Jessrayo ZL1 build.

[FINALLYSATISFIED]

Originally Posted by jessrayo

The break in is done and the dyno run is up. 752 hp, 745 tq. Can't wait to get some seat time and see how it feels on the track.

Waiting on an engine oil cooler but other than that it is pretty much together.

750+ Hp? I wonder how that feels behind the wheel.

[LuckyZL-1]

I'm trying to get my hands on a used one so I can trick it out as well and go to the track with it.

[Blainne]

You consider going NA or Turbo instead to keep the temps down?

The S/C on heavily modified car turns into a top mounted HEATER after laps at the track.

A 550 rwhp car > 700 rwhp car at the track if the 700 rwhp can't use all the power consistently. Reason why the ZL1 won the comparisons VS the GT500. After 1 lap the GT500 was heat-soaked and the brakes were done.

Not sure what your end goal is... track car or 1/4 mile car or 1 mile track.

[jessrayo]

Originally Posted by Blainne

You consider going NA or Turbo instead to keep the temps down?

The S/C on heavily modified car turns into a top mounted HEATER after laps at the track.

A 550 rwhp car > 700 rwhp car at the track if the 700 rwhp can't use all the power consistently. Reason why the ZL1 won the comparisons VS the GT500. After 1 lap the GT500 was heat-soaked and the brakes were done.

Not sure what your end goal is... track car or 1/4 mile car or 1 mile track.

No way on the NA, once you have experienced a boosted V8 it is hard to go back to NA. I think turbos have the same heat issues as the superchargers but the supercharger systems are more common to work with. Turbos are pretty exotic to get competent work done on them, there are a ton of good mechanics that can work with the GM/Eaton supercharger systems.

I agree that consistency is always the key.... But if Ford tuned back 100 horses out of the GT500 to gain consistency it would have been slaughtered in the comparison. The ZL1 was extremely consistent in stock form but that tells me there was time left on the table. I will get this ZL1 working consistently and I'm confident it will eventually run 45 minute sessions in 100 degree temps without any excessive heat parameters and it will still make 700 or more whp. That is my main goal.

I want the ZL1 to do it all but I'm biasing the components to be a killer street legal road racer on open track days. To me that is the hardest target to hit. My local track is dominated by Porsche's and I like that even with mods, my car cost half of what theirs does. My next priority is top speed or the 1 mile venue. I think I should be able to do 190 or more in the Texas mile. And lastly, I would like to post a respectable 1/4 mile time before it is all done, when I say respectable, anything in the 10's is fine with me. I don't think 10's should be difficult with the horsepower I have already.

[fourcammer]

Originally Posted by jessrayo

I had all the mechanical parts upgraded at ADM performance in Dallas. To the best of my understanding the car is running a Lingenfelter throttle body. I got the idea he changed it again after my track day. Andy assures me that I will not have throttle body issues again. The heat exchanger for the supercharger is a replacement unit that is about twice as large as the stock unit. It was engineered by Ron Davis, a radiator builder that ADM knows and he assures me it has the best cooling properties available to date. Right now the system has about 3 gallons capacity.

I assume from your avatar that you are tracking your car. What are you doing for tires?

the question I have is does the heat exchanger you have cooling fans?

[jessrayo]

Originally Posted by fourcammer

the question I have is does the heat exchanger you have cooling fans?

No fans on my exchanger, I need to get some better video equipment but the car spends a lot of time above 100mph. If you watch the video you can see on the hard laps I only use 2 gears 3rd and 4th for all of the track except the longest straight and I do not even think I was getting to 5th on this video. Every corner is done in 3rd and I shift between 90 and 100mph to 4th. Fans just get in the way at those speeds....

[jessrayo]

Originally Posted by FINALLYSATISFIED

750+ Hp? I wonder how that feels behind the wheel.

It feels really good!!

[islander033]

Originally Posted by jessrayo

I'm really surprised that no one is giving me crap about my drag race times....
The engine ran flawlessly and I didn't notice any heat issues despite running several runs and pulling directly in the line-up to go again. Did 3 runs almost back to back at the end of the night and 2nd of those 3 had my best time.

Sweet ride!

As for your above post:

1-I'm not surprized at your ET's. More ass time at the strip and stickier tires with improve that.

2-I am a bit surprized that you don't trap better than 126mph with all your power...

[jessrayo]

Originally Posted by islander033

Sweet ride!


2-I am a bit surprized that you don't trap better than 126mph with all your power...

I think the speed will come up a lot if I put drag radials on the car because I never could keep the throttle on throughout a run. Many times I would be sitting in 2nd gear with the traction control almost turning the engine off watching the car in the other lane pick up 3 car lengths while the electronics stopped my wheel spin then I would run them down and fly by at 120+ mph. The only runs I made where the engine wasn't surging off and on under traction control were with total defeat of the traction control and then it felt like I was blipping the throttle in neural and literally spinning completely uncontrolled throughout the first 3 gears then it would bog a little and hook in 4th. I tried the "no nannies" twice with 13 second results and less than 120 speeds, then I put it back in PTM 4 and bogged the launch. I'm sure if I could stay in the throttle I will get a lot better trap speeds. I have not ordered drag radials yet because I've been told that I will have to buy a new clutch (my ZR1 clutch wasn't cheap) in a short period of time if the tires start to bite and the clutch has to modulate the full torque load. My car has been a bit of a money pit for the last month....lol.

[jessrayo]

Andy was gracious enough to send me some pictures of my car. The 2300 blower is now installed and so is the trunk mounted water reservoir for the supercharger. He replaced my clutch with a Mantic unit because the ZR1 model was already starting to fade a little. That was his biggest delay was waiting for the new clutch to get shipped.

Tomorrow is the dyno run and hopefully I drive it home Saturday!

[mlee]

SUPER nice, Is the HX pump in the trunk as well?

[LuckyZL-1]

Oh man that thing is a gonna fly at the mile!!! Can't wait to see it and meet up with you guys. Nice setup! Andy is certainly the man!!

[jessrayo]

The dyno run is up but I still haven't picked-up the car. I'm planning on getting it on Wed this week. The first motor sport event I'm going to run is at the drag strip on 6 Sept 13. I still have not even got a shipping notice for my Weld wheels and may not have them. If that is the case I may try some second gear launches on the road racing tires.... (hope that brand new Mantic clutch holds up).

Just FYI on the dyno sheet, the bumps in torque early in the pull are due to wheel spin and the car doesn't actually make more than about 820 ft lbs. Only 820.... I can't wait to drive it again....lol.

[silver surfer ZL1]

eagles canyon track day is coming up september 7th via five star ford. alot of mustangs will be there aswell as mine and a couple other zl1's if you get a chance to register before all the spots fill up:

http://eaglescanyon.com/httpdocs/2008/payments.php