no balls
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I think she might not be running right. My previous truck, 1996 F150, had a 4.9L 5-sp and 2.73 axle code. It could be rolling,say.... maybe 10 mph on dry pavement and when I floored it would scratch the tires for a few seconds, till it revved 1st on out, and it came with 31x10.50 Michelins. Mine didn't seem to be slow till midrange area, maybe 50-75 or so. Both ends of the sped spectrum it seems to run good, top and bottom end speed.
BTW, the fuel pump is in the tank on these models, 1989 down have the inline fuel pump (I think, my 1986 FI 302 had inline fuel pump)
Check the fuel pressure, those trucks have to run higher pressure because the fuel injectors are only 12/lb per hr instead of the 19/lb per hr the v8's have (for vapor lock purposes from what I have read, not sure though)
BTW, the fuel pump is in the tank on these models, 1989 down have the inline fuel pump (I think, my 1986 FI 302 had inline fuel pump)
Check the fuel pressure, those trucks have to run higher pressure because the fuel injectors are only 12/lb per hr instead of the 19/lb per hr the v8's have (for vapor lock purposes from what I have read, not sure though)
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From: Maryland
2.73 gears are fairly high with bigger tires, could be a portion of the 'sluggishness'... otherwise, do what ymeski56 recommended, he's got stock in Seafoam, I'm pretty sure, but it does work well.
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From: Long Beach Calimexifornia
[/QUOTE]Check the fuel pressure, those trucks have to run higher pressure because the fuel injectors are only 12/lb per hr instead of the 19/lb per hr the v8's have (for vapor lock purposes from what I have read, not sure though)[/QUOTE]
Having a hard time swallowing 12 for injectors in I-6's I could see 17's cause the pump pressure is higher, but 12's? Anybody else want to corroborate that? I'll give you 19 stock in 8 cyls., that's what I have in mine!
Having a hard time swallowing 12 for injectors in I-6's I could see 17's cause the pump pressure is higher, but 12's? Anybody else want to corroborate that? I'll give you 19 stock in 8 cyls., that's what I have in mine!
Last edited by ymeski56; Feb 5, 2010 at 08:55 PM.
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Nope, he's right.........Last paragraph before the picture.....http://www.bigblocksix.com/Eddie/injectorswap/