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Thread: Underdrive Pullies

  1. #1
    BlAzE iT uP! Eggleston69's Avatar
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    Underdrive Pullies

    I was considering on Getting some new underdrive billet pullies for my blaze. IT's a 4.3. Will there be a difference with the pullies or just engine dress up. Advertisement claims 10hp? bull or no?
    89 2dr Blazer
    -Engine- K&N FIPK, Poweraid Throttle Body Spacer, 700r4 w/ Corevette Servo and Stage 2 shift kit.
    -Exterior- Updated Chrome Grill, H4 Headlight kit, Clear Corners, Clear Bumper Lights, Euro's, Belltech 3/4, Eagle Alloys type 218 wrapped in BFG Rubber
    -Interior/Beats- !Coming Soon!

  2. #2
    Registered User ZZ4Blazer's Avatar
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    I noticed a little difference on my truck in the higher rpms. But, then again, I"ve got a V8 and I spin it to 6k.
    Jim 94 Stepside
    ZZ430 clone V8
    NX kit in the works
    Tremec T56 6 speed
    8.5" rear
    Quote Originally Posted by Harley
    Go before show any day of the week.

  3. #3
    Senior Member bigjsp's Avatar
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    I have seen troubles getting enough amperage from the alternator at idle, particularly if you've got A/C and a stereo.

    They are just noticable, but remember a couple of "just" noticable improvements make a NOTICABLE improvement

  4. #4
    BlAzE iT uP! Eggleston69's Avatar
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    i never thought of it that way
    89 2dr Blazer
    -Engine- K&N FIPK, Poweraid Throttle Body Spacer, 700r4 w/ Corevette Servo and Stage 2 shift kit.
    -Exterior- Updated Chrome Grill, H4 Headlight kit, Clear Corners, Clear Bumper Lights, Euro's, Belltech 3/4, Eagle Alloys type 218 wrapped in BFG Rubber
    -Interior/Beats- !Coming Soon!

  5. #5
    Registered User ZZ4Blazer's Avatar
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    Originally posted by bigjsp
    I have seen troubles getting enough amperage from the alternator at idle, particularly if you've got A/C and a stereo.

    They are just noticable, but remember a couple of "just" noticable improvements make a NOTICABLE improvement
    I dont' have a/c, but if I have my fans on, my stereo beating, and my lights on (100/90 wt conversion), mine will start getting low. I've never had a real problem, just I can watch my guage drop.
    Jim 94 Stepside
    ZZ430 clone V8
    NX kit in the works
    Tremec T56 6 speed
    8.5" rear
    Quote Originally Posted by Harley
    Go before show any day of the week.

  6. #6
    Burnout!!! badassblazer01's Avatar
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    I bought a set for my v-8, but I also bought a 180A alternator go along with them. So that should help out some.

  7. #7
    Registered User ZZ4Blazer's Avatar
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    Oh yeah, I've got a Powermasters 140 amp alt also. Its got a pretty good idle output. One of the highest I've found.
    Jim 94 Stepside
    ZZ430 clone V8
    NX kit in the works
    Tremec T56 6 speed
    8.5" rear
    Quote Originally Posted by Harley
    Go before show any day of the week.

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