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C6 Corvette ZR1 & Z06General info about GM’s Corvette Supercar, LS9 Corvette Technical Info, Performance Upgrades, Suspension Setup for Street or Track
My .55 was 6900 but I was shifting at 7200 on the 164 mph passes during the 1/2 mile event which is .57. It was a little over 7100 crossing the line. According to that calculator, it is telling me I need about a .670 lift cam to be at .55 (beginning of the choke point). My cam is a .639 lift so I can agree that a somewhat larger camshaft would help this engine breathe a bit better.
Ordered a velocity stack to test out on the hi ram. The 4.5" intake is great for ingesting a TON of air, but I feel the air speed can be improved. I did some testing a couple setups ago with a 4" intake tube and velocity stack and it was good for around 15wtq and 8-9whp. That's pretty substantial for something overlooked by many people.
I also want to experiment with my nitrous nozzle placement. Currently, it's mounted down by the air filter. Off the hit, torque seems a little low @ 700wtq. I think moving it closer to the throttle body should net 30-50wtq and maybe another 5-10whp.
Can't stop tinkering with this thing.
You will want the nozzle as close to the TB as possible and it will hit harder that's for sure.
Which filter are you running? The one I have has a build "quasi" velocity stack/bell mouth on it.
You will want the nozzle as close to the TB as possible and it will hit harder that's for sure.
Which filter are you running? The one I have has a build "quasi" velocity stack/bell mouth on it.
yeah going try it out.
Running the halltech filter. It has a bellmouth in it but the filter restricts flow no matter how you look at it. I’m going to buy a different filter that I can attach to the end of the new velocity stack for daily duties.
Running the halltech filter. It has a bellmouth in it but the filter restricts flow no matter how you look at it. I’m going to buy a different filter that I can attach to the end of the new velocity stack for daily duties.
Got you and I can see your concern.
Here is a pic of the Superbee 4.5" with "bellmouth".
So, I tried to run the velocity stack and the MAF did not like it. Put it on the shelf for later use. I will need to run SD if I really want to utilize it.
A little update on where the car stands at this moment…
I was driving the car to/from work last week and on my last day, I noticed a trail of oil leading to the center of the motor. I haven’t had time to lift the car and inspect it. It’s been raining for a few days. Should have some time later this week.
I decided to clean up some of the engine bay appearance. I wasn’t happy with the way everything looked.
So, I ordered up a few things:
Red, tall, Holley LSX valve covers
ICT Billet valley cover that deletes the PCV port
Got some quotes for powdercoating my Hi Ram. They wanted $400 plus and I wasn’t about to pay that.
Ended up buying some VHT wrinkle paint in black and painted the manifold. I think it came out pretty well.
Wrapped the intake pipe with “titanium” colored heat wrap.
Huge shout out to Anthony(Mordeth) for the hook-up with his vacuum pump. It’s in good hands, I promise.
I received it last week and started the mock up on Saturday. I ordered the fittings and braided hose.
I’m going to pull the vacuum from the valley cover with a baffled fitting from Jegs. I might have to add
another baffle of some sort if it pulls too much oil along with it. From everything I’ve read, this will be worth 10-30whp in the upper rev range. Of course, lots of variables can account for different gains. I have seen where some people didn’t gain anything. I’ll set it up to pull 11-13” of vacuum at WOT, which seems to be highly recommended.
I also found a great deal on a 4500psi Nano nitrous kit from another forum member. I snatched it up since you don’t really see those come up often. The regulator needed a little bit of love, so I cleaned it up and replaced the internal o-rings. The bottle was also a few years out of certification so I got it recertified. A nano system is definitely not need for the amount of nitrous I spray right now but it’s going to be nice to have in the future when I get around to building a nitrous motor for the car. I asked around a lot before I made the purchase and a lot of people love it and some people hate it. I guess I’ll find out how it works for me and go from there. I’m optimistic.
I’ll most likely be getting an electric water pump in the next few weeks to round off the end of the year. I’ll still be keeping an eye out for a set of ARH 2” headers but it’s not a huge priority right now.
After the vac pump and water pump I’m hoping to see 660whp and I’ll be shooting for right at 800whp on nitrous with a conservative tune.
damn man, so not really sure if its a seal or something worse?? that sucks.
i like the EWP and vac pump idea, and on the intake WRINKLE BLACK is my vote, my buddy did his in wrinkle black and it looks amazing!!! for 10 bucks you cant beat it. Ive heard nothing but good things about the nano stuff, just dont see it much unless its some serious setup
A little update on where the car stands at this moment…
I was driving the car to/from work last week and on my last day, I noticed a trail of oil leading to the center of the motor. I haven’t had time to lift the car and inspect it. It’s been raining for a few days. Should have some time later this week.
Excited.
I had an oil leak under the engine and it ended up being one of the small main cap side bolts was loose and working its way out. Mine was near the starter that was loose.
I had an oil leak under the engine and it ended up being one of the small main cap side bolts was loose and working its way out. Mine was near the starter that was loose.
That's good to hear! I did loosen the pan this last time I did a cam swap. It's possible I didn't tighten 1-2 bolts tight enough or at all. Last time I had this happen to me it turned out to be the oil filter. It has a small pin hole and was leaking out the side. Hoping for the best, for sure.
Finally got all the parts I needed to get the car back up and running. Plumbed the vacuum pumpand ran the car at idle and did not see any signs of a leak. Took the car around the block and saw some oil around the valley cover. Replaced the gasket and all seems well. It’s possible the oil was coming from the back side of the valley cover.
Hit the dyno tonight. Weather was a little bit cooler than the last time, but humidity was sky high. Ended up losing 3whp with the vacuum pump installed. Saw some small gains in the mid-range. Not sure what to make of the results but it is what it is.
Also had a chance to tune the Nano setup. Stayed on the 150 pill. Ended up making 835whp and 772wtq. Amazing results for sure.
Bad ***, bud !!!
That is odd about the vacuum pump.....how much are you pulling ?
Yeah, not sure what’s up. I did have the pass side VC and valley cover vented to atmosphere before. It’s possible that was actually working very well. Pulling about 13”-14” at WOT
Originally Posted by Da Z06
835whp and 772wtq is just sick!
Congrats! Extremely well done!
Thanks man!
Originally Posted by Pb82 Ronin
How well does the car hook at that power level?
Not very well last night. It was in the low 60s and light dew out in Mexico. I run 275/50/15s. May need to step up to a 275/60.
That NANO system is really cool. It sucks that the results are what they are. I'm sure that with all else being equal, the GZ pump is worth a handful of hp. Just shows that A>B testing is hard for us mortals since it is often that weeks go by and results are never as perfect as the internet makes them seem to be. Glad you posted up the results man.
08-23-2018, 10:20 AM
