[Bay650]

So currently I’m starting my journey into getting this hellcat to make a good amount of power to the wheel. So my questions comes from an interaction I had with a shop regarding upgrading parts in order to reach 900whp.
After talking To plenty of stores online regarding what parts to buy to reach 900 or so, I was able to buy all the required FBO parts needed. As most of them recommended the same stuff.
Here’s the catch, now comes to tuning, I reach out to 1 very popular tuning shop, and after talking to them going over the parts I have and my goal of 900whp, they said the only thing that needs changing is my pully…. I bought a griptec v2 2.85 Pully, well they went ahead and told me that the pully wouldn’t work with my set up and that I would need a 2.5 pully on my stock hellcat, to even reach my desired goal. I became puzzled because if I remember correctly the stock supercharger shouldn’t go below a 2.75 pully or else there would be issues down the road due to pushing the supercharger to its limit and these guys are recommending a 2.5 pully , now I’m reaching out to y’all and get your opinion if what they were asking me to get install was setting me up for failure or I’m just overthinking it and should go and get it done. Please and thank you
(Also I can list all my current parts sitting in my garage, ready to be installed to get an idea of all the mod’s plus I would be running full e85).

 

[Doublewide]

List the other planned mods. What they may have meant is not that the 2.85 pulley won't work, it's just that it probably won't reach your 900whp goal.

 

[Bay650]

List the other planned mods. What they may have meant is not that the 2.85 pulley won't work, it's just that it probably won't reach your 900whp goal.

Currently have a dual fore innovations fuel package, 10% super damper, crank pinning kit, brisk spark plugs, JLT Intake, long tube headers, 1200Cc FIC injectors, green HD belt, 180 thermostat, fore fuel rails with the full e85 adapter kit and other little things.
My Main concern came from the 2.5 pully putting a shit ton of stress on the engine.

 

[Xylander]

To be fair, any pulley is going to shorten the lifespan of the blower. How much and how soon is entirely up to the car gods. Of course, the more aggressive the pulley, the more angry the car gods will get.

 

[Doublewide]

Currently have a dual fore innovations fuel package, 10% super damper, crank pinning kit, brisk spark plugs, JLT Intake, long tube headers, 1200Cc FIC injectors, green HD belt, 180 thermostat, fore fuel rails with the full e85 adapter kit and other little things.
My Main concern came from the 2.5 pully putting a shit ton of stress on the engine.

Good set up but you'll need at least a 2.75 upper to hit your 900whp. Or you could keep the 2.85 and port the blower and get there.

 

[Blacksheep6]

Ditch the FIC 1200 and get a set of ID1300. ID1300 are much easier to tune.

 

[Bay650]

Ditch the FIC 1200 and get a set of ID1300. ID1300 are much easier to tune.

if only I could return them but i bought them 2 months ago.

 

[Speedy]

You need to decide how important having a 900rwhp Cat is to you. Are you planning to race and that number is what you've calculated you need to compete in a certain class or did you just want a 900rwhp car? That's approaching the level of having parts start to beg for mercy from what I'm seeing.

There is a critical speed for the supercharger and a 2.85 upper and 10% lower is the limit to stay under that speed. I wouldn't run a 2.5 upper with even a stock lower and people I've seen test pulleys at the track actually started to go slower above a 2.75 pulley. They started to generate too much heat.

I'd pass on the Brisk plugs. They tend to get fouled more often than others and changing plugs on a Hellcat can be entertaining. Some run stock plugs without issue and if they do change them it's NGK 2309 plugs. I'm on stock plugs with E85 and a 2.72 upper pulley. I don't know how much power it makes but runs 140+ in the 1/4 mile.

 

[shazzes5]

You need to decide how important having a 900rwhp Cat is to you. Are you planning to race and that number is what you've calculated you need to compete in a certain class or did you just want a 900rwhp car? That's approaching the level of having parts start to beg for mercy from what I'm seeing.

There is a critical speed for the supercharger and a 2.85 upper and 10% lower is the limit to stay under that speed. I wouldn't run a 2.5 upper with even a stock lower and people I've seen test pulleys at the track actually started to go slower above a 2.75 pulley. They started to generate too much heat.

I'd pass on the Brisk plugs. They tend to get fouled more often than others and changing plugs on a Hellcat can be entertaining. Some run stock plugs without issue and if they do change them it's NGK 2309 plugs. I'm on stock plugs with E85 and a 2.72 upper pulley. I don't know how much power it makes but runs 140+ in the 1/4 mile.

