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2021 GT500
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Discussion Starter · #1 ·
Recently, literally two weeks ago it all came together the 3.8 Whipple was finished! After
months of waiting for parts & an open time slot for the shop to get everything installed. The level of excitement certainly high.

Myself like many others down the road of "stock blower ported FBO" vs "whipple" and being realistic with the car in regards to just wanting one pulley with a 93oct tune and an E85 tune for simplicity.

When I added the cost all up on the stock blower - porting - throttle body - intercooler - heat exchanger and fuel rails to me it just made more sense to go Whipple.

So the 3.8 Whipple kit was ordered as is unported version with the 133mm tb
3.875 Pulley
ID1300 injectors
Whipple comes with big fuel rails
2" American racing headers (catless)
Borla Atak catback
Tune is custom on the dyno

Suspension upgrades done also
SPE cradle lockout & SPE vertical links
Steeda differential bushings and an upgraded hardware kit.

Dyno tuning day was 75 degrees outside here in North Texas.

Dyno graph is horsepower only on both Tunes 915rwhp is 93 octane
1028rwhp is on E85

Car is on the stock fuel system with those numbers no boost-a-pump no fuel system.

This is on roughly 16lbs of boost as the kit comes 3.865 pulley pulling to 8000rpm not revving the car out to 8500rpm - some do i chose not to.
Plan in the near future to step down one pulley to the 3.75 for an additional one pound of boost and +40 to +50 more wheel horsepower. Will need boost a pump for that power level.

I thought having a 800whp 2014 GT500 would prepare me for this... But I will tell you its not even a close comparison. This Whipple setup is ROWDY 😆
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Moderator/Admin Dude!
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Fantastic! Congratulations on your BEAST MODE success! 🤟

Are you in the DFW area?
 

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Really, stock fuel system and e85 with that power level?

What's your duty cycle like? I can't possibly imagine the fuel system has anything left at those numbers?
 

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2021 GT500
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Discussion Starter · #5 · (Edited)
Goose - yes I'm in Tarrant CO - watch plenty of your tech and road course videos,

1 Alibi 2 - kit can be ordered with a "whipple tune" this one was not.

Kput - yes stock pumps on E85 with those numbers + ID1300's. The headroom & cutoff is right here, some others have said as well.. above this level you'll need more fuel pump.
 

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2021 GT 500 Twister Orange with black stripes
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Im getting my car back tomorrow.The car on 3.6 pully makes 1120rwhp and 1180rwhp on 3.2 pully. My 1300x are almost maxed. I am running a Fore triple pump. I would not run that car on E85 and Whipple with out a Fore return system. You're playing with fire.
 

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2021 GT 500 Twister Orange with black stripes
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One of thing to be mindful of. The american racing headers on our setup are very close to the power steering sensor. A friend ran those and lost his steering while he was driving. Make sure you dimple the header in that area. This is only needed if you are ditching the engine crossbar and using the lowering plates. iof you didnt reinstall crossmember then you should be ok. I went with kooks headers which hug the floor more and dont have this issue when using the lowering plates that come with the whipple as the sensor has enough clearance.
 

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Crap. one other thing for your setup you should do if you havent already. Go with UPR Catch cans and not Ford factory or J&L and get the ones made for the whipple and also include the check valve option for the passengers side. Very important as without that check valve it can cause codes from oil accumulation.
 

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Discussion Starter · #10 ·
Im getting my car back tomorrow.The car on 3.6 pully makes 1120rwhp and 1180rwhp on 3.2 pully. My 1300x are almost maxed. I am running a Fore triple pump. I would not run that car on E85 and Whipple with out a Fore return system. You're playing with fire.
Some might say over 1100whp on an ID1300 injector with E85 "you're playing with fire"

I had fully expected to have a full fuel system installed, in fact it was on my invoice. (Done my homework since placing this order and spoke with multiple shops - ones in the forefront on this application) When I picked up the car and they stated we took the return fuel system off your invoice, the car doesn't need it at this level "we're not going to simply sell you something you don't need" it wasn't a cost cutting measure it was it's not applicable for this level, this pulley. When this build is a culmination of two well regarded shops in the nation with decades of experience I think I'll heed their advice.

Let's be real any aftermarket 2" header on these cars is going to be a tighter fit than stock with all components. I still retain my upper magnesium brace and lowered on BMR motor mounts. I don't know who wrenched on your friends car that's unfortunate.
 

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Some might say over 1100whp on an ID1300 injector with E85 "you're playing with fire"

I had fully expected to have a full fuel system installed, in fact it was on my invoice. (Done my homework since placing this order and spoke with multiple shops - ones in the forefront on this application) When I picked up the car and they stated we took the return fuel system off your invoice, the car doesn't need it at this level "we're not going to simply sell you something you don't need" it wasn't a cost cutting measure it was it's not applicable for this level, this pulley. When this build is a culmination of two well regarded shops in the nation with decades of experience I think I'll heed their advice.

