Vmp 2.3 pulley/belt guide

[Dameonashbolt]

Being from the uk there arnt many tuners and it's hard to just swap pulleys about.
I'm aiming for around 19-20 psi on a stock lower. So after a guide really to what size upper I need. Plus what side belt needed

 

[Bdubbs]

Some factors will play a role in boost. Elevation and headers are a couple.

I'm at sea level. With stock manifolds and a 3" upper I hit 18 psi. If you plan on running 92-93 fuel I wouldn't go past 18 psi and 17* timing.

Long tube headers you'll generally drop 1-1.5 psi. I dropped 1 psi. So keep that in mind, here is pulley combos with headers.

3" upper = 17lbs
2.8" upper = 19lbs
2.6" upper = 21lbs



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[Dameonashbolt]

In the uk we have access to 98ron at the pumps. I have mac headers and pro chamber so.i should be looking at roughly a 3" or 2.8"

 

[Bdubbs]

In the uk we have access to 98ron at the pumps. I have mac headers and pro chamber so.i should be looking at roughly a 3" or 2.8"

Cool, 98 octane is pretty good. VMP makes a 2.9 pulley as well. You could probably run a 2.8 pulley with that fuel though.

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[V6&V8SHO]

98Ron is 93.5 octane if google serves me right.

 

[Dameonashbolt]

Yes about 94... I didnt think about the difference between ron and octane