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Old Feb 19, 2006 | 02:22 PM
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84-250
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timing chain questions

i have an 84 351w, truck built in 11/83, original engine. i noticed in summit that 1984 is the split between two different timing chains, based on either a one-piece fuel pump eccentric or a two-piece fuel pump eccentric.
i really would like to buy the timing chain before i rip the engine apart.

which eccentric would i have?
i would also like to get a timing chain that has the 3 different keyways, what pre-71's 351w car should i go for (ill probably going to napa for parts instead of summit).
 
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Old Feb 20, 2006 | 05:58 PM
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i looked in my 78 ford manual and it shows and picture of the 351w engine having a 2 piece eccentric for that year.

anyone know if they changed to a one piece eccentric or was it still a two piece?
 
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Old Feb 23, 2006 | 07:34 PM
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i've been researching this topic and hit a snag.
On the comp cams website, they say that the 72 and earlier 351w had a one-piece eccentric while the 73 and later had a two-piece eccentric.
On edelbrocks website,(they use cloyes timing chain) say that 62-3/21/84 had a one piece eccentric.
While my 78 repair book from ford shows a two-piece eccentric

anyone know the real answer?
 

Last edited by 84-250; Feb 23, 2006 at 07:53 PM.
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Old Mar 3, 2006 | 12:34 PM
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incase anyone wants to know, it has a two-piece fuel pump eccentric
 
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Old Mar 3, 2006 | 03:45 PM
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Thanks for following up, apparently nobody really knew (sticky question).

It was probably one of those questions that couldn't be answered without observation for confirmation...
 
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