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Discussion Starter · #1 ·
Hello all,
I looked around but didn't find my answer. Does anyone know the correct belt to use with the stock lower and 2.85 Griptec upper? Almost have all the parts needed for my build. Just need a few other things. My build is as follows

2.85 upper
Fic 1200 injectors
Dual in tank pumps
LMI intake
180 Stat
Pinned lower
Blower spacer/blanket (still deciding)
3.09 rear
DSS 1 piece drive shaft
Diff brace
Cradle lock out kit
Mickey Thompson Et Street R
New computer or unlock the stock?

Dusterhauff trans/flex tune with a second track/race tune with second pulley.

What do you guys think? Am I missing anything? Will probably start installing parts this weekend. Can't wait to really unleash this thing. Still trying to decide between Steve white pumps or tapped performance. Some say SW set up uses small pumps. Any thoughts?

Thanks in advance.
 

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Blower spacer/blanket (still deciding)... this is a seriously great investment and I cant recommend more. Also since you're pinning the crank I would recommend a 10% lower with maybe a larger upper instead. but the spacer blanket is great, youre going to add a lot of heat with more boost.
 

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Discussion Starter · #4 ·
Blower spacer/blanket (still deciding)... this is a seriously great investment and I cant recommend more. Also since you're pinning the crank I would recommend a 10% lower with maybe a larger upper instead. but the spacer blanket is great, youre going to add a lot of heat with more boost.
What is the benefit of a larger upper and underdrive? Same boost in the end or more
 

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What is the benefit of a larger upper and underdrive? Same boost in the end or more
The benefit to doing a larger upper and 10% lower instead of a smaller upper only is that you get better belt wrap on the upper pulley without the need to use additional idlers increasing the chance of additional friction and unwanted tension
 

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I’d recommend a 10% ati lower and a 3.10 upper griptec pulley and also recommend the blower spacers/ blanket also.
 

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Discussion Starter · #17 ·
Do I need an additional tensioner pulley with a 2.85 upper and stock lower?
 
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