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View Full Version : Pulley swap question......


FormulaMarauder
08-31-2009, 09:30 PM
I want to go to a smaller pulley on my Vortech A2A and squeeze a few more out of it. Running around 9psi as is w/the larger pulley, but want to go smaller.
New tune? Air fuel adjustments? What else in regards to complimentary support needs to be done?

My ATI P1SC was a swap and go, and so was the MP112 on my Grand Prix.
Any different here?
Thanks in advance guys.
Rocknthehawk
08-31-2009, 09:55 PM
FYI Hot-Rauder is looking to swap for a larger pulley on his V1 T-trim, in case you're interested.
FormulaMarauder
08-31-2009, 10:28 PM
FYI Hot-Rauder is looking to swap for a larger pulley on his V1 T-trim, in case you're interested.

I have a smaller pulley, thanks. Just curious if I need a re-tune.
DOOM
08-31-2009, 10:36 PM
You got the mod bug bad bro. :D :burnout:

:beer:
bob6364
09-01-2009, 04:07 AM
I can't remember are you running the stock bottom end? Your at a safe level right now if you are... But to answer your question no you cannot just swap pulleys and drive away,you need to get it retuned. If you want to "At my signal.....unleash Hell." then you need to put a forged bottom end in the bad boy and really let your tunner goto wor on it.....
BODYMAN
09-01-2009, 04:55 AM
I want to go to a smaller pulley on my Vortech A2A and squeeze a few more out of it. Running around 9psi as is w/the larger pulley, but want to go smaller.
New tune? Air fuel adjustments? What else in regards to complimentary support needs to be done?

My ATI P1SC was a swap and go, and so was the MP112 on my Grand Prix.
Any different here?
Thanks in advance guys.

you will need a new tune but make sure you can push plenty of fuel into it what fuel pump are you using now?
FormulaMarauder
09-01-2009, 06:35 AM
I have the GT500 pump and a Kenne Belle Boost a Pump. Fuel isnt a problem.
BODYMAN
09-01-2009, 06:53 AM
I have the GT500 pump and a Kenne Belle Boost a Pump. Fuel isnt a problem.

yep fuel wont be a problem with what you got! get r done
BODYMAN
09-01-2009, 09:01 AM
What Tranny do you have? stock? I found out quick in my 1st one after it went to 12lbs and the stall was installed the tranny went quick
MM_BKK
09-01-2009, 01:11 PM
How much smaller pulley do you want to go or how much more boost do you want?

I would ask your tuner since he knows the most about your tune and A/F, pump and injector duty cycles and MAF counts.
CWright
09-01-2009, 01:16 PM
Yea it bit the crap out of me. Or lets say "money" out of me. Dennis has my car now making mods. This genleman has been following my mod updates too close. LOL!!!! It SUX to get bit. It always cost me.:D



You got the mod bug bad bro. :D :burnout:

:beer:
RR|Suki
09-01-2009, 01:22 PM
If it's gonna put you up a couple PSI you shouldn't need a tune, but that depends on how your scales now are done
FormulaMarauder
09-01-2009, 03:14 PM
If it's gonna put you up a couple PSI you shouldn't need a tune, but that depends on how your scales now are done
Thinking going from 9 to 12.
offroadkarter
09-06-2009, 11:49 AM
Thinking going from 9 to 12.


It would be safest to get a retune...

400 dollar tune or 4000 dollar motor, your call