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Ok its next year, and the motors about to go back on the dyno, with new profiled cams to make power up to 9500 rpm, ( we flattened off between 8000-8500 on the stock cams) also a bump in compression to over 15:1
Wish us luck and come see us at speedweek 2015 as the ZR1 is about to be King of the salt. all we need is 1/2 mile per hour improvement from last year to set a new record.
Dave
This is so awesome Dave is this the motor going 9k+ on youtube on the engine dyno? Ill re-read the thread before I ask too much. Just wanted to mention it here but if you guys get videos from the runs Id be happy to try and edit some for you and post them if you were ok with it? I love posting my car videos on instagram to get the zr-1 the spotlight it deserves (over 90k likes in one day yesterday! ) and your car definitely deserves some attention !
This is so awesome Dave is this the motor going 9k+ on youtube on the engine dyno? Ill re-read the thread before I ask too much. Just wanted to mention it here but if you guys get videos from the runs Id be happy to try and edit some for you and post them if you were ok with it? I love posting my car videos on instagram to get the zr-1 the spotlight it deserves (over 90k likes in one day yesterday! ) and your car definitely deserves some attention !
I have no issues what so ever If you want to help with video exposure. We have been running the car at 8500. We have been building hp at a linear rate up to 8000 then it breaks over but still builds to 8500. The new cam profiles will hopefully maintain the linear rate up to 9500. However gears in the Jericho are really set up for shifting at 8500 and that is probably where I will continue to shift at least in the first 3 gears.
One of the biggest issues is the density altitude on the salt runs about 8000 feet, so the thin air is a bitch for a naturally aspirated motor. So bumping the compression from 14:1 to over 15:1 should help.
Last year we ran very close to the record with dismal salt conditions, there were soggy areas in the track and I could really feel it. On one run it had rained 30 minutes prior at the 5 mile, and when I drove into that area of high humid air it felt like a wall!! So good track this year will really make the difference
Dave
Last edited by Daves obsession; 06-26-2015 at 11:53 PM.
The car runs in the GT or grand touring. It has a C motor with is from 305-372 CI and is naturally Aspirated. So it's a CGT class. The only modification allowed is to the Hood. Current record is 230.450. Held by Duffin in a 1987 C4. With a nascar motor.
I want the record with a number matching corvette motor so I picked the Lt5
Last edited by Daves obsession; 06-28-2015 at 09:15 PM.
What is your date for running this year? Been raining a lot lately. :/
Could you gain any mph w/some underbody aero? A pan?
We are running Aug 7-14 and yes the salts wet right now, the Test and tune had a course set up a few days ago but canceled the event. we have two additional events this year in sept and oct. if Aug rains out. Very important to safety to have a good track.
the car is cleaned up in all areas that the regs will allow, " Panning not allowed in the GT Class". We spent a wad of cash in the wind tunnel last year and learned a few things ( secret stuff) I will say that the wide butt of the ZR1 did not hurt the aero.
" Panning not allowed in the GT Class". We spent a wad of cash in the wind tunnel last year and learned a few things ( secret stuff) I will say that the wide butt of the ZR1 did not hurt the aero.
Dave
Copy that. I was looking at a pic of the underside of the car and was wondering; if there were a gain to be had (aerodynamically), I wonder if you could pull a "fast one" by having custom mufflers made, such that the muffler case fills the space on either side of the spare tire carrier, effectively flattening the under side of the car in that area...but they're not pans...they're the mufflers. Just an idea I had.
I may venture out to watch you run. I'd LOVE to see that car in person!
Tom we hang a set of dummy stock mufflers in that hole on each side but that's the best that can be done the tech guys look for any changes that would effect aero from a stock application
Speedweek has been canceled due to poor Salt conditions, Good Salt was found for the first two miles then it became mushy and thin due to rains in early July. Team ZR1 is now planning to attend World of Speed September 12-15 and is praying for Hot Dry days.
I would like to give a special shout out to Jerry's Gaskets for their support of our efforts. We are running all his Gaskets and seals Plus his Timing Chains in the new Build.
Corey Henderson did a fantastic Job unlocking the remaining potential of the LT5 372 motor. The new custom cams have allowed the engine to take advantage of all Head, intake and exhaust work. The Hp curve is now a linear rise to 8500 and we have added significantly to the top end. The motor is as lumpy on the bottom end as a bowl of mash potatoes mixed by a one armed man on a slick counter.
Last edited by Daves obsession; 07-21-2015 at 01:32 AM.
06-26-2015, 08:45 PM
Dave is this the motor going 9k+ on youtube on the engine dyno? Ill re-read the thread before I ask too much. Just wanted to mention it here but if you guys get videos from the runs Id be happy to try and edit some for you and post them if you were ok with it? I love posting my car videos on instagram to get the zr-1 the spotlight it deserves (over 90k likes in one day yesterday! ) and your car definitely deserves some attention ! 
