Not Ranked
Torque To Yield....
It could be that there isn't any "torque" specification for that rod setup. The
fasteners could be "torque to yield" style where you use a con rod bolt stretch
gauge instead of a torque wrench. In any event, you probably shouldn't reuse
the fasteners, get some new ones from ARP and they can supply the TTY specs
for them. But to start out, you might want to make sure you can actually use
those rods in your engine. Since you are building a stroker FE, are you using
a custom crank? Most, if not all of the aftermarket stroker cranks have 2.2"
journals for BBC rods. BBC rods are used in practically all stroker FE's because
they are available in a 6.7" length (compared to 6.488" for an FE rod) and this
improves the R/S ratio and pistons are readily available for BBC rod setup. 3.98"
cranks are readily available with FE rod journal size, but beyond that, 2.2" journals are pretty much the rule. You would need a custom crank (not cheap)
or perhaps you could have a 2.2" crank welded up to 2.438" FE journal size.
(probably more trouble than its worth to use those old rods) Then you'll need
pistons for that setup and they won't be off the shelf.
You would probably be better off to use those old NASCAR rods as paperweights and build your stroker FE around proven ingredients that
have good longevity in the street environment. A lot of "race" stuff is
not appropriate for a street engine because racing equipment is designed
to last the length of a single race and is discarded afterwards, consequently
fatigue resistance is usually not an important design criteria. Since rod
failure often causes the block to be ruined, it probably doesn't make sense
to risk a valuble FE block to an unknown quantity.
....Fred
|