New Supercharger for 2011 w/ bolts ons... Gen 2R or KB?

B.LaCe · Feb 23, 2017

So I need to replace my supercharger (@30k miles). I'm guessing the bearings are going (sounds like rocks rolling around in a coffee can). I'll be the first to say: I'm no mechanic and I'm no weekend racer. I drive my car a couple days a week, about 5-6 months a year, depending on the weather here in Southwestern Pa. That being said, I'd like to add some more power by upgrading the sc instead of rebuilding.

My current mods are:
Kooks 1 7/8" long tube headers
Kooks Off-road H pipe
Ford racing Mufflers (previous owner had a Flowmaster catback)
JLT "Big Air" plastic intake
MGW Gen 2
Dynatech Aluminum driveshaft
Ford Racing 3.73 gears (needed repair)
NGK TR6 Spark Plugs
Innovators West 15% Overdrive Harmonic balancer
Thump Racing Tensioner

The car made 537rwhp and now needs a new supercharger and I'll be doing the clutch and suspension this spring as well. My question is: Should I go w/ my gut and get the VMP Gen 2R 720 hp kit or listen to my mechanic and shell out for a KB 2.8? My goal is to build a RELIABLE car for cruising that's putting down at least 750RWHP (my best friend has a Hellcat, im tired of hearing that 707 number)... with the ability to grow later if so desired.

I appreciate any help or insight. I know there have been countless "This VS.That" threads on here and I've learned a ton already... so thanks!

MastaAce03 · Feb 23, 2017

It's going to depend on the fuel you're running and how much boost you're throwing at the blower. I would go with the gen2R. The KB starts to shine in the low to mid 20psi. So if you don't plan on running that much boost, go VMP

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B.LaCe · Feb 23, 2017

Thanks for the reply! Im running 93 only. I was planning on running ~19psi and keeping the stock bottom end for now. Kinda why i was leaning towards the TVS.

RedVenom48 · Feb 23, 2017

TVS is much more efficient. What you make in building PSI with the Kenne Bell, youll have to combat in discharge temps. All the boost in the world is no good if the ECU pulls timing because of the temp your boost is at.

99cobraUgotbit · Feb 23, 2017

Gen2R

whitelightning9 · Feb 23, 2017

I vote the gen2 R be careful with that 15%lower though, going to be a lot of boost.

Fast Ford · Feb 24, 2017

Gen2R

TVS VERT · Feb 24, 2017

Your gonna get different opinions from different guys most of who will be cheerleaders for the current setup that they have on their car....Ive had all 3 basic setupson my car but haven't had the chance to test my current setup as weather has it on hold.........I had a 2.9 Whipple and 72mm Tbody setup on my car and it was spun to 18-19 psi car felt strong but felt lazy down low to be fair that blower needed to be spun faster to get in the blowers happy RPM range, ditched the 2.9 for a 3.6KB setup and blower was pullied to 19-20psi car felt a lot stronger in mid range and pulled harder up top for sure but once again a 3.6 at 20Psi is not where it likes to be......any larger blower likes to be spun harder the 2.9, 3.4 Whipple and 3.6 and up KB need to be at a min of 22-23 PSi for you to get the most out of the setup........My current setup consists of a Ported GEN2R TVS with a 170 Elliptical tbody and a 149mm Pmas intake and made the switch from 96 octane to E98..... gonna be running a 10% lower and 2.4 upper I don't know what it will make for Power as a dyno numbers don't mean squat to me.....But similar setups with an auto have been bottom 9's at 148-149 and that's the goal im setting for the car and I will throw what $$ it take to make that happen with a stock unopened longblock

But to be fair to the larger blowers I replaced had they had E98 fuel and been spun harder who knows maybe they still would have been on the car.

Also a thing to consider is shortblock longevity at any time you start making around 800RWHP its not gonna last forever and driving habits and RPM will decide how long it last and when it lets go so does 20K from your bank account to build a motor to handle 4 digit power reliably .

Kel · Feb 24, 2017

What does your mechanic think? I'd recommend Wolfpack Speed here in Pitt if you're looking for options. Good luck, hard not to think of the Shelby here in SW PA when it's almost 80 out today, eh?!

B.LaCe · Feb 24, 2017

Thanks everyone for the replies. I realize the Gen2R will be a more efficient bower and I'm really leaning that way.

TVS VERT said:
Your gonna get different opinions from different guys most of who will be cheerleaders for the current setup that they have on their car....Ive had all 3 basic setupson my car but haven't had the chance to test my current setup as weather has it on hold.........I had a 2.9 Whipple and 72mm Tbody setup on my car and it was spun to 18-19 psi car felt strong but felt lazy down low to be fair that blower needed to be spun faster to get in the blowers happy RPM range, ditched the 2.9 for a 3.6KB setup and blower was pullied to 19-20psi car felt a lot stronger in mid range and pulled harder up top for sure but once again a 3.6 at 20Psi is not where it likes to be......any larger blower likes to be spun harder the 2.9, 3.4 Whipple and 3.6 and up KB need to be at a min of 22-23 PSi for you to get the most out of the setup........My current setup consists of a Ported GEN2R TVS with a 170 Elliptical tbody and a 149mm Pmas intake and made the switch from 96 octane to E98..... gonna be running a 10% lower and 2.4 upper I don't know what it will make for Power as a dyno numbers don't mean squat to me.....But similar setups with an auto have been bottom 9's at 148-149 and that's the goal im setting for the car and I will throw what $$ it take to make that happen with a stock unopened longblock

But to be fair to the larger blowers I replaced had they had E98 fuel and been spun harder who knows maybe they still would have been on the car.

