Thread: At what mod point is the stock pump not big enough?

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  1. #1 At what mod point is the stock pump not big enough? 
    GTX Level Member Sudden's Avatar
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    Is there a point in your mods where you need to replace a good stock pump. Not for E85, there isn't any around here.
    2005 Grand Prix GTP CompG. Overkill PCM, ZZP S2 I/C, ZZP MPS W/ 3.3" pulley, 1.9 YT rockers, 42.5# injectors, Moroso wires and AL104 plugs, 180 Thermostat, LS4 MAF.
    Front PLOG, Rear PLOG, crossover, all ceramic coated. ZZP 3" Downpipe and 3" exhaust pipes with Borla S-Type mufflers.
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  2. #2 Re: At what mod point is the stock pump not big enough? 
    Killa Bee Scottydoggs's Avatar
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    we have the same mod list but im on a 3.2 pulley and stock pump, not even a rewire. all stock crap.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  3. #3 Re: At what mod point is the stock pump not big enough? 
    GXP Level Member GTPpower's Avatar
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    The stock pump should support upper 300's for power on pump gas.


    2001 GTP Drag Car - XPZ, Tischler heads, Upsidedown M90 IC'd, e85, Gen V, 2.3 w/ 5%OD
    2005 F350 6.0 - studded, deleted, tuned
    2001 GTP - cam, headers, nitrous, stock trans - 11.83 @ 116 <$2k in mods - sold
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  4. #4 Re: At what mod point is the stock pump not big enough? 
    GTX Level Member Sudden's Avatar
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    That should be good for me. I'm doing a rewire and didn't want to replace the pump that I can't afford unless I have too. Thanks all.
    2005 Grand Prix GTP CompG. Overkill PCM, ZZP S2 I/C, ZZP MPS W/ 3.3" pulley, 1.9 YT rockers, 42.5# injectors, Moroso wires and AL104 plugs, 180 Thermostat, LS4 MAF.
    Front PLOG, Rear PLOG, crossover, all ceramic coated. ZZP 3" Downpipe and 3" exhaust pipes with Borla S-Type mufflers.
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  5. #5 Re: At what mod point is the stock pump not big enough? 
    GrandPrix Junkie ItHurtz's Avatar
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    Its good for low 4's
    2000 GTPT Sold-brandonhall10 built trans
    2009 Challenger SRT8
    http://www.grandprixforums.net/threa...uestion.....no
    Expert at being gay.
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  6. #6 Re: At what mod point is the stock pump not big enough? 
    GrandPrix Junkie CrazyGuy03's Avatar
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    I'm on a new stock pump no rewire with an aftermarket pump on the shelf.
    2003 Buick Regal GSX lots of mods - click here to see latest build - http://www.grandprixforums.net/threa...ld-for-the-gsx

    *For Reference - Does not have a Zack Howard Cam - It's an Intense Stage 3 - Thank You*
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