Timing set swap (289 to 5.0)

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pyroman

Founding Member

Jul 28, 2002

480

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18

Ennis, Texas

Dec 11, 2008

#1

• Dec 11, 2008

• #1

I'm putting a roller moter 5.0 in my car to replace the old 289. I'm going to be carbing the 5.0 and thus will be reusing alot of parts from the 289. I'm planning on using a mechanical fuel pump and timing cover off the 289. However I found when fitting the timing chain cover it was interfering with the fuel pump eccentric. I'm using a timing set for 5.0 roller motor. My question is there any difference between the timing sets for an electric fuel pump motor and a mechanical fuel pump motor?

 

coolblue65

Founding Member

Jul 26, 1999

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39

Algonquin, IL

Dec 11, 2008

#2

• Dec 11, 2008

• #2

there are in fact at least 3 different size fuel pump eccentrics, I found out there are 2 sizes that were 1 piece and 1 2-piece:

I believe I ended up going with a 2-piece to fit.

 

D

D.Hearne

New Member

Sep 29, 2000

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south louisiana

Dec 11, 2008

#3

• Dec 11, 2008

• #3

pyroman said:

I'm putting a roller moter 5.0 in my car to replace the old 289. I'm going to be carbing the 5.0 and thus will be reusing alot of parts from the 289. I'm planning on using a mechanical fuel pump and timing cover off the 289. However I found when fitting the timing chain cover it was interfering with the fuel pump eccentric. I'm using a timing set for 5.0 roller motor. My question is there any difference between the timing sets for an electric fuel pump motor and a mechanical fuel pump motor?

Click to expand...

No difference in the timing sets, you just need the thinner eccentric. As coolblue stated there are at least three eccentrics out there. The solid one piece came in two thicknesses, the stamped steel 2 pc was the same thickness as the thinner of the two 1 pc. eccentrics.

 

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pyroman

Founding Member

Jul 28, 2002

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Ennis, Texas

Dec 11, 2008

#4

• Dec 11, 2008

• #4

Hmm that could be the problem. Right now I have the old one piece on there from the 289. I also have the two piece and haven't tried it. Is it just the inner and the outer race or is there any other components that go along together?

 

D

D.Hearne

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Sep 29, 2000

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south louisiana

Dec 11, 2008

#5

• Dec 11, 2008

• #5

2pc is 2 pieces. just the stamped inner with the bent ear to engage the cam drive hole & the outer race the pump arm rides on.

 

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pyroman

Founding Member

Jul 28, 2002

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Ennis, Texas

Dec 11, 2008

#6

• Dec 11, 2008

• #6

Haha, so it would imply. Thanks.

 

65ShelbyClone

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Sep 9, 2000

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Antelope Valley, SoCal

Dec 11, 2008

#7

• Dec 11, 2008

• #7

You will also have to get a shorter cam gear dowel if you use the 2pc eccentric.

 

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pyroman

Founding Member

Jul 28, 2002

480

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Ennis, Texas

Dec 12, 2008

#8

• Dec 12, 2008

• #8

I have two sizes, one that came with the motor and a longer one I ordered to run the one piece. I think the stock dowel pin on the 5.0 is correct?

 

65ShelbyClone

Founding Member

Sep 9, 2000

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Antelope Valley, SoCal

Dec 12, 2008

#9

• Dec 12, 2008

• #9

Yeah, you're all set. Use the 5.0 dowel.

 

coupe5.0

Founding Member

Oct 31, 2000

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Dec 12, 2008

#10

• Dec 12, 2008

• #10

Mine rubbed after i used a 5.0 timing set on my 68. Did a little fancy clearancing with a grinder (maybe 1/8"). It barely touched though. No problems since.

 

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pyroman

Founding Member

Jul 28, 2002

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18

Ennis, Texas

Dec 12, 2008

#11

• Dec 12, 2008

• #11

Cool well I put the 2 piece on today and put the short dowel pin in and clearance is good. Timing cover is on, now more assembly!