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***LMR C7 700HP Package Upgrade***

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Old Apr 28, 2015 | 10:33 AM
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Default ***LMR C7 700HP Package Upgrade***

We just finished with this beautiful new C7, that was previously modified with another shop. This customer is a gear head, with great knowledge of hot rods and what it takes to make power. He has a goal of getting this car into the 9's at the drag strip, so we put together a combination of internal upgrades we think will provide him with his goal and make the power he desired! This car is equipped with an Edelbrock E-Force Supercharger which was provided by an earlier build, we upgraded the camshaft to a LMR Custom Grind Cam Kit with D.O.D delete suitable for the supercharged application, LMR custom torque converter, LMR 160* Tstat Housing, LMR C7 Catch Can System, topped off with our in house dyno tuning. The car runs like a beast, and should be a killer on the track!

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Old Apr 28, 2015 | 11:51 AM
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Am I the only one that thinks there is something majorly wrong with a car with a Hennessey HPE 650 package only putting 466hp to the wheels?!!
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Old Apr 28, 2015 | 01:19 PM
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Originally Posted by StingerBG
Am I the only one that thinks there is something majorly wrong with a car with a Hennessey HPE 650 package only putting 466hp to the wheels?!!
Does seem very low, but the eforce doesn't make very much boost so the number really doesn't surprise me. I'd guess maybe 5-6 pounds.

I'm curious how much boost they have it at after LMR did their work.
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Old Apr 28, 2015 | 01:51 PM
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Originally Posted by C7&7
Does seem very low, but the eforce doesn't make very much boost so the number really doesn't surprise me. I'd guess maybe 5-6 pounds.

I'm curious how much boost they have it at after LMR did their work.
Well I can understand that....but just the mere fact that it is an advertised 650HP package. Doesn't sound like they quite reached that 650hp mark. Even on their website, their own dyno's show the 650 package reaching 532rwhp with this package. 532-466 seems like quite a substantial margin of error. Oh, and what's the price of that HPE650 package? I believe it is somewhere around the $16k mark!!! You can have over 600rwhp from other shops such as LMR or Vengeance for a fraction of that price. Sounds like the mentioned customer made a wise decision the 2nd time around.

Last edited by StingerBG; Apr 28, 2015 at 01:56 PM.
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Old Apr 28, 2015 | 01:55 PM
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Yea well those "package" numbers are always horsepower at the flywheel, not the tire. 532 wheel is 630 ish through an auto at the crank. 466 is low as hell, but who knows, I'm sure the tune was a handheld tuner tune, boost was low, and the dyno matters. Numbers are numbers I suppose, but LMR really woke this one up with probably a pulley change, tune, and a cam.
Originally Posted by StingerBG
Well I can understand that....but just the mere fact that it is an advertised 650HP package. Doesn't sound like they quite reached that 650hp mark. Even on their website, their own dyno's show the 650 package reaching 532rwhp with this package. 532-466 seems like quite a substantial margin of error.
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Old Apr 28, 2015 | 02:11 PM
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Originally Posted by C7&7
Yea well those "package" numbers are always horsepower at the flywheel, not the tire. 532 wheel is 630 ish through an auto at the crank. 466 is low as hell, but who knows, I'm sure the tune was a handheld tuner tune, boost was low, and the dyno matters. Numbers are numbers I suppose, but LMR really woke this one up with probably a pulley change, tune, and a cam.
I'm no idiot. I know the package #'s are flywheel horsepower. But as the video shows, he had the Hennessey HPE650 package on the car....which means Hennessey did the work. A shop such as that should be able to get way more than 466whp out of a supercharger and custom tune. Especially for 16 grand!! All I am stating is that it seems as though the customer got ripped off the first time around. Hennessey themselves dyno'd a stock AUTO stingray at 399.2whp. You're telling me that 16k got this man (or woman) an extra 66whp and that's ok?! Even if the customer had to have a conservative tune to account for 91 octane, he should still be getting close to or over 500whp.
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Old Apr 28, 2015 | 02:15 PM
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But then again I guess one could argue that the extra cost for Hennessey is in the warranty...however that whp # is still WAY too low compared to their own advertised output for that specific package.
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Old Apr 28, 2015 | 02:53 PM
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Originally Posted by StingerBG
Well I can understand that....but just the mere fact that it is an advertised 650HP package. Doesn't sound like they quite reached that 650hp mark. Even on their website, their own dyno's show the 650 package reaching 532rwhp with this package. 532-466 seems like quite a substantial margin of error. Oh, and what's the price of that HPE650 package? I believe it is somewhere around the $16k mark!!! You can have over 600rwhp from other shops such as LMR or Vengeance for a fraction of that price. Sounds like the mentioned customer made a wise decision the 2nd time around.

Not sure if you priced 600 RWHP lately but its much more than a fraction of the price. 10k is a good starting price for that HP range LOL. Either way 16k is still over priced for what he got.
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Old Apr 28, 2015 | 02:57 PM
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Originally Posted by jerry07dx
Not sure if you priced 600 RWHP lately but its much more than a fraction of the price. 10k is a good starting price for that HP range LOL. Either way 16k is still over priced for what he got.
662 rwhp cost me $13K.
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Old Apr 28, 2015 | 08:28 PM
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Originally Posted by officermartinez
662 rwhp cost me $13K.
Yikes,
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Old Apr 28, 2015 | 08:46 PM
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A super charger will cost close to 10k installed. Add headers and a few more goodies and 13k is about what 650 RWHP will cost.
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Old Apr 28, 2015 | 08:46 PM
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Originally Posted by rob03zo6
Yikes,
Yikes??