Speedy, what are your plugs gapped at?

 

[Unholy707]

Good set up but you'll need at least a 2.75 upper to hit your 900whp. Or you could keep the 2.85 and port the blower and get there.

You need to decide how important having a 900rwhp Cat is to you. Are you planning to race and that number is what you've calculated you need to compete in a certain class or did you just want a 900rwhp car? That's approaching the level of having parts start to beg for mercy from what I'm seeing.

There is a critical speed for the supercharger and a 2.85 upper and 10% lower is the limit to stay under that speed. I wouldn't run a 2.5 upper with even a stock lower and people I've seen test pulleys at the track actually started to go slower above a 2.75 pulley. They started to generate too much heat.

I'd pass on the Brisk plugs. They tend to get fouled more often than others and changing plugs on a Hellcat can be entertaining. Some run stock plugs without issue and if they do change them it's NGK 2309 plugs. I'm on stock plugs with E85 and a 2.72 upper pulley. I don't know how much power it makes but runs 140+ in the 1/4 mile.

 

[Unholy707]

I have a 2.69 upper, but I like to party 😎

 

[Unholy707]

You need to decide how important having a 900rwhp Cat is to you. Are you planning to race and that number is what you've calculated you need to compete in a certain class or did you just want a 900rwhp car? That's approaching the level of having parts start to beg for mercy from what I'm seeing.

There is a critical speed for the supercharger and a 2.85 upper and 10% lower is the limit to stay under that speed. I wouldn't run a 2.5 upper with even a stock lower and people I've seen test pulleys at the track actually started to go slower above a 2.75 pulley. They started to generate too much heat.

I'd pass on the Brisk plugs. They tend to get fouled more often than others and changing plugs on a Hellcat can be entertaining. Some run stock plugs without issue and if they do change them it's NGK 2309 plugs. I'm on stock plugs with E85 and a 2.72 upper pulley. I don't know how much power it makes but runs 140+ in the 1/4 mile.

104 on the brisk plugs, junk. Lots of issues with them. Go with ngk 2309

 

[Unholy707]

Ditch the FIC 1200 and get a set of ID1300. ID1300 are much easier to tune.

Really? I’ve heard literally the exact opposite.

 

[Unholy707]

Currently have a dual fore innovations fuel package, 10% super damper, crank pinning kit, brisk spark plugs, JLT Intake, long tube headers, 1200Cc FIC injectors, green HD belt, 180 thermostat, fore fuel rails with the full e85 adapter kit and other little things.
My Main concern came from the 2.5 pully putting a shit ton of stress on the engine.

That green belt will get you to 900 for sure

 

[Speedy]

Speedy, what are your plugs gapped at?

Stock gap. I can't remember what it is at the moment but it's literally how the plugs came in the Redeye engine I put in the car as a long block.

 

[Doublewide]

Really? I’ve heard literally the exact opposite.

I know Tim barth said that same thing to me. He highly encouraged the usage of ID over FIC

 

[Doublewide]

I have a 2.69 upper, but I like to party 😎

Pussy.. I run a 2.65 😉

 

[Unholy707]

I know Tim barth said that same thing to me. He highly encouraged the usage of ID over FIC

I think it’s tuner preference. Some tuners have the data for the injectors dialed in, some don’t. I know FIC provides injector set unique data for scaling. iD does not, and they didn’t have the data out for the newer id1300x2’s (what I have) for a long time, and a lot of people had issues with them at first. FIC are easier to tune and have better idle characteristics I hear. And most will never need 1300- I was at 56% injector duty cycle putting down 906whp.

 

[Unholy707]

I think it’s tuner preference. Some tuners have the data for the injectors dialed in, some don’t. I know FIC provides injector set unique data for scaling. iD does not, and they didn’t have the data out for the newer id1300x2’s (what I have) for a long time, and a lot of people had issues with them at first. FIC are easier to tune and have better idle characteristics I hear. And most will never need 1300- I was at 56% injector duty cycle putting down 906whp.

Plug and play tables for fuel make a big difference

 

[Unholy707]

Stock gap. I can't remember what it is at the moment but it's literally how the plugs came in the Redeye engine I put in the car as a long block.

I can’t remember and should since I love pain and replaced my
Plugs twice already. Having the entire engine stripped to basically a short block helped the 2nd time