12.6 @ 117.99 today
 

2.16
8.35 @ 90.8
12.63 @ 117.99

First time out with the ZR-1, I've only had the car a few weeks. The car has a DRM 475 HP package, without the headers. The DRM work was done about 20 years ago. A few years ago Marc Haibeck looked the car over and fixed a variety of issues, and installed a newer computer chip. The bulk of the mods are:

-ported plenum and injector housing
-ported intake ports on cylinder heads
-larger intake cams

It's still using the stock exhaust manifolds, so I'm sure that is handicapping the porting and intake cams to some degree.

The car made 365 RWHP on DRM's dynojet 248 in 2001.

I was beyond pleased with the car today. My lack of ability as a driver is pretty apparent in the 60 foot time and the large disparity between ET and MPH, but I was happy as could be with the cars performance. The car is something of a family heirloom, and while I wasn't Sunday driving the car, I wasn't beating it to death either. I honestly think the car would have gone 12.30 @ 120 if I'd asked it to. I feel like a little more aggressive launch, and holding each gear until 7000-7100 would cut a fair amount from the ET. I might decide to beat on it to a greater extent later, but for now I'm more than content with what the car achieved.

Just had an awesome time, and was amazed at the MPH the car turned; so I wanted to share.

Thanks!

Re: 12.6 @ 117.99 today
 

C4 ZRs don’t typically excel at 60’ times, but they do hustle at the big end.

Re: 12.6 @ 117.99 today
 

The car picked up ~28 MPH from the 1/8 to the 1/4. That is a GIANT number for a mid 12 second car. Picking up 28-30 MPH on the back half is much more typical of a 10 second car. I was more impressed with that than anything.

Re: 12.6 @ 117.99 today
 

That's typical. It's why I say that the ZR is like Secretariat not a
quarter-horse. TOP END.

Re: 12.6 @ 117.99 today
 

Here's some video from the track day.

https://www.youtube.com/watch?v=VUJvyOGHHAM

RE: the occasional wonky video clips - you'll have to talk to one of my ace camera operators, who apparently doesn't realize that turning a cell phone sideways while taking video is an option.

Re: 12.6 @ 117.99 today
 

Hi thanks for that you did great my 1st time out i got a 13.5 and 13.9was my wosred run with a stock car my engine now has injector boses made smaller Marc Haibeck chip aluminum flywheel and headers which I made and 3"exhaust our racing season is over hopefully you can get a lot more racing this season here is a couple of my time slips for comparison I'm changing gears at 6500 rmp the slips are form two different tracks I'm leaving the line at about 4000 rpm I slip the clutch as I don't want to break a axle the 12.56 is my best time so far

Glen Attachment 7461Attachment 7462

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