Ok this is the dumbest pulley question yet and its a short thread so i hope to get some responses at least. Theres two good 2.8'' pulleys that i know of for the GM stage 2 kit, the SFPH and the pulleyboys. I know a lot of people are running the pulleyboys with their stage 2 kit because it fits on the stage 2 hub. BUT.... i hear that the SFPH one is non-slip which makes for added boost. So heres my questions.....
1) Are they the same thing?
2) Are they both non-slip?
3) What makes a pulley non-slip? Is it the extra thick wedge things on the sides that make it grip better?

Thanks in advance for your help

Edit: 4) How come the SFPH one is like 60 bucks more? I guess that means that it is much better quality in terms of belt slip huh? Can someone who has the SFPH one with stage 2 answer my question as opposed to someone with a pulleyboys? Both answer the question please

Second edit: 5) How much boost exactly are you running with a stage 2 and 2.8? Pulleyboys and SFPH please specify?

 

I can answer #3, it has little cuts in the ridges. If the PB doesn't have little cuts in the ridges then #1 and #2 are both a no.

 

people that are slipping when running a 2.8 are likely not running the right pulley belt. The one that comes with the GM stage 2 has insane monkey grip so dropping down to a 2.8 aint an issue. In fact the gm stage 3 that is rumored to be released soon is said to come with a 2.8" pulley. That being said if you have the GM stage 2 it would likely be in your interest to get the pb 2.8

1) they are the same size so yeah i guess.
2) yes
3) the groves man these things know how to harmonize ... I mean yeah the groves

 

Huh?

 

Bump

 

lol I was wondering if someone was gonna get confused.

http://www.pulleyboys.com/lsj28.html

 

yes this is all well and good but unless you drive a stage 2 with 2.8 pulleyboys or the same with sfph then you can tell the difference. Or if you hold the SFPH and the pulleyboys right in front of you. My guess is that the pulleyboys isnt nonslip because they dont make a big deal of it being non slip which is why its 60 bucks cheaper.

 

I don't think anyone can tell the difference unless their **** is in fact slipping. The 2.8 from pb looks exactly like the 3" from the gm stage 2 cept for the obvious difference in size. No amount of non slippage will be the end all if the belt size is just wrong. If proper consideration is taken when installing either 2.8 there shouldn't be an issue.

 

For what it's worth, there are a number of people running the 2.8 PB pulley on stage 2, and I haven't heard a single complaint of slippage yet.

 

i was just wondering if i should get the non slip pulley to maximize my boost by maybe a half a pound or so. And i was also wondering if the pulleyboys is considered as non-slip as the SFPH

 

There yah go, proper belt sizing. But the differences between a PB 2.8 and a non slip DUB are glaring.

 

your not going to increase boost because of having a pulley labeled or designed as non slip.

 

yeah the difference can be seen no doubt but if both are installed properly there wouldn't be a difference

 

it may, you may never know when your belt is slipping slightly. If the belt is grabbing the pulley with no slip what so ever then your not going to gain boost but you'll maximize what you already have by maybe about .5-1lb of boost.

 

Agreed.

 

but this non slip configuration isn't there to add boost it is there to keep reliable contact between the belt and the pulley. the pulley will not spin any faster to create more boost if the rotational mass is the same as any other 2.8 pulley so you will never gain the kind of boost your speaking of just because the configuration is different. The only thing I can see happening is perhaps the pulley is too effecient at gripping the belt thus you may never know if the belt is about to give where as with a non slip config your likely to find it very easily