That's pretty close for blower, headers, meth, installed and tuned.

His car is an auto if you're wondering why it didn't hit the magic 700 number.
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Old Apr 28, 2015 | 09:15 PM
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Yikes.. kind of, yes. It does cost a penny or two to "play." I am very happy with the install. Make no bones about it, 662 rwhp is plenty for the street. Think about it this way. My C7 came from the factory rated at 460hp (crank hp). After mods, if I figure in a 15% penalty for my drive line loss with my automatic transmission, that puts me at 761hp (crank hp).. 662 rwhp x 15% = 761.3 crank hp. At the crank, after my mods, I am roughly 300 more hp over my stock engine. That's not too shabby considering my car is a daily driver.

I've already posted my install bill. So here's a brief break down for what it cost me to get where I am at..

Headers, ECS Supercharger, ECS Alky Meth Kit - $7,900
LMR revised catch can / breather - $1100
Installation / Tune @ LG Motorsports - $4,000

If you can find your particular parts cheaper, that's great. At least that gives you an idea of a ball park figure. Some people prefer different headers, or blowers, etc.. If this is something you are considering, I urge you to do your homework. A 760 crank hp car is a small investment. But, I admit, the payoff of owning such a car is a wonderful experience.

Last edited by officermartinez; Apr 28, 2015 at 09:17 PM.
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Old Apr 28, 2015 | 10:16 PM
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Agreed with the previous posters. If you think $13k for 650whp is 'yikes' territory, be prepared to pass out for breaking the 900whp barrier (before the N2O) with any of the fine shops here.
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Old Apr 28, 2015 | 11:28 PM
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Originally Posted by officermartinez
662 rwhp x 15% = 761.3 crank hp.

Assuming a 15% powertrain loss, I calculate using the following formula.

662 rwhp / .85 = 778.82 crank
778.82 crank x .85 = 662 rwhp

In the video above:
641 rwhp / .85 = 754.12 crank
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Old Apr 29, 2015 | 11:40 AM
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Originally Posted by jerry07dx
Not sure if you priced 600 RWHP lately but its much more than a fraction of the price. 10k is a good starting price for that HP range LOL. Either way 16k is still over priced for what he got.
Last I checked ... $10k is still a fraction of $16k ...5/8 to be exact

Last edited by StingerBG; Apr 29, 2015 at 11:56 AM.
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Old Apr 29, 2015 | 11:56 AM
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Originally Posted by jerry07dx
A super charger will cost close to 10k installed. Add headers and a few more goodies and 13k is about what 650 RWHP will cost.
Now officermartinez, IMO, got his money's worth!!! $13k is actually pretty reasonable for the rwhp #'s he's getting...especially out of an auto! I'm looking at a package from Vengeance Racing (not trying to hijack LMR's thread), but for $9500 I can get their 690hp (crank) package which includes choice of supercharger, headers, plugs and plug wires, install and custom tune. I'm sure LMR is close to the same lines on those prices and I would definitely go to LMR if they were closer to me. May even add meth and have them tune it to get me just over the 600rwhp mark but still keep it driveable and somewhat safe. I feel this is very achievable since I have a M7 and 93 octane is available everywhere here in VA. I will probably also get a LMR breather catch can to go along with everything so I'd say I'm looking close to the $12-13k range as well.
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Old Apr 29, 2015 | 09:57 PM
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Man..... I personally saw this car make 538 rwhp on the dyno last Fall. It even made 513 after a few pulls once it was heat soaked. I guess there are a number of reasons why it could have dropped into the mid 400's such as a mechanical problem or even being worked on/tuned by someone else after it left the original builder, but I hope a good, reputable shop like LMR wouldn't sabotage it to make the low number just to put down another shop and/or make themselves look better. Like I said it could have been a number of reasons but I guess making a video like that in the first place says enough.....
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Old May 10, 2015 | 11:01 PM
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Originally Posted by dngriffi
Man..... I personally saw this car make 538 rwhp on the dyno last Fall. It even made 513 after a few pulls once it was heat soaked. I guess there are a number of reasons why it could have dropped into the mid 400's such as a mechanical problem or even being worked on/tuned by someone else after it left the original builder, but I hope a good, reputable shop like LMR wouldn't sabotage it to make the low number just to put down another shop and/or make themselves look better. Like I said it could have been a number of reasons but I guess making a video like that in the first place says enough.....
We have never been in business to bash other shops. We let our product speak for it self. With that being said, yes, the customer paid a pretty penny for the 650 package only to gain 50-60rwhp over stock and actually lost hp above 5200rpms over a stock car. We were very surprised with how bad the baseline graph looked. All we know is how the car base lined when it came to our shop. No need for us to ask any questions, just to do our job and make the car perform like the customer asked.

Same Pulley setup stayed on the car, so boost levels actually dropped off a bit when we made the engine more efficient. Once customer gets used to car and when better weather comes around he does plan to pulley her up.

We know what are packages can do and we prove it on a weekly basis. Our customers road race, drag race, and even the occasional roll race in "Mexico" to show our results, more than just "dyno numbers".
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