Need more boost

[SN95GTS]

Ok heres the deal 95 mustang 5.0 made only 5-6 psi boost with a sn2000 I want more boost has stock impeller gonna replace impeller but I hear other people making 10 psi. Supercharger is in good shape I bought it new from craig what do I need to do to make this thing run. Car is getting new 342 and trickflow head's and everything else inbetween want car to fly. please help

[speedytang]

To skip ahead, if your going with a 342 you will probably only see 4-5psi no matter what pulley you use to spin the Supercharger. You can drop the pulley to a 4" but if you shift over 5400rpm you will be at the max rpm for the unit. The 'SN' unit was designed for 5-6psi and when you start spinning the unit to get more boost you will be taking a risk of hurting the internals.

[SN95GTS]

So what you are telling me is I need to sell the supercharger and just buy a new one or a turbo kit? I don't know what else to do I hear people doing a vr4 upgrade but don't know where to find one been searching ebay and nothing any idea's would be appriciated.

[blackmach1]

Give craig connely a call at paradise wheel.He might have a vr4 upgrade.He told me that the vr4 is good for 1500cfm.Almost double what you have now

[speedytang]

No new VR4 kits for over 2 years now and don't count on them being made again. The VR4 is the best option but since that is a shot in the dark your best bet is a Novi 2000 or Vortech 'S' or Turbo when you are trying to boost the 342.

[SN95GTS]

Well I'll stick it on after I break the engine in and see what it does and go from there if it helps some I may replace the impeller and run it till she comes apart. Speedy do you know anyone with a used VR4 or any ideas? Thanks for the help.

[speedytang]

Impeller is not worth the money your 342 needs at least 1150cfm at max torque rpm and your not going to get that with a modified impeller. The VR4 market is dry now and even at the swap meets I have not seen any.