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Jan 20, 2007 | 08:39 PM

sick240

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From: irving

how much

so how much spray will a stock ls1 hold on stock fuel system.

Jan 20, 2007 | 08:55 PM

blackn2oss

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i been spraing 1 175 shot 4 bout 6 or 7 mounths and no problems but i also have it tuned

Jan 21, 2007 | 01:23 AM

sick240

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From: irving

oh yeah, that more than i would have thought it would hold.

Jan 21, 2007 | 01:23 AM

sick240

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From: irving

dry shot?

Jan 21, 2007 | 01:48 AM

Blk97WS6

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Quote:

Originally Posted by blackn2oss

i been spraing 1 175 shot 4 bout 6 or 7 mounths and no problems but i also have it tuned

im sorry but spraying a 175 shot on the stock fuel pump and or injectors is like playing with dynomite, regardless if its tuned or not. tuning a car is not going to protect your fuel pump or injectors from failure.

IMO you need a new fuel pump for anything over a 100 shot. I sprayed a 75 shot with the stock fuel pump for about 5 months. then jumped up to a 100 shot after getting my new fuel pump.

Jan 21, 2007 | 01:50 AM

sick240

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From: irving

i have always ran wet system so never real had to worry about the fuel.

Jan 21, 2007 | 01:58 AM

Blk97WS6

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From: Northern, VA

Quote:

Originally Posted by sick240

i have always ran wet system so never real had to worry about the fuel.

a wet system is even MORE of a reason to replace the stock fuel pump. On a wet kit the car relays on the pump to provide the extra fuel, with a dry kit the car depends on the injectors.

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Jan 21, 2007 | 02:44 AM

Blk97WS6

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From: Northern, VA

Quote:

Originally Posted by Omega Doom

which fuel pump do you recommend for a 100,125,150,and 175 shot from a dry kit?

a walbro 255 will do the job.
remember also with a dry shot that high(150+) you need to worry about your injectors, as this is where the fuel comes from on a dry kit.

Jan 21, 2007 | 11:21 AM

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Robert56

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Quote:

Originally Posted by sick240

i have always ran wet system so never real had to worry about the fuel.

Sick240, wet or dry, the stock pump is generally considered good for about 450hp overall if in good condition. On a dry the injectors must be sized for your overall hit, and math is in the wet vs dry thread. A couple ways to tell if your running out of pump, if you are going lean at your highest demand area, or if you you are dropping pressure at highest demand. A higher mileage car, replacing the pump with a Racetronics kit is a good idea for safety, and do the filter also.
Robert