3.6 KB vs VMP Gen3R test
- Thread starter 2011 gtcs
- Start date
Solid power but still not 1200 and I do not put much stock into non Dynojet numbers.
What is your CR?
The nonsense with the proprietary TB I had one of the first out in the public and gave up waiting for them to figure this out. Switched to KB 3.6 and picked up 60 whp with same setup.
What T/B are you running with the KB? What is the setup before and after graph?
KB twin 75
They make an adapter to run the Twin 75 but I understand the T/B struggles as I had the same issue. My original 173 and KB 168 had problems. The Version 2 of the 173 works well.
I don't see anything about "max" or "maximum" in those KB posted chart numbers, I do see "peak" for the pulley combinations tested on that chart. <<<From a casual observers standpoint, I would guess that "other" pulley combinations are available in the GT500 world, but not every single combination is on that list and "other/smaller" pulley combinations have been tested and that is where the owner himself from KB is stating his dyno test facts about rpm's, etc. from "other" tests over the years.
My personal experience with KB has been Great since 2009 when I got my Super Snake back from Shelby, it still has the tiny 2.8 that Shelby installed as part of the 725 upgrade back then. I have never had any issues with the car, but have called Matt at first and now Rick to discuss general information and gain knowledge, they are always willing to help and share information.
I have never measured my original pulley or played with pulley swaps, I don't want to take off my cool pulley that is an eye-catcher when I open the hood at a car show.
R
I am asking the KB representative in this thread what the max RPM is for the KB.
If I’m not mistaken, the 3.6 LC has made a lot more than 1,200 whp on several cars. Didn’t Evolution Performance crack 1,300 whp and run 8’s with that blower like 10 years ago? I also thought there’s a cranked up 3.6LC on a coyote making 1,500 hp (?)
Doesn’t Quade (on this site) run 8’s in a full weight daily driven stick shift (stock TR6060) car with a 3.6LC? He may have a bigger KB than that but I thought that’s what he’s running.
Google searched for 30 seconds; here’s a couple:
-No, I don’t have the dyno sheets and I don’t know what kind of dyno.
-pretty sure the kB blowers are rated to 18k RPM. As was said before... if you want more boost than 18k can give you on a particular size blower...you just step up to the next size and you’re good to go. You aren’t forced to overspin it.
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Yes, he will have to answer that. I see large boost numbers in a previous post. Me personally, I would rather not have to spin the blower (any blower) into oblivion to get a desired higher boost level. It is nice to spin a blower at lower speeds and gain the boost desired while also keeping the heat down on that lower spin.......but that is just me. I guess my question, once I determine what boost level I want to achieve.........What blower can I buy to get to that desired boost/power level with the lowest spin and heat creation?
My overall view of it..........I do not want my blower to have to run a wide open sprint every time I press the right pedal for power, I would rather that it is sitting back in a Lazyboy with the foot rest up while drinking a sweet tea and making that same power level. <<<And then if there is a larger demand, it is more than capable to step up to the challenge.
R
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Says 18k max at the bottom of the bullets
Shelby GT500 HP BOOST GUIDE 2.8, 3.2, 3.6, 4.2, 4.7 | Kenne Bell
Yet not a single dynojet graph making 1200+ sae. Kinetic motorsports claims 1221 on a DJ with a 3.6 but no graph. Quade has a 4.7 KB. The evolution car make 1150 on a MD and the trap speed confirmed it probably made that or less. I am sure a cut cowl, big gun feed 3.6 could make big power in a 12:1 + combo running no accessories, lots of rpm, etc... However so could the 2.65 as it’s making 1250+ with “street strip” combos. Something I have not seen out of the 3.2/3.6/3.4/2.9.
That’s where you are wrong. It’s not about desired boost levels. It’s about your desired power goal and maximizing average power in a given rpm range. The heat argument from over spun 2.65s has no validation. The Weir racing car stays below 107IAT2 spun to 27k over a mile for example. Lazy boy is a perfect word to describe a under-spun twinscrew. That’s why a overspun 1100hp 2.65 will gap a 1100hp under spun 4.7 car all day with everything else being equal.
