LMR C7 Pulls Off a 175.5-mph Half-Mile
#1
CorvetteForum Editor
Thread Starter
LMR C7 Pulls Off a 175.5-mph Half-Mile
It’s now becoming crystal clear that the guys over at Late Model Racecraft are pulling off some impressive performance upgrades for Corvettes.
One of their most recent showings includes what's believed to be the fastest quarter- and half-mile speeds to date for a C7 at 148 mph and 175.5 mph, respectively ... on boost only.
The feat was accomplished on street tires at the Texas Half Mile, which you get a sense of from the lack of traction. The team says they also had some problems shifting it at higher rpms, which made for some very long shifts.
See the video on the Corvette Forum blog.
#3
Supporting Vendor
#6
Supporting Vendor
This car has the factory Transmission and Rear end in the car.
__________________
Worlds Quickest C8 Corvette 8.83@160MPH
FIRST C7 Corvette in the 7's & 9's
FIRST C7 Corvette in the 7's & 9's
2019 ZR1 LT5 8.874 @ 155
Current C7 World Record Holder 7.55 @ 184 MPH
Quickest and Fastest GEN5 LT Powered Vehicle
LMR1200HP Supercharged C7 8.84 @ 160
LMR1200HP Twin Turbo C7 9.35@155mph-2014
2 TIME OUTLAW DRAG RADIAL LSX CHAMPION 2008/2010
9.47 ZR1 Corvette-2009
LATE MODEL RACECRAFT
713-466-9900
LateModelRacecraft.com
Too many PMs, please call or email instead, thanks!
Current C7 World Record Holder 7.55 @ 184 MPH
Quickest and Fastest GEN5 LT Powered Vehicle
LMR1200HP Supercharged C7 8.84 @ 160
LMR1200HP Twin Turbo C7 9.35@155mph-2014
2 TIME OUTLAW DRAG RADIAL LSX CHAMPION 2008/2010
9.47 ZR1 Corvette-2009
LATE MODEL RACECRAFT
713-466-9900
LateModelRacecraft.com
Too many PMs, please call or email instead, thanks!
#7
Supporting Vendor
It is a LMR 416ci engine with YSI supercharger making over 1000rwhp on boost only. Also has nitrous to push it close to the 1300rwhp marker when used.
There is another 1/2 mile event coming up in a little over a month. We are going to see if we can have our twin turbo system installed for the event to see just how fast a C7 Corvette can go with 1300 plus RWHP!!
There is another 1/2 mile event coming up in a little over a month. We are going to see if we can have our twin turbo system installed for the event to see just how fast a C7 Corvette can go with 1300 plus RWHP!!
#9
Melting Slicks
what DI injectors are you using? something in house or obtained where?
#10
Tech Contributor
Member Since: Jan 2006
Location: Saint Louis MO
Posts: 4,761
Likes: 0
Received 218 Likes
on
110 Posts
St. Jude Donor '14-'15
Fairly sure the injectors are still stock unless they changed it recently - they're obviously using a larger fuel lobe on the cam and most likely a different fuel pump (or BAP).
#11
Melting Slicks
Im pretty familiar with these cars, we don't need guessers cluttering up threads.
#12
Melting Slicks
through the grapevine, i thought i recalled someone stating the cars ran out of fuel around 650 or 700hp. Not sure how accurate that is however.
If the fuel system is still stock, then awesome.
But if they upgraded it, then the only 3 options that i know of are a larger volume sending pump from the tank...
a higher pressure or higher volume DI pump at the motor...
Or larger holed, or more quantity of hole, DI injectors.
If I'm mistaken, please correct me LMR.
If the fuel system is still stock, then awesome.
But if they upgraded it, then the only 3 options that i know of are a larger volume sending pump from the tank...
a higher pressure or higher volume DI pump at the motor...
Or larger holed, or more quantity of hole, DI injectors.
If I'm mistaken, please correct me LMR.
#13
Melting Slicks
Last i had heard,
extending the fuel injection duration, via a longer lobe, had negative consequences of cylinder wall scorching as a possibility, as well as a few other factors that seemed to amount to... increasing the injection duration times werent the simple fix.
However, this could also be wrong, because if the cars do cap at 700hp... then these guys obviously did something to remedy it.
extending the fuel injection duration, via a longer lobe, had negative consequences of cylinder wall scorching as a possibility, as well as a few other factors that seemed to amount to... increasing the injection duration times werent the simple fix.
However, this could also be wrong, because if the cars do cap at 700hp... then these guys obviously did something to remedy it.
#14
Maybe Try to be less of a dick in your post next time.
#15
Race Director
Member Since: Jul 2007
Location: Texas Hill Country
Posts: 10,763
Received 2,379 Likes
on
1,238 Posts
irun4cops, you sure have a lot of questions and uncertain statements for someone who is "familiar with these cars."
#16
Melting Slicks
Actually, for your information, a BAP is an option. They still have a pump in the tank and until you've actually worked on a c7 (notice I didn't say own one, but worked on one) you can get down off your almighty high horse of assumed knowledge. People are on here to learn, not to hear someone talk down to someone because they think they know more than them. Theta actually works on his car, not just talk about it.
Maybe Try to be less of a dick in your post next time.
Maybe Try to be less of a dick in your post next time.