Let's be real any aftermarket 2" header on these cars is going to be a tighter fit than stock with all components. I still retain my upper magnesium brace and lowered on BMR motor mounts. I don't know who wrenched on your friends car that's unfortunate.
IDs 1300 will not run out on my setup. Lund is doing the tune and verified it’s perfectly safe. Was dynoed on 32 degree day . The kooks headers have more room for sure and not saying the American racing are bad or won’t do the job. I was providing some anecdotal info to you . Good luck with your car, I know you will enjoy it.
 

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2021 GT500 Race Red
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Recently, literally two weeks ago it all came together the 3.8 Whipple was finished! After
months of waiting for parts & an open time slot for the shop to get everything installed. The level of excitement certainly high.

Myself like many others down the road of "stock blower ported FBO" vs "whipple" and being realistic with the car in regards to just wanting one pulley with a 93oct tune and an E85 tune for simplicity.

When I added the cost all up on the stock blower - porting - throttle body - intercooler - heat exchanger and fuel rails to me it just made more sense to go Whipple.

So the 3.8 Whipple kit was ordered as is unported version with the 133mm tb
3.875 Pulley
ID1300 injectors
Whipple comes with big fuel rails
2" American racing headers (catless)
Borla Atak catback
Tune is custom on the dyno

Suspension upgrades done also
SPE cradle lockout & SPE vertical links
Steeda differential bushings and an upgraded hardware kit.

Dyno tuning day was 75 degrees outside here in North Texas.

Dyno graph is horsepower only on both Tunes 915rwhp is 93 octane
1028rwhp is on E85

Car is on the stock fuel system with those numbers no boost-a-pump no fuel system.

This is on roughly 16lbs of boost as the kit comes 3.865 pulley pulling to 8000rpm not revving the car out to 8500rpm - some do i chose not to.
Plan in the near future to step down one pulley to the 3.75 for an additional one pound of boost and +40 to +50 more wheel horsepower. Will need boost a pump for that power level.

I thought having a 800whp 2014 GT500 would prepare me for this... But I will tell you its not even a close comparison. This Whipple setup is ROWDY 😆
Great info
 

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2021 GT500 Race Red
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Im getting my car back tomorrow.The car on 3.6 pully makes 1120rwhp and 1180rwhp on 3.2 pully. My 1300x are almost maxed. I am running a Fore triple pump. I would not run that car on E85 and Whipple with out a Fore return system. You're playing with fire.
Great info too, also your follow on posts
 

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2011 GT500 SVT PP Race Red Glass Roof
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Hey guys thanks for posting about whipple upgrades and your experiences with it. Please keep us updated as many are very interested in your builds.
 

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Discussion Starter · #15 ·
All the great information out there on these Whipple 3.8 setups from PBD & Lethal on YouTube and a host of others I felt the part missing at least in my case was where's a 93 octane seup? Almost all the dyno videos with this blower start on E85 / or race gas - certainly it's more suited for higher boost.

But how about those of us who really want to enjoy the car and not be plagued by 21+lbs of boost and E85 / race gas only setup - not readily available in most cases when hitting the street.

So here with the no race port 3.8 Whipple kit & 133mm Whipple tb, 2in headers (no cats) and a borla catback it is confirmed you can put the car on a 3.75 pulley with 93 octane if you have full exhaust - less restriction.

Whp figures would add 50 hp for the 1lb of boost increase (examples out there give this figure) on top the 915whp peak my car made on the 3.85 pulley the kit ships with.

So could a properly set up Whipple 3.8 make 950whp on 93octane it certainly looks like it.
And based on the 1028whp -1029whp* peek horsepower on E85 I saw with the 3.85 pulley it's possible to be right in the neighborhood of 1100whp with the 3.75 pulley on E85 and still keep the car flexible with two tunes to enjoy.

Likely within the next 2 months I'll have the car back to add the 3.75 pulley and fueling requirements needed to support it.

Obviously if a person wants to have 2 pullies & a separate tune for each this information doesn't apply... In my case the goals were 1100whp with the whipple (on one pulley) lower boost than the stock ported for longevity - and not be chasing issues like belt slip trying to get everything out of a particular setup.

Also I'm headed out to Crescent Motorsports Track south of fort worth December 3rd to road course this setup. Weather is looking great! If you're in the area check it out & register! 🍻
 

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2021 GT500 Race Red
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All the great information out there on these Whipple 3.8 setups from PBD & Lethal on YouTube and a host of others I felt the part missing at least in my case was where's a 93 octane seup? Almost all the dyno videos with this blower start on E85 / or race gas - certainly it's more suited for higher boost.

But how about those of us who really want to enjoy the car and not be plagued by 21+lbs of boost and E85 / race gas only setup - not readily available in most cases when hitting the street.

So here with the no race port 3.8 Whipple kit & 133mm Whipple tb, 2in headers (no cats) and a borla catback it is confirmed you can put the car on a 3.75 pulley with 93 octane if you have full exhaust - less restriction.

Whp figures would add 50 hp for the 1lb of boost increase (examples out there give this figure) on top the 915whp peak my car made on the 3.85 pulley the kit ships with.

