i just noticed my timing chain is not a true roller.

i want true roller timing gear sets for 351w (1979 fwir).

there are discrepancies in compatible dates.

i would guess my 351W flat tappet would use same chain set as 289.

i would guess chain sets are different: flat tappet vs. roller lifter.

any body know differences or dimensions of sbf timing chains?

what brand sbf double roller chain hold up well?

 

Go with a Cloyes or Rollmaster. I've used Cloyes forever on my BB chevys and never had an issue, I'm now using Rollmaster. Pretty much the mainstay of the industry, can't go wrong with either.

 

thanks.

i will look at Cloyes & Rollmaster.

mine is stamped(11-98 111X; FE3-1, E3AE-A3A; 321).
looks pretty good after 7000 miles but has 0.4" stretch if i push if firmly.
ford spec is 0.5" but i don't know how firmly to push. (After review of ford manual and my tom monroe book my actual slack is 0.4"/2 = 0.2")

mine has 2 piece fuel pump eccentric.

some have note about thrust plate modification req'd.

 

Now this is interesting.

my numbers match cloyes numbers on the true roller set.

i could swear my chain is not true roller...hmmmm.

 

Do you have pics of yours?

 

Looks like I have:
Cloyes Heavy-Duty Timing Sets CLO-C3057K w/ 0.2" non true roller double chain.

Looks like I want:
Cloyes Gear 9-1138 - Cloyes Street True Roller Timing Sets w/ 0.25" true rollers.

My casting numbers match but i will need new gear machined for larger 0.25" rollers.

http://www.summitracing.com/parts/CLO-9-1138/

 

same same but different

will be interesting to see how much deflection a new chain has.

 

ford spec is .5" deflection maximum from straight line off sprockets; this is half of total deflection.
my total deflection is .4 inches.
since my half deflection is only .2 inches i may just run w/ my current chain.

 

placing an order soon and am really wanting that true roller timing chain set.

i prefer 1 piece eccentric fuel pump cam.

i have a 1.12" and a 1.38" cam drive pin.

for the 1.38" pin to work the 1 pc eccentric cam sprocket must be about 1/4" thinner than the 2 pc eccentric cam sprocket.

does anyone know the thickness of sbf 1 piece eccentric cam sprocket?

not getting anywhere fast. i think the long 1.375" pin fits pre 73 1 piece eccentrics w/ a thin OEM cam gear w/ single chain.

i think double roller cam gears may be thicker and require a rare <5/16" dowel pin?

not sure who sells the <5/16" cam dowel pins?

can't be this hard.