I don't want to compare anything....just stating from experience that a large displacement blower is bad ass and not lazy on the street.....so is your 1200hp TVS for that matter....but your I'll compare my dyno graph to anybody and anything is a bad look....check back in when you get her to the track and let us know what it runs...
3.6 KB vs VMP Gen3R test
- Thread starter 2011 gtcs
- Start date
Yep, exactly. You said it, not me. It’s a failed attempt at marketing.
If you apply cooling mods to an overspun VMP in a comparison with another blower (a larger twin screw), then to keep it on a level playing field the twin screw would get the same cooling mods...and inevitably have lower IAT2s.
I’m not doubting your purchase or the power-making ability of the 2.65. I’m also not suggesting you go twin screw. Relax.
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Bad look? Lol Uh no. I want to compare power and show you what he means by a lazy twin screw power band. We both made close to the same peak power on a dynojet.
There is a car similar to yours going mid 8s at 164+ at a pretty heavy raceweight with the 2650. Another 2650 yote going 170 at ~3450 with more pulley to go IIRC.
Failed? No not really. However I do think he should of did a few things differently for the test.
Nobody said it wasn’t ok to put comparable cooling mods on the twin screw cars lmao.
Sooooooo.....a car my weight running my times with a TVS is what.....super nasty, super fast, and real snappy....and my car is lazy and sluggish because I'm running a 4.2....All good bro....I understand your point perfectly....your making total sense now.....I love the "there are these guys running" etc. etc....lol.....all kinds of guys going 7's on the big blowers......but you just want to talk graphs and dyno #'s....like I said let us now what it runs at the track.....your set up is bad ass and makes good steam.....now go see what it runs and traps and let us know.
The point went over your head. Nobody said big blower cars can’t make power and do well at the track. The point was the big twin screws are lazy down low with wagon wheels. The track isn’t the only calculation of speed. I prefer 60-130 times. Post yours up.
Everybody knows big blowers make power and do well at the track.....so does a TVS.....My point is I've built and owned both set ups and a large blower is just as nasty and strong down low as a TVS if set up correctly......that's it period....not putting down your TVS....60-130 times...really...is that a thing now...lol....I run mine on the street, 1/8 mile, 1/4 mile, and 1/3 mile roll race....never heard of a timed 60-130 event.....next you'll be asking how many G's does my car pull down low.....lol.... must be getting old...I'm out...
The 2.65R has been out for about 6 months. I doubt you have ran one. If the smaller TVS can make the desired peak power number it will be the faster combo more often than not against the large twin screws.
60-130 is definitely getting popular with the dragy being affordable.
So I am curious what is your current combo? Iron block? Compression? Cams/heads? 4.2 still? Upper/lower Pulley size? Rpm?
Pretty sure that’s an auto swapped GT500 and torque curves can look funny. What’s not effected by the auto trans is that nice difference in top end power right where he will race it. That peak and gap is right in the power band on track.
Cars should 60’ similarly but then it’s over with TVS winning, but let’s wait for the track vid follow up.
-J
I agree man, I can’t recall if you’re still stick shift or not, but any street car running 8s over 160 is very impressive.
So I guess our cars make my point. If you want the biggest power levels and stay SC, go with the 4L screws from Whipple or KB. If you want a 9s street car, the TVS combo is better. My opinion, so you can definitely disagree.
How much would you have to turn down your 4.2 to run 155mph?
If the goal is mid 9s at 150, the choice of TVS means you’re leaning on it harder, and because of that it feels better and stronger on the street than a big blower turned down.
I’ve never owned a KB or Whipple but I’ve been in a few, and my current 5.8 TVS2650 feels best to ME on the street.
I run 315/50/17 MT ET Rs on my street setup and its right at the limit of what’s actually able to control on the street. But a combo maxed to the limit of traction on the street is straight nasty where I use it the most.
Basically, build the car for what you want and make the choice for your money.
It’s great to have options.
-J
What is an SS 2650?
VMP ‘secret sauce’ Gen3R. It is also called the stage 3 Gen3R as its ported for improved flow directly from Magnusson to VMP. You can then have that version ported by Jokerz performance to give you the ultimate TVS2650 blower for our 5.4/5.8s.
I’m likely replacing my OG regular Gen3 that works well on my car with this SS Gen3R.
I do have one other thought I’ll be discussing with Justin first.
As above, the SS 3R is designed to give up some low end for better top end.
