[Hellcat1000]

I have a ported blower with a 2.65 griptec upper ONLY. Also have an aad adjustable idler. I’m running a K100572hd belt and it is slipping so bad. I’ve been reading different belt sizes and it’s just not making sense lol feel free to chime in

I’d like to run the rpm belt I just don’t know what size

 

[Slowpoke387]

Should delete one of these posts.

 

[Hellcat1000]

Should delete one of these posts.

Not exactly sure how to do that lol

 

[Himmelkat]

Better to have a bigger upper AND lower pulley. More area to have friction on belt, yes?

 

[Himmelkat]

Not exactly sure how to do that lol

belt cross-reference guide.

 

[Hellcat1000]

Better to have a bigger upper AND lower pulley. More area to have friction on belt, yes?

Bigger upper means less boost! We want all the power haha

 

[Himmelkat]

I know, but maybe a 2.somethingabitbigger and a 10 percent-larger lower would reduce belt slip for same boost.

 

[Himmelkat]

Plus having that wonderful high-friction coating put on the pulley that someone does somewhere.

 

[707F6F]

How do you know it's slipping?

 

[Hellcat1000]

How do you know it's slipping?

Belt dust all over . And you I feel the car fall out of boost up top.

 

[707F6F]

I ask because I'm planning the same pulley combo minus the Idler pulley. I was told it wasn't needed with a 2.65 from my tuner.

 

[ScLeCo]

Here you go. I know, Google is hard.

https://www.gates.com/content/dam/gates/home/knowledge-center/resource-library/application-specs/428-3291-rpm-belt-dimension-list-newbrand.pdf

 

[Linda's Hell Cat]

@Hellcat1000 I would give HHP sales a call 1-888-894-1115 and ask them what they recommend for the 2.65, I'm sure they would know.
They also have a place to post now where you can ask a question. Probably get an answer during business hours.

In this link following to the bottom with the description for the Upper Pulley it shows other sizes, but a 265 can be purchased.
K100572hd is for a 2.75 an 2.85, and changes with other sizes.

GripTec 10 Rib L2V Black Pulley & Hub Kit for Hellcat 6.2L Supercharger - HCXXXBV2KA

GripTec 10 Rib L2V Black Pulley & Hub Kit for Hellcat 6.2L Supercharger - HCXXXBV2KA

highhorseperformance.com

Linda