new rebuild
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Junior User
Joined: Mar 2001
Posts: 50
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new rebuild
I'm having my 88 351 rebuilt for general use to get me around hunting and fishing and to plow my drive.I'm trying to find out what size my injectors are so I can replace them.I've been reading how they have a color code.Mine are yellow,there are no numbers for reference or size.What can I use and do I gain from going up in size or am I just paying for fuel?Thanks Ron
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Joined: Jun 2001
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new rebuild
If your 5.8 is original to 88 and the color is yellowish/orange you have 19lbs (I believe that the only stock size available for that year). As far as installing larger injectors sometimes you have to adjust fuel pressure and chip to make it work as you would like and the computer may or may not understand what is going on. I know if your truck is speed density it does not like changes if it is MAF then I would not think the next size up would hurt. If you plan on doing nothing else to the motor I would install new 19lbs and that should improve things slightly and keep the truck dependable. Good luck
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Junior User
Joined: Mar 2001
Posts: 50
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new rebuild
Thanks for the reply JW.I got some good 19# injectors and can't seem to find any pintle caps after I took them off to clean things up.O-rings aren't a problem but the caps are.Can I run with just the spacer and the o-ring?Ron
