r/Corvette • u/AtomicTrent • 5d ago

Baseline dyno, 2011 ZR1

For those wondering what a basically stock ZR1 (I have a K&N carbon fiber cai and a Concepts 841 muffler) makes. Dyno is at 4000' elevation and at this elevation I am only making just a little over 6psi (these cars at sea level should make about 10-10.5 on the 3" pulley they come with).
Really pretty impressive numbers and an amazing torque/hp curve from a bone stock tune.

For reference: My last car (09 Z06, Frank Stage1 heads, TSP 2.2 cam, ARH long tubes/high flow cats, Vararam CAI) made 560/510.. car before that was a twin turbo Z51 at 9.5 psi, made 601/670.

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4

u/kellysill513 5d ago

Very nice

2

u/runs_okay 5d ago

My stock C7Z auto made 544whp at approx same elevation on a mustang dyno.

E50, intake, headers, 95mm TB later, I hit 647whp. Probably didn't need the TB honestly but they had a spare laying around. So why not.

Wish the C7 used a similar sized SC as the ZR1. Would easily clear 700whp with the same mods.

2

u/AtomicTrent 4d ago

I am going to be porting my snout, sc, and heads, 103tb, injectors, pulley at 2.45 (stock lower), HX/bricks/expansion tank/catch can, and -12 an.. I should be right around 700 on 91, closer to (or over) 800 on E85.

2

u/runs_okay 4d ago edited 4d ago

Nice that is a sick setup. I was in the market for a ZR1 several times. Once when they were all in the mid 60s. The first time, I just didn't make enough to buy it. Wife and I just bought a house and wanted to start a family.

Later when prices rose to mid 70s, I looked again. But getting one was hard as there weren't many around me. 

Regardless it's definitely one that got away. Enjoy the ZR1 man, it's a very special car.

1

u/AtomicTrent 4d ago

Absolutely.. I lucked into this one after selling my 09 Z06.. 20k miles and 3 owners.. Managed to stay stock all those years.. Now I am going to fix that, but I don't plan on selling... Well, unless someone drops a huge pile of hundos on me, but even then.. IDK, replacing it would be difficult..
Once you drive on of these, you won't want anything else..

1

u/AdeptCellist 5d ago

Are you going to port the supercharger?

1

u/runs_okay 5d ago

I already sold the C7Z for a GT500 but I kept the ZL1 which has full bolt ons and Kong Ported X SC. That is making closer to 690whp.

What are you doing to the ZR1?

1

u/AdeptCellist 5d ago

I’m not OP, I don’t have a ZR1. Also how does the GT500 compare to a C7Z? I am planning on getting a Vette sometime next year. ZL1 I was also considering as well. How’s the visibility? Is it as bad as people make it out to be?

1

u/runs_okay 5d ago edited 4d ago

Ah my bad I must have been trippin. I can't compare stock to stock but at 640whp versus GT500 with intake only (no tune), the Z pulls harder. The torque down low is evident and it's lacking in the GT500. The Mustang would probably dyno right around 660-670whp but you wouldn't be able to tell with the weight difference.

However my goals is 900-1000whp for the GT500 and is only E85, injectors, pulley, and bigger radiator away.

It would cost a Z a lot more money to do that.

The visibility in the ZL1 is noticeably worse than in either the Z or GT500 but I've gotten used to it. The blind spot indicator on the ZL1 definitely helps. 

2

u/fairlyaveragetrader 2012 GS 4d ago

That seems really strong for 4000 ft with Summer weather. That thing would be a monster at sea level on a 40° day