Street queen on pump gas blower size opinions

zcs626 · Oct 21, 2018

I've read lots of threads and to no surprise there's lots of conflicting info per thread. Im looking to upgrade to a larger blower.

Sell me on why I should, or should not, go with the gen 3 Whipple 2.9 (non crusher). My cobra has all your basic bolt ons including long tubes, and will only be ran on the street on 93 octane pump gas.

Will I be able to generate enough boost to spin the 2.9 and it still be fun to drive on the street? My HP goal is 650-700.

Sent from my SM-G960U using the svtperformance.com mobile app

biminiLX · Oct 21, 2018

Street only stay Eaton but go TVS.
-J

01yellercobra · Oct 22, 2018

I don't think you'll hit 650 on 93. I think you'll need E85 for that. A 2.3 would probably work for you.

Shadow Grey 03 · Oct 22, 2018

What they said. Street fun use a 2.3 and 650-700 rwhp isnt likely on 93. Well, it isnt safely able to hit those numbers without some motor work.

zcs626 · Oct 22, 2018

Shadow Grey 03 said:
What they said. Street fun use a 2.3 and 650-700 rwhp isnt likely on 93. Well, it isnt safely able to hit those numbers without some motor work.

If 650-700 for my preferred use of the car isn't ppossible, I'm fine with excepting that. Thanks for the input.

What doesnt make the larger blowers fun on the street? Just takes too long to spin up the blower leaving the driver with a "meh" driving experience?

Also - I saw after these posts from you guys the VMP TVS 2.3 has been discontinued and they sell a gen3 2.65.

Sent from my SM-G960U using the svtperformance.com mobile app

Shadow Grey 03 · Oct 22, 2018

zcs626 said:
If 650-700 for my preferred use of the car isn't ppossible, I'm fine with excepting that. Thanks for the input.

What doesnt make the larger blowers fun on the street? Just takes too long to spin up the blower leaving the driver with a "meh" driving experience?

Also - I saw after these posts from you guys the VMP TVS 2.3 has been discontinued and they sell a gen3 2.65.

Sent from my SM-G960U using the svtperformance.com mobile app

The larger blowers have larger rotors and at 93 friendly boost levels, the 2.3 seems to be more responsive at lower rpm ranges. They also like to be spun up a little higher boost wise to maximize their efficiency ranges. If you ever planned on e85 or race fuel, then the bigger blower would be ideal. 93 is just the limiting factor.

zcs626 · Oct 22, 2018

Shadow Grey 03 said:
The larger blowers have larger rotors and at 93 friendly boost levels, the 2.3 seems to be more responsive at lower rpm ranges. They also like to be spun up a little higher boost wise to maximize their efficiency ranges. If you ever planned on e85 or race fuel, then the bigger blower would be ideal. 93 is just the limiting factor.

Thanks. I don't plan to run e85 or race fuel. With the TVS 2.3 going by the wayside, do you think the TVS 2.65 would produce similar playful results on the street? I know it's a new product with not a lot of reports back yet but thought I'd ask.

Sent from my SM-G960U using the svtperformance.com mobile app

01yellercobra · Oct 22, 2018

I don't know anything about the 2.65. I've driven and ridden in cars with Whipple 2.3's and KB 2.4's. Both were fun and weren't lacking in the power department.

cj428mach · Oct 22, 2018

Still 1 or 2 new tvs left from tps.

Shadow Grey 03 · Oct 22, 2018

zcs626 said:
Thanks. I don't plan to run e85 or race fuel. With the TVS 2.3 going by the wayside, do you think the TVS 2.65 would produce similar playful results on the street? I know it's a new product with not a lot of reports back yet but thought I'd ask.

Sent from my SM-G960U using the svtperformance.com mobile app

The original report from Eaton claimed that it would take less hp to turn the gen3 rotors, but I dont know if that has been done and how it relates to the portion of the torque curve that will be seen in a street driven car.

fivelitrecobra · Oct 24, 2018

I have a gen2 2.3 on my 03, makes 640whp on 93 octane. Definitely not lacking power anywhere, loads of bottom end and pulls hard all the way thru. I've never ridden in a car with a 2.9 or bigger so I cant comment on that, but I cant see how it could be any more fun on the street then the 2.3.

stangfreak · Oct 27, 2018

pump gas ? street? TVS. simple answer. and I own a 2.9 whipple and telling you to go with a TVS. If you can find a 2.3 that would be perfect

03 Cobra DSG · Oct 28, 2018

I make over 700 on 93 at 19lbs of boost with a 3.4 so that power level is possible but I would still recommend going with a smaller blower, I don’t have e-85 “easily” accessible but gonna make the switch anyway. I’ll see how that works out.

