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Classic Mustangs Tech Forum

Technical discussions specific to 1964-1967, 1968-1970, and 1971-1973 Classic Mustang. Discuss all tech related to in-line six cylinder and V8 powered Vintage Mustangs here.

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Unread 10-15-2009   #1 (permalink)
Pig Muffin is offline GT Member

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Default 68 302 Fuel Pump Eccentric Reinstall - double roller and dow isnt long enough

What have u all done when using a double roller and new cam shaft from comp? I got two dow pins but when i seat the longer one in the cam and then install the Cloyes double rolller I dont have enough left for the fuel pump eccentric?

I need some ideas that do not include going with a later modle cover and electric fuel pump.

Thanks!
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1968, 302 .030 / Comp Cams Magnum 270h #31-414-3 501 lift @ .050 dur 224/224
Comp Cams Magnum Lifters and Pushrods Comp Cams 1.6 Full Roller Rockers
Edelbrock RPM heads (2.02 / 1.60) / RPM Air Gap
Holley Street Avenger 670 carb
Edelbrock 110gph Fuel Pump
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Unread 10-15-2009   #2 (permalink)
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you need the two piece eccentric with tab in back.
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Unread 10-15-2009   #3 (permalink)
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BOoooYAH! Thanks a bunch. Were can I get that? Autochevy?
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1968, 302 .030 / Comp Cams Magnum 270h #31-414-3 501 lift @ .050 dur 224/224
Comp Cams Magnum Lifters and Pushrods Comp Cams 1.6 Full Roller Rockers
Edelbrock RPM heads (2.02 / 1.60) / RPM Air Gap
Holley Street Avenger 670 carb
Edelbrock 110gph Fuel Pump
Cloyes Street True Roller Timing Chain / Professional Products Harmonic Balancer
MSD Pro billet Dizzy, 6AL Box, Blaster 2 Coil
Flowtech Long Tube Headers
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Unread 10-15-2009   #4 (permalink)
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try local machine shop/engine builder.
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Unread 10-15-2009   #5 (permalink)
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You can probably get them from Jegs, Summit, etc. The eccentric has 2 dishes to it and a 'tab' that sticks through the hole where the dowel is sunken. The long dowel normally sticks through the dbl row gear and out to protrude enough to slip the thick FPP eccentric on. I had the small pin pulled out because I didn't like how thin the cheap 1pc. eccentric the machine shop gave me was and the 2pc. were just as thin. The FPP one is thick and won't wear through, it has a hole that the dowel goes through vs. the tab.
I can post pics later when I'm home if it helps.

Make sure you have the right sprocket with the right eccentric, the sprocket for the 2pc. is thicker at the center (IIRC) and if used with the wrong eccentric will rub against your TC cover causing metal filings and eventually a hole. The 1pc. sproket is not as thick at the center hole (easier seen if you put them next to each other at a parts store counter. Being a double roller doesn't make the center mount any thicker.
Jon

Edit: just checked summit and there are also 2 different sized bolt holes in the center of the eccentric for the cam hole also- 3/8" bolt or 7/16" bolt for the one piece
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Unread 10-15-2009   #6 (permalink)
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Good info there. Also make sure if you use a two piece eccentric that it spins freely otherwise the cam bolt walks out. I've been there and it isn't good.
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Unread 10-15-2009   #7 (permalink)
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thanks guys can you give me a link to the right one that will fit? i looked at summit and got zero results. please help me out. i have hear the two piece needs to be tight and not free spinning and heard it needs to be greased so it does move. need some solid advise here. thanls again for all your help
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1968, 302 .030 / Comp Cams Magnum 270h #31-414-3 501 lift @ .050 dur 224/224
Comp Cams Magnum Lifters and Pushrods Comp Cams 1.6 Full Roller Rockers
Edelbrock RPM heads (2.02 / 1.60) / RPM Air Gap
Holley Street Avenger 670 carb
Edelbrock 110gph Fuel Pump
Cloyes Street True Roller Timing Chain / Professional Products Harmonic Balancer
MSD Pro billet Dizzy, 6AL Box, Blaster 2 Coil
Flowtech Long Tube Headers
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Unread 10-15-2009   #8 (permalink)
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Quote:
Originally Posted by Jonk67 View Post
You can probably get them from Jegs, Summit, etc. The eccentric has 2 dishes to it and a 'tab' that sticks through the hole where the dowel is sunken. The long dowel normally sticks through the dbl row gear and out to protrude enough to slip the thick FPP eccentric on. I had the small pin pulled out because I didn't like how thin the cheap 1pc. eccentric the machine shop gave me was and the 2pc. were just as thin. The FPP one is thick and won't wear through, it has a hole that the dowel goes through vs. the tab.
I can post pics later when I'm home if it helps.

Make sure you have the right sprocket with the right eccentric, the sprocket for the 2pc. is thicker at the center (IIRC) and if used with the wrong eccentric will rub against your TC cover causing metal filings and eventually a hole. The 1pc. sproket is not as thick at the center hole (easier seen if you put them next to each other at a parts store counter. Being a double roller doesn't make the center mount any thicker.
Jon

Edit: just checked summit and there are also 2 different sized bolt holes in the center of the eccentric for the cam hole also- 3/8" bolt or 7/16" bolt for the one piece
will need a 3/8, i already bought the ARP cam bolt and washer.
__________________
1968, 302 .030 / Comp Cams Magnum 270h #31-414-3 501 lift @ .050 dur 224/224
Comp Cams Magnum Lifters and Pushrods Comp Cams 1.6 Full Roller Rockers
Edelbrock RPM heads (2.02 / 1.60) / RPM Air Gap
Holley Street Avenger 670 carb
Edelbrock 110gph Fuel Pump
Cloyes Street True Roller Timing Chain / Professional Products Harmonic Balancer
MSD Pro billet Dizzy, 6AL Box, Blaster 2 Coil
Flowtech Long Tube Headers
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