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Discussion Starter · #1 ·
I bought a quick change pully setup used, the pully that was on the snout was 2.8 inches. How much boost will this make with a stock lower?, Since I have the complete snout, should I remove the hub from the snout or just swap snouts?.

The seal for the snout on the blower Anaerobic(meaning it will not dry unless there is no air around it)?

like permatex 51531?
 

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Even Then I Was Old Skool!
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The 2.8" upper pulley is about a 2# increase in boost (I know 2.76" is), so with a stock lower, you should see 10# on a real boost gauge. Ignore the factory gauge, its useless. Most folks will tell you you're going about it the wrong way... you'd get better results with a stock upper and a 2# or 4# lower. Belts tend to slip as you go smaller on the supercharger pulley.

The best serpentine (grooved-style) upper is the Billetflow Non-Slip designed by Jim Reichard of Reichard Racing. Combine that with a Magnum Powers Idler Bridge and your belt slip should be a non-factor.
 

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Discussion Starter · #3 ·
The 2.8" upper pulley is about a 2# increase in boost (I know 2.76" is), so with a stock lower, you should see 10# on a real boost gauge. Ignore the factory gauge, its useless. Most folks will tell you you're going about it the wrong way... you'd get better results with a stock upper and a 2# or 4# lower. Belts tend to slip as you go smaller on the supercharger pulley.

The best serpentine (grooved-style) upper is the Billetflow Non-Slip designed by Jim Reichard of Reichard Racing. Combine that with a Magnum Powers Idler Bridge and your belt slip should be a non-factor.
Thanks for the heads up.

I have read that belt slip is an issue. I will try it for a little while then i will upgrade the pully system.
 

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Swapping snouts means you will not need a press or a pulley tool, so it is easier to do(and cheaper). Don't worry too much about belt slip with a stock lower. My first round of mods was a 2# upper, a Predator programmer, a cold air kit, a cat back and a VB. Added 555R DRs and long bars. Truck was perfect for street fun then. Ready to do this to my second truck now(just need a bit of time to do it) Since then the first truck has gotten a bit rediculous...


Jim
 
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