So could a properly set up Whipple 3.8 make 950whp on 93octane it certainly looks like it.
And based on the 1028whp -1029whp* peek horsepower on E85 I saw with the 3.85 pulley it's possible to be right in the neighborhood of 1100whp with the 3.75 pulley on E85 and still keep the car flexible with two tunes to enjoy.

Likely within the next 2 months I'll have the car back to add the 3.75 pulley and fueling requirements needed to support it.

Obviously if a person wants to have 2 pullies & a separate tune for each this information doesn't apply... In my case the goals were 1100whp with the whipple (on one pulley) lower boost than the stock ported for longevity - and not be chasing issues like belt slip trying to get everything out of a particular setup.

Also I'm headed out to Crescent Motorsports Track south of fort worth December 3rd to road course this setup. Weather is looking great! If you're in the area check it out & register! 🍻
Very good info, I am only thinking of 900 to maybe 1000whp, I still feel going the 3.8 Whipple route is better, I am the Philippines so NO E85 Here, my biggest worry is finding a shop I can trust, I know of one shop I kinda trust, ( Car Porn Racing) other that, Its very sketchy of who to take this car too, as with roughly 18, 2020 + GT500'S in country, how many have any shop worked on:unsure:🤷‍♀️

So I may never do it, I may wait until I move back To the USA to buy another GT500, and get these type of mods done then, But I am a adrenaline Junkie, It is hard to resist.

Going to try this Road Course stuff soon, If that is anywhere near what I think it will be, May not Need the WHIPPLE;)

 

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Also I'm headed out to Crescent Motorsports Track south of fort worth December 3rd to road course this setup. Weather is looking great! If you're in the area check it out & register! 🍻
My work schedule interferes. Have fun!
 

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Discussion Starter · #18 ·
Since I'm in the mood to defend my thorough research for everyone here. If you find this clip on YouTube you'll find Ken speaking about the stock fuel pumps the with the dyno numbers behind him. "ID1300 injectors on stock fuel pumps"

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Also I'm headed out to Crescent Motorsports Track south of fort worth December 3rd to road course this setup. Weather is looking great! If you're in the area check it out & register! 🍻
Hi GT500 info, how'd it go at MSR yesterday?

I'm a new GT500 owner and curious your (and others) thoughts on road coursing these cars with that much power. I have headers, whipple, fuel system. etc.. still in their boxes. I love 1/2 mile events but still want to be able to do an occasional hpde. I'd guess you just don't push the engine to 110% for 20 mins straight and it'll be fine? I've never had any desire to run with the red group and stay in the blue groups. Not looking to win a nonexistent trophy or pick up any body damage!

I like MSR Cresson and Eagles Canyon. Haven't taken the gt500 to any road course yet but am going to that new LG Motorsports track Dec 10 for a toys for tot track "cruise". I don't think that track is fully done yet but is close.
 

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Discussion Starter · #20 ·
Hi GT500 info, how'd it go at MSR yesterday?

I'm a new GT500 owner and curious your (and others) thoughts on road coursing these cars with that much power. I have headers, whipple, fuel system. etc.. still in their boxes. I love 1/2 mile events but still want to be able to do an occasional hpde. I'd guess you just don't push the engine to 110% for 20 mins straight and it'll be fine? I've never had any desire to run with the red group and stay in the blue groups. Not looking to win a nonexistent trophy or pick up any body damage!

I like MSR Cresson and Eagles Canyon. Haven't taken the gt500 to any road course yet but am going to that new LG Motorsports track Dec 10 for a toys for tot track "cruise". I don't think that track is fully done yet but is close.
There's another one coming up here within a week or so again at cressent, I didn't get the alignment I needed done in time and the car back on a 93 tune. And was working to have the 2nd GT500 dropped off for it's build. So unfortunately I didn't make it out myself - couple other guys I was planning on meeting out there had some small things to tacke as well so we're planning on this next HPDE at cressent with another group.

Far as the power level i just say to myself I don't necessarily have to use it all or like you say be attempting 110%

From a cooling standpoint I can say with 500 miles since having the car back yes it's cooler temps outside for sure but I've noticed the car stays around 10 degrees over ambient - hard pulls it goes plus a few degrees then immediately back down 10 degrees over ambient. And at the lower boost level I don't think heat soak should be an issue with this setup- but I'll certainly find out soon! I didn't do the livernois heat exchanger or the higher flow whipple inline pump on this setup. Also VMP does make a intercooler resivor that holds close to a gallon of intercooler coolant. If you've seen the factory intercooler resivor it's incredibly small. So I have room there to make adjustments if it does creep up in temps. (Keeping an eye on it)

I do have 2 of these cars to compare however. The whipple runs cooler than the 2nd car at completely stock level driving both spirited on the street and sitting in traffic far as the iat2 temps. On track I'll just have to see what it does.

I'm certainly going to give it a go on the road course and see how it works. I'm no professional driver either! I'm just going to gain confidence and become a better driver. Not looking to smash lap times yet.

The 2nd 22' GT500 is in right now getting the exact same modifications minus the whipple with a Kong ported blower / 105 throttle body + a 2.7 upper. Car is getting the whipple brick, vmp intercooler tank much larger and also the heat exchanger from livernois so I'll be able to compare both once that one is complete.
 
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