351 injector specs

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Sep 3, 2005 | 12:02 AM

88f250hd

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351 injector specs

does anyone know what the specs are for the injectors in a 88 F-250 with a 5.8L (351w). I want to upgrade to larger injectors. Thanks...Blaine

Sep 3, 2005 | 01:59 AM

pfogle

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From: Oak Harbor, OH

Should be 19lbs/hr. What color are they?

Sep 3, 2005 | 02:21 AM

Matt95L

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If you don't even know what size they are why do you think you need to upgrade?The stock 19s(Orange) took my truck a long ways.

Sep 3, 2005 | 10:27 AM

TigerDan

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From: The hills of No. Calif.

Not much point to stepping up a size unless you do other mods as well. Just sticking larger injectors in isn't going to give you a big boost in power.

Sep 3, 2005 | 07:20 PM

88f250hd

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my 5.8 is a 1985, bored .030 over, has crane cam with .456/.484 lift, 260/272 duration, the heads have been ported, gasket matched, valves are same size as 1969 specs, have flowtech shorty headers, and true dual exhaust. I would like to put an aftermarket throttle body on it, so I was trying to figure out how much bigger I needed to go with the injectors to match up with the throttle body...Blaine

Sep 3, 2005 | 09:57 PM

TigerDan

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From: The hills of No. Calif.

Okay Blaine, that tells us a bit more. Have you done a mass air conversion on it? The mods you've done so far shouldn't make the Speed Density too unhappy, but if you go to a bigger throttle body and larger injectors, it might have a wee bit of trouble trying to figure out what's going on.
But, as to our original question, I think pfogle and Matt95L are right about the stock injectors being 19lbs/hr.

Sep 4, 2005 | 03:11 PM

SVTCobra306

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Yes, stockers are 19 lbs/hr. Typically good for about 300 horsepower.

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Sep 7, 2005 | 12:06 AM

88f250hd

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nope, no mass air. does run pretty strong now. will probably leave it as is. thanks for all the replies....Blaine

Sep 7, 2005 | 11:23 AM

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Kemicalburns

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From: Bend,OR

well even if you wanted to go bigger injectors the computer couldnt handle it. if you upgrade to a larger throttle body it wont do much good unless you get a different intake as well.