Just ordered a 75mm pulley for my supercharger, already ordered the belt yesterday. Gonna wait to see tracking and book my car in for a retune next week hopefully.

Currently using a 85mm pulley, between 9-10psi boost and getting 455Kw at the tires, my tuner is useless (j/k not really) so I never got a dyno sheet and have no idea on the torque but it would be around 730–780 Nm. For my US brahs that's 610 rwhp/538–575 lb-ft at just over 9lbs boost.

Expecting 12ish+ with the 75mm pulley. That should get me 495–525rwkw/664–704rwhp 810–870 Nm/597–642 lb-ft


Fkn excited brahs srs, wont be a huge difference but it will be noticeable.

Car is an Aussie model, it's a Chevy SS in the US. Mine is an LS3, cammed, exhaust, OTR, valvetrain and fuel pump upgrade and a 2650 blower. Did all the work myself except the tune.

Mine looks identical to the one below minus the side skirts, Walkinshaw badging and weather shields on the windows.

I plan on adding similar side skirts, a lip splitter, some bonnet vents the same as the SS except I will cut holes in the bonnet to make them functional (SS ones are cosmetic only) and new wheels. Also going to eventually do lots more mechanical and functional.

Mine is a total sleeper except for the sound, it's sounds fucking insane srs. I made sure to include bimodal mufflers with the upgrade to retain factory functioning but I pulled the relay, same as I did before the upgrade so I have the option still to make it considerable quieter if needed, just have to plug in a relay.

Smack a Chev badge on it

Nice work though; still wondering if my Mustang needs a supercharger. Upgraded headers, high flow cats and fuck off loud exhaust. That alone added some acceleration and speed; about to replace the air filter with a Roush cold air intake, and get a performance tune. I was gonna get it cammed; local bloke can't do it but he suggested a ghost cam via tune so I wouldn't have to replace the clutch. Not worried about clutch replacement though.

It would be tough to have boost but not a built bottom end, I’d want to push it to the limits.

When I whipple my cobra I started at 13psi, within a week I was at 15 psi, another few days I was at 17psi which was the limits of pump gas. I rocked that for about a year until I pulled the blower to go bigger injectors for e85. I started with a 17psi tune with all the timing and it seemed like a rocket ship, by the end of the weekend I was at 22psi. I kept it that way until I could get a pulley combo that would add more boost (bigger crank pulley) and ran 24psi for a while.

I now have a bigger blower so it’s easier to get more boost but the car makes over 800rwhp so traction is the issue, so I dropped it down and run 21-22 psi. More boost would just mean more tire spinning so not a lot of point. I ran MT drag radials and they’d kind of hold a 2nd gear roll but only lasted 1500 miles.

Once I had it pullied for max boost and on a super cold night I saw 29 psi.

You don't talk about my car that way, I drive a Dodge Stratus!

Get a blower, it's leaving humanity behind for your car ;) Plus you obviously want a cam to go with that exhaust, if you are getting a blower you can get a cam to suit rather than having to get one that is good as both na and forced induction.

It will be cool with the intake/exhaust/tune though.

Funny Canadian Aussie guy I like watching for some cool cars, mustang in this vid is an absolute weapon.




Yeah I will build it eventually and you are right it is tough, but I am on the limit now as to what the stock 6l80 and everything behind that can manage really, I am probably pushing the friendship TBH so I will put the money elsewhere for a while, car is in the tuner now so I'll find out if her got me my 500rwkw tomorrow or not.

You car sounds crazy, mine spins right to the end of 2nd and on the change into 3rd and that's at 610 with the traction control on 6 spd auto. I also only run 245s (stock size) but plan on getting staggered 295/255, should make it grip up a bit more.

What sort of blower you running, just a bigger whipple than the first one?

Had to google, never saw that skit before but it was good.

Mines an 03 cobra, it had a ported stock blower when I got it and I swapped on a 2.3l whipple at low boost and eventually finished with it around 22psi. That was the most boost a person could get without going to a larger crank pulley which has its issues on these cars.

I then swapped to a 2.3 eaton tvs because its easier to work around and doesn't require removal of the blower to access the pass side valve cover or injectors. The tvs blowers are supposed to be torque monsters as well. I ran that blower around 22-23 psi.

When the 2.65 tvs came out I bought one of the first ones and thats what I currently still run. I've thought about getting it ported or buy 2.65R but I can't justify it. They wanted overa grand for a port and rebuild of the the blower and I dont need a rebuild the blower has maybe a few thousand miles on it.

A few times ive considered going 3.0 whipple but they rub the hoods, it would make working on stuff more difficult and id probably end up cranking it up way to far. The cobras come with forged internals and if they have head studs added (I do) they can do 1000hp so I have room to grow if I had traction on the street.

Mirin, I have the same blower under the Harrop brand. I chose not to get the ported version, it was mostly for race/1200hp+ irrc.

I added the pulley and belt yesterday, got it back from the tuner today. Pretty happy with it, not gonna go any harder on it until I build the bottom end, probably build the box, get a hi stall converter and a truetrac diff etc. It's a good fun street sleeper for now (except for the sound).

Modified the pic to remove a few identifiable bits like my rego and the name of the tune shop etc. Tuned on 98 unleaded. Curves are a bit wobbly because he had trouble with it spinning on the rollers.

Not sure if I did the calculations right but 680ish rwhp and 846lbs of torque????? if so that torque is insane and must feel like you're pushing your guts out at wot. Thats around 100more ft lb of torque than my car.

How are IAT's on your car not running a ton of boost? I really need to add a Stewart EMP pump to mine to get some flow, as the 1" Davies Craig doesn't move squat.

Don't have anything to measure IAT yet but yeah it's torqy as fuck, pretty happy with it except that I am worried I'm going to break something all the time when I stomp on it. I have mostly babied it around and only used moderate throttle tbh, it's way too much power to use in most driving circumstances unless you just want to fry the tyres.

No idea on the cooler pump, I remember it was a Bosch though.