1. the amount of FLOW the in tank pump provides the the DI pump up at the motor (if the in tank pump doesnt flow enough fuel, then the DI high pressure pump at the motor can be starved of fuel)
2. The DI high pressure pump itself, can be upgraded to provide more pressure and/or flow.
3. The injectors... the size of the holes or the quantity of holes, allowing for more flow.
those are the only way to upgrade this fuel system.
BAP the way you are describing it pertains to the in tank pump, and adding to its flow.
Sure its a viable option, but in the past, with the 3 high hp cars i have had, i shy'd away from boostapumps as i was having cavitation issues with them.
perhaps those experiences I've had have me a little unwilling to entertain boostapumps as a good solution.
In addition, if the injectors or the DI high pressure pump at the motor ARE the bottlenecks to the system, then a boostapump up stream of them back by the tank, isn't going to change the amount of fuel pushed into the chamber... only IF the in tank pump is the weakest link, would a boost a pump be of any use whatsoever. If thats the case, then a boostapump is an option, but i will be upgrading the in tank pump... in my car to a larger one.
However, most people, when the refer to boostapumps on this c7 setup, are speaking out of ignorance, as they believe a boost a pump can be mounted between the high pressure pump at the motor, and the injectors to BOOST fuel pressure at the injector where it matters.
This is incorrect, one cant be mounted here, and thats what i was referring to.
The term boostapump, on the C7, if utilized, is more specifically an upgrade of FLOW pump... so that the DI high pressure pump at the motor doesnt starve... IF it is.
Hopefully by now its dawned on you... i work on these cars.
Sorry to sound rude if i did... i just came to a specific thread to ask a question to a specific person... who does build the cars.
i could guess all day long and try to sound intelligent also...
but rather than do that.. i asked a question.
When others started talking just to talk... i demonstrated i can do the same thing. But at the end of the day LMR has the answer and none of you do.. am i correct?
So lets wait for them.
Last edited by irun4cops; 06-09-2014 at 08:39 PM.
#17
the way you are describing the boostapump... is an additional inline pump to the in tank pump... which I'm aware is there. My above posts states that it is 1 of 3 possible bottlenecks in the fuel system when one goes to upgrade it... 1. the amount of FLOW the in tank pump provides the the DI pump up at the motor (if the in tank pump doesnt flow enough fuel, then the DI high pressure pump at the motor can be starved of fuel) 2. The DI high pressure pump itself, can be upgraded to provide more pressure and/or flow. 3. The injectors... the size of the holes or the quantity of holes, allowing for more flow. those are the only way to upgrade this fuel system. BAP the way you are describing it pertains to the in tank pump, and adding to its flow. Sure its a viable option, but in the past, with the 3 high hp cars i have had, i shy'd away from boostapumps as i was having cavitation issues with them. perhaps those experiences I've had have me a little unwilling to entertain boostapumps as a good solution. In addition, if the injectors or the DI high pressure pump at the motor ARE the bottlenecks to the system, then a boostapump up stream of them back by the tank, isn't going to change the amount of fuel pushed into the chamber... only IF the in tank pump is the weakest link, would a boost a pump be of any use whatsoever. If thats the case, then a boostapump is an option, but i will be upgrading the in tank pump... in my car to a larger one. However, most people, when the refer to boostapumps on this c7 setup, are speaking out of ignorance, as they believe a boost a pump can be mounted between the high pressure pump at the motor, and the injectors to BOOST fuel pressure at the injector where it matters. This is incorrect, one cant be mounted here, and thats what i was referring to. The term boostapump, on the C7, if utilized, is more specifically an upgrade of FLOW pump... so that the DI high pressure pump at the motor doesnt starve... IF it is. Hopefully by now its dawned on you... i work on these cars. Sorry to sound rude if i did... i just came to a specific thread to ask a question to a specific person... who does build the cars. i could guess all day long and try to sound intelligent also... but rather than do that.. i asked a question. When others started talking just to talk... i demonstrated i can do the same thing. But at the end of the day LMR has the answer and none of you do.. am i correct? So lets wait for them.
Last edited by NastyChevelle; 06-09-2014 at 08:51 PM.
#18
Tech Contributor
Member Since: Jan 2006
Location: Saint Louis MO
Posts: 4,761
Likes: 0
Received 218 Likes
on
110 Posts
St. Jude Donor '14-'15
My sincerest apologies for offending you, whoever you are.
Call Reid @ LMR tomorrow instead of resurrecting old threads. Thanks.
#19
Tech Contributor
Member Since: Jan 2006
Location: Saint Louis MO
Posts: 4,761
Likes: 0
Received 218 Likes
on
110 Posts
St. Jude Donor '14-'15
For someone who doesn't like people "guessing" about the platform he knows quite well, he does surely have a lot of... well, guesses.
Oh well, sorry Reid. It takes all kinds...
#20
Melting Slicks
sorry theta, sincerely.
Most people on these threads don't have a clue.
As for chevelle up there, i do own and build the cars. But i have a feeling no matter how much talking i do, you don't want to hear it.
So have a great night.
Most people on these threads don't have a clue.
As for chevelle up there, i do own and build the cars. But i have a feeling no matter how much talking i do, you don't want to hear it.
So have a great night.