First one

**5.0notch** · 01-01-2003, 12:07 PM

Well Looks like i will be the first A-trim guy on here. I am new to the supercharger world and will have lots of questions. I actually havent gotten to drive my car with the supercharger on it due to being in the middle of my 5lug 4 wheel disc conversion. Well hope this site really takes off

**MoDo** · 01-01-2003, 04:18 PM

a-trim is a great start... i did the same and eventually bought the ho upgrade kit from vortech (alum discharge, bypass vavle, msd btm, t-rex, larger crank pulley, 8 rib blower pulley). recently i had the impeller changed to the s-trim.

good luck with the blower, its a lot of fun

**91GTFiveO** · 01-02-2003, 02:56 AM

I just installed an A-trim (actually the new SC-trim replacement to the A) a couple months ago and I love it! Will be installing more go fast goodies soon in the neverending quest for more ponies.:D

**5.0notch** · 01-04-2003, 12:07 AM

actually mine is the new sc trim also. one question, how much can you get the ho upgrade for and how much boost does the bigger crank pully add? thanks

**91GTFiveO** · 01-04-2003, 12:42 AM

I think the HO upgrade is around $500 (by sending the unit back to Vortech to convert to S-trim status). One of the A-trimmers at the Corral site (with the straight vane impellers) indicated he was getting 7.5 - 8 psi with a 7" crank pulley and powerpipe. I'm guessing the sc-trim may get alittle more but not sure. I'm gonna get the 7" pulley in the next couple of months.

**MoDo** · 01-04-2003, 04:04 AM

the ho upgrade is different from the impeller upgrade.

i paid ~500 for the ho kit, and i paid 814 for the s-trim upgrade

**Shifter** · 01-04-2003, 12:10 PM

I'm gonna get the 7" pulley in the next couple of months.

I've got mine, want to see a pic??? HAHAHA!!!!!!

**91GTFiveO** · 01-04-2003, 02:09 PM

Originally posted by Shifter
I've got mine, want to see a pic??? HAHAHA!!!!!!

Damn Shifter! Well I'll wait a little. I have too many other parts awaiting install and no time! Looking to install my in-tank high-pressure walbro and various other fuel system upgrades prior to increasing boost. And a couple of induction parts. Hehe

Did you get that bypass installed yet?

MoDo: What's the HO upgrade and what does it do?

**MoDo** · 01-04-2003, 02:40 PM

Originally posted by 91GTFiveO
Damn Shifter! Well I'll wait a little. I have too many other parts awaiting install and no time! Looking to install my in-tank high-pressure walbro and various other fuel system upgrades prior to increasing boost. And a couple of induction parts. Hehe

Did you get that bypass installed yet?

MoDo: What's the HO upgrade and what does it do?

HO upgrade consists of the following parts: 8rib 3.33" blower pulley / 6.87" 8 rib crank pulley, t-rex, aluminum discharge and bypass valve, msd btm

**91GTFiveO** · 01-04-2003, 05:58 PM

Originally posted by MoDo
HO upgrade consists of the following parts: 8rib 3.33" blower pulley / 6.87" 8 rib crank pulley, t-rex, aluminum discharge and bypass valve, msd btm

What kind of boost were you seeing before you upgraded to S-trim status?