Sent from my iPhone using svtperformance.com

P49Y-CY · Oct 28, 2018

i'm in the same boat as the op - mine is a street car and i never will use anything else than premium pump gas.

what is the max realistic horsepower on a stock engine? is it about 600rwhp?

Bdubbs · Oct 28, 2018

P49Y-CY said:
i'm in the same boat as the op - mine is a street car and i never will use anything else than premium pump gas.

what is the max realistic horsepower on a stock engine? is it about 600rwhp?

Generally rwhp range on straight 92-93 fuel should be around 600 rwhp. There are way too many "heart break" dynos and way too many "happy" ones.

I'd really like to see a 40 roll race between one making 650rwhp on 93 vs one making 650rwhp on e85. I guarantee it won't be as close as the dyno says it should be...

Sent from my Moto E (4) Plus using the svtperformance.com mobile app

MG0h3 · Oct 28, 2018

P49Y-CY said:
i'm in the same boat as the op - mine is a street car and i never will use anything else than premium pump gas.

what is the max realistic horsepower on a stock engine? is it about 600rwhp?

Mechanically I think the general consensus is @725-750 is safe long term. Limited by fuel of course; those are E85 numbers.

If you have E85 available you are really missing out.

Sent from my SM-G950U using the svtperformance.com mobile app

c6zhombre · Oct 28, 2018

As Brady mentioned.....dyno numbers can have a ton of variances and assumptions about correction factors and conditions.

I think the better way to approach it, is from the "fuel/boost/timing" angle and what is appropriate to keep a motor together longterm. I thnk its always best on the 91 and 93 pump gas situations to keep boost lower than one might be tempted to do with a simple pulley swap off the shelf. You might get a hero dyno number, but real world you're creating high IAT2 temps that will quickly pull the timing. Maybe on 91 octane that means 16psi and 16 degrees....maybe on 93 that means 18psi and 17 degrees. Let dyno numbers fall where they may....safety first because fuel variations happen and you have no way of testing pump side.

Now on E85, go for the gusto. High boost......high timing. IAT2 is not near a concern. There won't be any timing pulled until stupid high IAT2s. E85 makes more fun....and for much longer durations.

I won't even entertain numbers where torco would be considered.....I wouldn't run that in my lawn mower much less a terminator.

Bdubbs · Oct 28, 2018

c6zhombre said:
As Brady mentioned.....dyno numbers can have a ton of variances and assumptions about correction factors and conditions.

I think the better way to approach it, is from the "fuel/boost/timing" angle and what is appropriate to keep a motor together longterm. I thnk its always best on the 91 and 93 pump gas situations to keep boost lower than one might be tempted to do with a simple pulley swap off the shelf. You might get a hero dyno number, but real world you're creating high IAT2 temps that will quickly pull the timing. Maybe on 91 octane that means 16psi and 16 degrees....maybe on 93 that means 18psi and 17 degrees. Let dyno numbers fall where they may....safety first because fuel variations happen and you have no way of testing pump side.

Now on E85, go for the gusto. High boost......high timing. IAT2 is not near a concern. There won't be any timing pulled until stupid high IAT2s. E85 makes more fun....and for much longer durations.

I won't even entertain numbers where torco would be considered.....I wouldn't run that in my lawn mower much less a terminator.

Well said Jeff.

Sent from my Moto E (4) Plus using the svtperformance.com mobile app

Street queen on pump gas blower size opinions

zcs626

Member

biminiLX

never stock

01yellercobra

Well-Known Member

Shadow Grey 03

Well-Known Member

zcs626

Member

Shadow Grey 03

Well-Known Member

zcs626

Member

01yellercobra

Well-Known Member

cj428mach

Well-Known Member

Shadow Grey 03

Well-Known Member

fivelitrecobra

Active Member

stangfreak

Well-Known Member

03 Cobra DSG

Well-Known Member

P49Y-CY

fomocomofo

Bdubbs

u even lift bro?

MG0h3

Well-Known Member

c6zhombre

E85 NutSwinger

Bdubbs

u even lift bro?

Users who are viewing this thread