![]() |
#1 |
![]() Join Date: Apr 2018
Location: Raleigh, NC
Posts: 40
|
![]()
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!
__________________
1991 ZR-1 #769 - Turquoise / black - DRM 475 - 1993 Mustang - White / Black - Twin Turbos - Other Stuff - |
![]() |
![]() |
![]() |
#2 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,696
|
![]()
C4 ZRs don’t typically excel at 60’ times, but they do hustle at the big end.
__________________
[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
![]() |
![]() |
![]() |
#3 |
![]() Join Date: Apr 2018
Location: Raleigh, NC
Posts: 40
|
![]()
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.
__________________
1991 ZR-1 #769 - Turquoise / black - DRM 475 - 1993 Mustang - White / Black - Twin Turbos - Other Stuff - |
![]() |
![]() |
![]() |
#4 | |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,696
|
![]() Quote:
quarter-horse. TOP END.
__________________
[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
|
![]() |
![]() |
![]() |
#5 |
![]() Join Date: Apr 2018
Location: Raleigh, NC
Posts: 40
|
![]()
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.
__________________
1991 ZR-1 #769 - Turquoise / black - DRM 475 - 1993 Mustang - White / Black - Twin Turbos - Other Stuff - |
![]() |
![]() |
![]() |
#6 | |
![]() Join Date: Mar 2015
Location: New Zealand
Posts: 384
|
![]() Quote:
Glen 20180513_231318.jpg20180410_191543.jpg Sent from my SM-G930F using Tapatalk |
|
![]() |
![]() |
![]() |
|
|