I just switched from the Ottp st2 to a 2.6 and meth last weekend and wish I would have done it a lot sooner it is awsome

 

I'm not sure that's what anyone would want. what he means is he want's the most efficient boost up top for maximum hp both low and high.

 

Any opinions on what meth/water mixture works best?

 

i use 50/50 but i have an lnf

 

same here

 

im going to a 2.6" from a 2.7" ...just gotta find me a pulley

but to help the op a bit more and my self do you have to shave the snout if you slap a 2.6 " on there, for a GM 4 Bolt Hub, when i put the the 2.7 " on there it seemed like there's more space on there...ny ideas ? oh sorry to thread jack btw !

 

Haha it's all good. Some guys have had to shave and some guys havent. The best way is just to get the pulley and size it up. I'm going to have to on mine so thats my long weekend project haha.

 

psshh, I shaved my snout on a bench grinder. buzz.

 

nice

 

I had to shave my m62 snout for a 2.7. I just recently went through the same dilema with a 2.6" pulley, just not with the m62

 

I ran 2.6 and 2.5 on my m62 for a couple of years with no problems except, I went through 3 blowers. Not sure if they went because of over spinning or because I was spraying meth through it, or maybe a combination of both. But each blower would last about 30,000 miles. So u decide if it's worth it, to me I didn't mind buying blowers every 30,000 miles because I loved the low end torque. I got a tvs now on a 2.7 but I feel that the low end torque on the m62 was better

 

Do you have to run a tensioner for a 2.6? I'd imagine you would get belt slip with just a stage2 belt. Also can anyone post pictures of their shaved snouts?

 

Then you need a new tune.

Red - 2.7" M62
Blue/Green - 2.9" TVS

 

I just finally installed my 2.6" last Friday and I love it! Wow it pulls way harder. But I also had full exhaust and a CAI that I put on and wasn't tuned for yet. I bought an oversized tensioner from ZZP but it fits like crap. It hits the tensioner itself it's so big. So I tried it with the stocker and no slip. 19 psi

 

You have to grind the oversize tensioner pulley to fit but if it's not slipping then don't worry. I ran a 2.6 with no other mods than 60's for over a year no problem.

 

Really? No slip? I get slip sometimes with my 2.8. Granted when its humid out, but still.

Yeah, ZZP shows a quick 7-picture .gif file for that.

Is that the ZZP tool? Also, did you run an adj tensioner or oversized or none at all?

 

with the zzp modular system and their 2.6 you don't have to machine it...i didnt have to when i installed mine...

 

Really?? On their website it says down to a 2.7 pulley... I currently run the modular setup on a 2.8 tho. If thats true, that would be awesome.

 

there was a very small gap but i didn't need too...there was no rubbing anywhere

 

I see you have a TVS...are we talking about that or the M62?

 

Ya I was really surprised it doesn't slip. But from what I read it seemed to be a 50/50 chance of it slipping. You slip with a 2.8"? That doesn't seem right, even with humidity.

 

lol ebristol is everywhere with dyno sheets hahaha

 

Lol I know. Someone says something or an argument breaks out. BAM ebristol shows up with dyno sheets and real proof. I swear he must have a dyno sheet for almost any discussion

 

lol.

 

for each pulley size u go down how much more cfm are u pushing into the motor and is there a way to roughly determine how much that will effect the afr?