LT4 Fuel pump
LT4 Cam follower
Johnson lifters
Straub Technologies trunion upgrade
Elite 3 Port Catch Can
ProCharger F1C, boost TBD later
ATI Balancer
LG solid engine/trans mounts
Alky Control meth kit
Dewitt's radiator
Dewitt's external oil cooler
Z06 Cooling fan
ARP head bolts
Seibon Carbon Fiber hood

I will post updates on this build as I go.

robert miller

Sounds like a nice build but with all of the parts for the money diff I would put ARP head studs in the block they will hold down with more force than the bolts. Robert

vetteandv

Is this the same shop that installed/tuned the supercharger? I would question the tune if you lost a bottom end after a few hundred miles.

LSX Camaro

You are correct sir, I will be running head studs. My typo.

blown81bu

I think u need to find a tuner first

robert miller

To the OP here buddy been in your shoes and let me tell you on this. 8 out of 10 guy that tell you no problem they know just what you want & can tune the car. Can't do crap other than get into HP tuners r what ever and turn off about every safe item for the car that will tell you this is bad. Plus 9 out of 10 cant tune a car at all for the street. Now the WOT part of the tune per say tune it so it has enough gas & air just close in wot and the car will run ok.

If you did those pic's from a tuner in your car in a few hundred miles let me tell you it was the tune that he put into the car. Are you had it way above red line and didn't hit a gear.. Robert

C7&7

New build looks fantastic, but as others have said above I would be VERY skeptical of the original tune that was in the car. You shouldn't of lost a piston with the boost a EForce supplies. Something was wrong in the tune for this to happen. ESPECIALLY just a few hundred miles.

Translator

Correct me if I am mistaken, but I believe that the OP (based on this and other threads) IS the shop/tuner performing the work to this car.

FYREANT

Regardless if he tuned it himself or another person/shop did it, simply put, the tuner responsible needs to consider a different profession. First the Eforce doesn't push that much boost, I believe around 6 PSI and even if there was a manufacturers defect in one of the pistons, he blew THREE of them in a couple hundred miles. My guess is they jumped the timing up to about 20* or more on pump gas!

OP, good luck with the build. Will be a monster when its all done, just have someone else tune it from who did it the first time. Would hate to see all that work blow up again.

Ant

snow

subscribed looking forward to seeing the progress.

C7&7

This thread is depressing to me. This guy bought a GS then spent 10k on a SIMPLE eforce kit to make BASIC power and now is spending over 20k on a motor because of a half *** tune probably. 30k at least and the car isn't 6 months old.

blown81bu

man this is crazy to a 2017 GS'
glad i went the route i did with 3 mods and wicked performance,drives stock 0 issues makes more than a z06 and ran 10.3@140
email tune from Pat G and rolling
i would never ever build another 1000 hp corvette again

live and learn

robert miller

Never again unless it will be 100% race car, and also will never be a corvette again. Cost of that in one of these cars just way more than any other American car. Robert

vetteandv

Exactly what I have planned. Saw your vid on YouTube, nice run!

schpenxel

Agree with previous.. literally my first thought was "there's a tuner that didn't have a clue what he was doing on DI engines.."

Don't let them touch it again unless you're OK with possibly having to rebuild it again.

LSX Camaro

Let me clarify a few details. I am the builder, not the tuner. The original build was a Edelbrock E-Force, custom tune on a all stock 2017 C7 Grand Sport. The car made expected power and ran great with no problems. The customer drove it for ~500 miles. He came back wanting more power. I installed a set of Kooks long tube headers, Kooks X-pipe and a smaller pulley. Another dyno tune was done. The damage occurred about 300 miles later. I should also point out I have a video of the customer driving at 4-5000 rpm for a sustained amount of time. The same way you would throttle a offshore power boat.
The tune was not aggressive on the timing. There were no signs of detonation on the pistons and the AFR was spot on. I stick by my original theory that the rings are too tight for boost. I believe the way the customer drove the car caused extreme pressure and heat in the cylinders. The ring ends came together and cracked the very thin ring lands on the pistons. The only indication of a problem was an oil leak. The rear main seal starting leaking after the customer drove it hard on the video. The engine ran great, and there were no abnormal noises. I did a cylinder leak down test and found significant loss on 5 cylinders.

Fast forward: Now installing a ERL engine with a F1 ProCharger.

FYREANT

Specifically, how much timing was in the tune? And how many pounds of boost after the pulley change? You're theory is logical but would only apply for the way he treated the engine, not the ring gap concern in this case. Reason being is there are a large number of other C7's running up to around 12PSI on stock pistons and rings and not blowing pistons out. Piston ring lands do not break due to too much power. You start bending rods when that happens. I know this thread was not centered on what happened and is more focused on the new build so my apologies for skewing. keep the updates coming.

LSX Camaro

Here are a few updated pics.

Going with a Circle-D torque converter and a carbon drive shaft from The Driveshaft Shop. Also upgrading the engine/transmission mounts to LG solids. Cylinder heads done by WCCH. Ported, BTR springs with heavy duty stainless valves.

LSX Camaro

The ProCharger arrived today.

smajicek

Edelbrock comes with warranty? Did they cover this blown engine?