Also a thing to consider is shortblock longevity at any time you start making around 800RWHP its not gonna last forever and driving habits and RPM will decide how long it last and when it lets go so does 20K from your bank account to build a motor to handle 4 digit power reliably .

Thanks for the reply, Vert. I saw in a few other posts that you were ditching the KB 3.6 for a Gen2R and was curious, why? Like you, HP numbers aren't my biggest concern. I just want my car to pull harder, RELIABLY, on stock internals.

B.LaCe · Feb 24, 2017

Kel said:
What does your mechanic think? I'd recommend Wolfpack Speed here in Pitt if you're looking for options. Good luck, hard not to think of the Shelby here in SW PA when it's almost 80 out today, eh?!

Lol, Mike (WolfpackSpeed) is my mechanic. He is REALLY pushing me towards a KB 2.8LC. He's a great dude and I also highly recommend him to others. He's built some nasty cars with KB blowers and compared to the ones he's built with TVS blowers, he steering me towards a KB. He taken a ton of time to speak with me and share customer dyno tunes (KB vs. TVS). Although, im not sure how much he has worked with the Gen 2, let alone the R... which is what i'd like to go with.

It is really hard knowing I cant drive my Shelby when its February and 76 in Pittsburgh! Although, my DD is a '17 STI... nowhere near the power of my Shelby but a hell of a fun car to drive! Cheers!

Joewee500 · Feb 24, 2017

The 2.8 vs the Gen2r is a no brainer. Go with the vmp. I had the KB 2.8 and swapped to a vmp gen2. Way more tq that you can feel and just as much power up top if you're only spinning to 20lbs.

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GT Premi · Feb 24, 2017

TVS VERT said:
...
But to be fair to the larger blowers I replaced had they had E98 fuel and been spun harder who knows maybe they still would have been on the car.

...

And therein is why it's so difficult to believe stories of how the TVS is better than anything else on the market. The TVS guys will throw a TVS on along with smaller pullies, better fuel, more timing, etc., all things they didn't do with the other, larger blower(s) they had and then try to come to the conclusion that a TVS is the best in the world. The results aren't remotely comparable. That's not to say the TVS isn't a great blower. It definitely punches above its size size class. However, if you do a pulley-for-pulley, mod-for-mod, fuel-for-fuel comparison of a 2.3 TVS vs a 2.9 Whipple/2.8 Kenne Bell, you'll find that it slots exactly where it should. And that's not ahead of the larger blowers.

OP, why isn't a 2.9 Whipple on your list? Whipple has updated the rotor pack for the 2.9, and it's supposed to be more efficient and produce more power. We haven't seen any reports on this forum yet, though. Also, the 2.9 doesn't run as hot as the TVS and KB.

Ben99GT · Feb 24, 2017

GT Premi said:
And therein is why it's so difficult to believe stories of how the TVS is better than anything else on the market. The TVS guys will throw a TVS on along with smaller pullies, better fuel, more timing, etc., all things they didn't do with the other, larger blower(s) they had and then try to come to the conclusion that a TVS is the best in the world. The results aren't remotely comparable. That's not to say the TVS isn't a great blower. It definitely punches above its size size class. However, if you do a pulley-for-pulley, mod-for-mod, fuel-for-fuel comparison of a 2.3 TVS vs a 2.9 Whipple/2.8 Kenne Bell, you'll find that it slots exactly where it should. And that's not ahead of the larger blowers.

OP, why isn't a 2.9 Whipple on your list? Whipple has updated the rotor pack for the 2.9, and it's supposed to be more efficient and produce more power. We haven't seen any reports on this forum yet, though. Also, the 2.9 doesn't run as hot as the TVS and KB.

It's nice to read a post from someone with a clue.

CD07GT500 · Feb 24, 2017

GT hit the nail on the head. If you want more power capability down the road 2.8/2.9 will make more power.

biminiLX · Feb 24, 2017

For your use/goals, TVS Gen2R all day. Save a few bucks too. Add fuel and supporting mods later, for now, swapping stock to TVS, especially the Gen2R will give you more than you need. That blower supports 900+rwhp and has great low torque.
-J

RedVenom48 · Feb 24, 2017

If im building an all out drag car from my GT500, im going twin turbo with a 6r80 swap. Not even a contest.

If im building a street strip GT500, im going Trinity TVS with pullies. If i want that over 1000 hp and torque, I'm adding nitrous. I would still be under the cost of the big Whipples or KBs and my IAT 2s would be under 100 degrees.

Of course, everyone has their build goals and budgets. Some might find having to have nitrous bottles full a hassle and build the big blowers for convenience. Still have to keep IAT 2s under control which is another battle unto itself.

biminiLX · Feb 24, 2017

Great post, I completely agree.
-J

Ben99GT · Feb 24, 2017

Like GT Premi said, pulley for pulley and fuel for fuel a new revision twin screw 2.8/2.9 kills the TVS 2300. If your mechanic is having success with the KB 2.8, why not listen to his recommendation? I have a gen 2 TVS myself, I like it, but I don't try to pretend it is more than it is.

RedZR · Feb 24, 2017

Hello,
You are in good hands. Mike changed my clutch and tuned my 2008 after I put a 13/14 TVS on it last fall. He also suggested a KB but my budget could only do thr TVS.

Regardless,me got 620 rwhp from mine but told me headers and a throttle body would get me to 650. I have a TVS with a 2.4 and the boost a pumps for fuel supply.

Mike dies fantastic work.

Dan

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