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Metco 3.2 Pulley

2203 Views 10 Replies 4 Participants Last post by  Guam_Guy, 
JP9
Anyone have experience with running the 3.2 size Metco pulley? 1-1.5 PSI increase. Just a little bit smaller than stock 3.35 size. Just curious. Thanks in advance!
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JP9
WizzaVTX said:
I and many others are running the 3.10 Metco with a 10% lower pulley

no issue with it from any experience I have had......makes the power go round and round

Mid-14 lbs of boost with my setup and tune on 93 fuel
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Nice! I wonder if just a 3.2 alone would be ok without a tune. Metco mentions on their website that people have done this
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JP9
Yeah, probably not worth the chance. Will eventually go 2.5 with dual fuel pumps, injectors, e85 and a Dusterhoff tune.
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JP9
WizzaVTX said:
That is a pretty far stretch from 3.10 swap and likely a solid performer for the track...not sure about driveability....that is a very small pulley on top. Mine is not running E, and I don't honestly see it in my future. Might want to look into other strengthening items like ARP studs as well as other items to keep the setup cool.
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The 3.10 upper and 10% lower you’re running is the equivalent of a 2.75 upper by itself. The 2.50 plan I have would be a ‘strictly track’ setup, and plan to run a 2.75 by itself normally. So around your level. How do you like the difference it’s made?
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JP9
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Guam_Guy said:
Is there somewhere I can see what combos give you? For example, 10% lower with 2.95 upper.
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Guam_Guy said:
Is there somewhere I can see what combos give you? For example, 10% lower with 2.95 upper.
Click to expand...
Here are a couple charts: the images just show safe RPM levels based on pulley setups, but can give you a relative idea comparatively.
www.hellcat.org

Pulley's vs boost

How much boost will each pulley make? 2.85 upper 10% overdrive ati crank pulley 9% innovators west crank pulley Would I need to change injectors for these? Would stock demons injectors be sufficient? Thanks
www.hellcat.org www.hellcat.org
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