950whp on the 3.7 pulley on 93 is totally reasonable on a somewhat cooler day 17lbs of boost at 8000rpm assuming 2" headers & no cats for better flow.. probably not in 100 degree weather obviously
My 3.8 whipple on one pulley bigger (less boost) 3.85 made 915rwhp on 93oct...
75 degrees...
I just had one sent out to Kong for a porting job. Car should be completed in 4 weeks.
I went with kong on the advice of HPP Racing they recommended them vs others.
I also reached out to Kong myself as the blower sent to them only has 500mi and my concerns were I didn't want the oem bearings...
So bit of an update, I've had a little seat time in the car and have noticed the iat & iat2 temps are a tad higher than stock obviously.
Stock the iat temp seemed to be 10 degrees over ambient & slightly more at iat2 typical stop and go 75 degree weather.
The whipple seems to be a little...
And actually this is on the 3.875 pulley I do believe you could step down ONE pulley size to the 3.7 and still possibly be on 93 we were both in the same boat. (I will be looking to do so in the near future) I want the car maximized within reason on one pulley where I can still run pump gas. And...
I went with what I believe to be a lesser known lockout kit I saw others running by SPE it's all billet much like the kelltrac kit + the steeda bushings for the cradle. The rear end doesn't have all that wandering feel to it any longer- not really any nvh either. Just more planted feeling.
I jockey between the R888's at the 27.5 325s and the 28.5 tall nittos (kinda wanting to retainthe cars handling characteristics).... Hard decision... What led me over to nitto again was the 14' had tall tall 3.31 gears and it was the same vs stock on that car too an inch taller - and I didn't...
I did send several pictures and a short dyno video to another member here who said he'd help me out posting pictures! Much appreciated thank you...
Also this is the 3rd build I've had HPP Racing do for me an 04' cobra, a 14' GT500 & this 21' GT500 the customer service and attention to detail...
I'm on stock Ps4 tires just got the car back at 1pm literally today my RTD files arent on the cloud yet to switch Tunes so E85 for a few days until we get that straight... I'm rolling into it half throttle on the stock tires and we'll it's a little terrifying lol.
The 14' I had before this...
I think the headers & no cats is what pumped my numbers a little bit. I had full exhaust stainless works on my 14' gt500 also no cars and this new GT500 is just ridiculous how it sounds the exhaust note can't be compared to anything I've heard before mustang wise. Scale ridiculous....
I tossed...
I have Exactly the setup you're inquiring about with dyno sheets.
21 GT500 3.8 whipple just as the kit comes on 93 & E85
2in American racing headers to a borla Atack exhaust
ID1300 injectors
On the 3.865 pulley the kit comes with
Made 915rwhp on 93
And 1030 on E85
HPP Racing did the full...