Die hard tvs fan^^ lol. you keep on saying tvs is the best ****ing blower, kb, whipple tvs they all are good blowers, depends on your goals and your build. If someones has the money to go all out, 4.5 whipple or 4.7kb would be the way to go or even turbos. Doesnt make sense to spend all that money a motor and have tvs. For 1200rwhp or more i wouldnt want a tvs. 4.7kb or 4.5whipple would destroy a tvs.
And you need the secret sauce version for that much hp
Quades build is dope, he ran 8 second pass with the 4.7 and its a street car... only running 4” upper pulley i believe. Driven to the track and not trailered like some of y’all...
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Die hard tvs fan^^ lol. you keep on saying tvs is the best ****ing blower, kb, whipple tvs they all are good blowers, depends on your goals and your build. If someones has the money to go all out, 4.5 whipple or 4.7kb would be the way to go or even turbos. Doesnt make sense to spend all that money a motor and have tvs. For 1200rwhp or more i wouldnt want a tvs. 4.7kb or 4.5whipple would destroy a tvs.
And you need the secret sauce version for that much hp
Quades build is dope, he ran 8 second pass with the 4.7 and its a street car... only running 4” upper pulley i believe. Driven to the track and not trailered like some of y’all...
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Exactly!!!!!!!!!!!!!Die hard tvs fan^^ lol. you keep on saying tvs is the best ****ing blower, kb, whipple tvs they all are good blowers, depends on your goals and your build. If someones has the money to go all out, 4.5 whipple or 4.7kb would be the way to go or even turbos. Doesnt make sense to spend all that money a motor and have tvs. For 1200rwhp or more i wouldnt want a tvs. 4.7kb or 4.5whipple would destroy a tvs.
And you need the secret sauce version for that much hp
Quades build is dope, he ran 8 second pass with the 4.7 and its a street car... only running 4” upper pulley i believe. Driven to the track and not trailered like some of y’all...
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Die hard clueless GT500 owner please quote me where I said it was the best lol..The 4.5 whipple inlet is garbage. The 4.7 inlet isn’t much better using the standard inlets for both. Wrong I made 1215 with the non R. Should make ~1300 with the 2.65R. My car is 100% street car as well. There are other limiting factors such as power limitations with an iron block or stock crank rpm limitations. It’s not just slap the biggest blower you can find on. They also seem to be harder on the cranks. I think a 1200hp 2.65 car will gap a 1200hp 4.5/4.7 car. However the real debate is 3.6/2.9/3.4/2.65/3.0/3.2. I want to know which makes more power.Die hard tvs fan^^ lol. you keep on saying tvs is the best ****ing blower, kb, whipple tvs they all are good blowers, depends on your goals and your build. If someones has the money to go all out, 4.5 whipple or 4.7kb would be the way to go or even turbos. Doesnt make sense to spend all that money a motor and have tvs. For 1200rwhp or more i wouldnt want a tvs. 4.7kb or 4.5whipple would destroy a tvs.
And you need the secret sauce version for that much hp
Quades build is dope, he ran 8 second pass with the 4.7 and its a street car... only running 4” upper pulley i believe. Driven to the track and not trailered like some of y’all...
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Haha clueless, sounds like someones butthurt...the way you talked about kb in the earlier comments definitely sounds like it... those blowers are hard on the crank for sure, thats why double key crank, crank support is needed, like i said if you got the money then go big, small tvs would be a waste. Those blowers have made 1500-1600rwhp...some on ig, Go do some research before you talk...
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Why would I be butthurt exactly? I make more power currently with a liter less. Yea I am fully aware that in the grand scheme of things the big gun 4.7/4.9 can make more power. However being limited by the iron block or rods like yourself it does no good to make more power. It’s not a money thing it’s knowing what blower size fits my needs. My car would be slower with a 4.2/4.7/4.9 pullied to make ~1200.
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