I am running a carb setup with a mallory regulator on the factory Fuel pump. Well I am adding a 150 shot of hose and need more fuel. Can I unplug the in tank pump and just run a holley blue pump in-line without taking out my in take pump???

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Bright red 87 GTA with I have stock 3.27 gears,stock converter,B&M shift kit, TRW forged 9.75:1 pistons,comp cams pushrods, edelbrock valvesprings, 462 camel hump heads with 2.02in/1.60ex redrilled for angled plugs, 3 angle valve job, ported and polished, performer RPM intake, mallory fp regulator, edelbrock 750 CFM carb, hei ignition(new) with 10,000 volt coil,No cat, flowmaster 2 chamber mufflers, hedman full length headers, edelbrock cam with 488/501

Best Run 1/8 mile 8.62 at 84MPH, Consistantly run 8.8's

 

Y not use the factory in tank pump for the nitrous and then install a new 3/8 fuel line and a hiflow mechanical 6/9 psi pump for the carb.
It will have more than enough flow and just enough pressure, run quiet, doesn't need a regulator, costs less and will outlast that holley blue pump.
Those holley blue pumps don't last long on the street, They were never designed to run continuously and always fail. Not to mention
the flooding problems. (pressure creep throu the regulator).
Note you can use your factory intank fuel pump for NOS as long as it can mantain 5 to 6 psi while flowing the NOS fuel thru the fuel jet. Should be fine for 200 hp shot.
In any rate don't combine the two on the same fuel line. Don't forget to use a hi flow fuel filter on both fuel lines. When it comes to Nitrous plumbing, cleanliness is next to godliness....

[This message has been edited by F-BIRD'88 (edited November 06, 2001).]

 

You are probably right, there is not enough fuel line to feed both. I cant run a mechanical fuel pump, however, because the spot on my block has been welded.

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Bright red 87 GTA with I have stock 3.27 gears,stock converter,B&M shift kit, TRW forged 9.75:1 pistons,comp cams pushrods, edelbrock valvesprings, 462 camel hump heads with 2.02in/1.60ex redrilled for angled plugs, 3 angle valve job, ported and polished, performer RPM intake, mallory fp regulator, edelbrock 750 CFM carb, hei ignition(new) with 10,000 volt coil,No cat, flowmaster 2 chamber mufflers, hedman full length headers, edelbrock cam with 488/501

Best Run 1/8 mile 8.62 at 84MPH, Consistantly run 8.8's