To me this will let me control the car better on the street while improving track performance where I have it max pullied and shift at 7200rpm.
You could definitely go big KB or Whipple at this point, but to me that causes hood clearance issues and may harm the crank (mine is a stock/CJ crank that is dual keyed).
For me, my car is 98% where I want it, so the final upgrades are optimizing the Magnum XL for consistent mid to low 9s (dropped it off at D&D Walsh Motorsports this past Thurs actually) and swapping the blower out for a version of the TVS2650 best suited to my combo. It should pick up a solid 100rwhp from the current 1050rwhp and most importantly improve the 9.55@154.
-J
Perhaps I missed it but how much boost did they each make ? My concern would be the faster spinning blower which is very close to the slightly larger blower in power would also create more heat.
They both made 24psi. Not sure what the IAT2 temps were during the pulls.
Yes, it is an auto swapped car. But why would the torque curve only be jacked up for the 2.65? Just kind of seems like an excuse. Wouldn’t it be jacked up for both blowers?
I’d be pissed if I paid $4k+ for a blower swap to lose 40 peak torque and only gain 20 something peak hp. That’s just me though. Again, agreed; I would like to see trap speeds.
You’re right and I hear you but with auto cars the way the converter couples can cause changes in the way the torque curve comes on. I think Justin mentioned it on a previous post in here. Once it’s coupled, the higher end of the HP curve will be consistent and from the graph you can see where the TVS improves the power and it’s right where you’d use it on track. The ultimate test will come when he runs it on the track. Ideally the only change being the new blower.
That’s exactly what I’m hoping to do for my car. The only changes on my car will be a rebuilt Magnum XL and a blower swap.
Trans should be negligible but the new blower should show a change on both dyno and track.
I plan to use same Dyno and then go right to the same track, so it’ll be a good test at least for what I do with the car. Plus it’ll be independent and not biased.
-J
Would someone please tell this guy that the TVS is the king of all blowers so we can be done with this thread? He's arguing with Serickson and Bimini for ****'s sake.
Lmao?
All good Jay....not disagreeing with your choice of blowers....just letting guys know that are on the fence that a turned down 4.2 is wicked quick and as nasty as a TVS on the street....I have a pretty basic set up.....5.4 Iron Block...Bryant Crank.... 3.55 8.8 rearend ....4.2 KB...L&M Cams...Big Gun Innercooler....ported and expanded lower manifold....10.5 compression....E-85...Factory ECU....Built 4L80E....Basic port and polish on the heads...the car will run 8.9-8.8 @ 157 making 19lbs of boost with the 4" pulley.....but......take a ride with ME on the street with the 4" pulley.....lazy and sluggish would not be your first thoughts when stepping out of the car....LOL....that I can guarantee.....LOL.....BTW....It is was just as nasty with the manual...
I don't have any tracks around me that allow me to make passes without passing NHRA tech.....to me it didn't make sense to have a car that would only run 9.5's-9.3's @150+ since I was required to have a chute, 8.5 certified cage, and all the other safety equipment anyway. I upgraded my maxed out TVS....not a 2650...it wasn't out at the time.....to the 4.2 and I'm able to run right at my 8.5 cert....exactly what I was after....
Sounds like we are both happy with our set ups and there was no right or wrong choice by either one of us......my only reason for jumping into this thread was to let everybody know that a pullied down 4.2KB or Whipple is a beast on the street. Set up correctly and driven without fear but lots of respect the 4.2 will definitely hang with a max effort TVS and possibly have a little more head room up top....I did the full Navigator conversion on mine so 8K is no problem with my motor......BTW I'm running the 8.5's at 25# with the 3.5 pulley.....haven't even tried the 3.25 or 3.0 pulley.......yet...lol...
Also.....this is from a guy that has maxed out the factory blower.....the first and 2nd Gen TVS blowers...3.4 Whipple.....and 4.2...
Bryant crank is not all that basic lol but it is very nice to have and enables you to spin that wagon wheel up
. Stock crank cars like mine and the majority have to account for that hence why the TVS is usually a better option for most sub 1300hp combos.I am sure your car pulls hard but it’s all relative. Your average joe is not going to feel the difference in average power of 2 1200hp cars lol.
Anyways not knocking your car and I actually like the fact you went with the 4l80. Also glad to see you pushing the iron block. I want to eventually turn mine up more with the 2.65R but worried about how long the stock crank and iron block will last making ~1300.
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