Need help identifying these ductile rocker arms

[Banzaiii67]

Found these locally forsale for a decent price. They don't appear to Crane or Isky.

Are they Erson or Mopar Performance??

 

[Cranky]

Cranes? Isky has a similar set but their name is on (iirc) them plus they have contact pads for the valve tip.

 

[62MAX]

Like these.

 

[Banzaiii67]

I asked the seller if they had crane/isky engraved on other side, he said no..



Cranes were usually engraved on the bottom see picture above, Isky were on the arm.

 

[lewtot184]

those are the old factory 1.5's.

 

[Banzaiii67]

those are the old factory 1.5's.

Worth $200?

 

[lewtot184]

Worth $200?

depends on how good the fulcrum area is. all those ductile iron rockers have fulcrum issues. also depends on how much lift the cam has. iron rockers have geometry issues at higher lifts.

 

[62MAX]

depends on how good the fulcrum area is. all those ductile iron rockers have fulcrum issues. also depends on how much lift the cam has. iron rockers have geometry issues at higher lifts.

And they are not a true 1.5 ratio.

 

[lewtot184]

And they are not a true 1.5 ratio.

pretty sure they are a true 1.5. i haven't had any of those rockers in decades, but i've never found the mopar rocker ratio "myth" to be true; at least the ones i've checked. i know crane's 1.5"s are a true 1.6 and there 1.6's are a true 1.65. seen the same thing with harland sharps. i think the rocker ratio myth started with hugh's and everybody keeps repeating it. the only way i can figure hugh's came up with 1.38 is by checking with a hydraulic tappet with running springs installed on the heads. hydraulic tappets will collapse after a few cycles with checking springs. he's probably sold a lot of rockers over this.

 

[62 Dart Convertible]

Look like stock rockers with aftermarket adjusters...

 

[Meep-Meep]

Those are factory Max Wedge type and/or any early engine with solid lifters. Good rockers for a mild performance cam. The price is OK if the bores aren't gouged up, which will be a rare find. I'd offer $150.00

 

[Banzaiii67]

I ended up passing on them, seller wouldn't budge on price even though he didn't know what he had. Thanks for all the responses!

 

[Cranky]

Found a brand new in the box Isky's for 100 bucks at a swap meet several years back.....grabbed them quick too! Probably sell for 200 in today's dollars.

 

[66Satellite47]

depends on how good the fulcrum area is. all those ductile iron rockers have fulcrum issues. also depends on how much lift the cam has. iron rockers have geometry issues at higher lifts.

I ran the Isky's for years with .585 lift & held up well. We cut the diagonal grooves in the shafts. The tip contact pattern wasn't the greatest though.

 

[65Fury440]

I ran the Isky's for years with .585 lift & held up well. We cut the diagonal grooves in the shafts. The tip contact pattern wasn't the greatest though.

I would like to see how the grooves were cut. I am working on my ductile rockers now and would like to put grooves in my shafts.