Aftermarket Iron Rocker arms !

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SS Lancer

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Whats max lift some people have used on aftermarket rockers
Isky-Crane-Mopar W2 etc ?
Thanks
 
I've seen someone first hand run over .600 lift on stone stock 273 rockers. Stock adjusters, non bushed, not modified in any way. It was on a stock stroke 340. They ran fine.
 
650 Mechanical Roller ?
Harland Sharp stands and shafts came in today and was just messing around and threw some nos Econo W2 (.775 ) offset on and was really surprised at how good they fit etc
Pushrod angle looks ok and was really surprised how well rockers cleared 1.550 springs .

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Bushed ductile iron W2 rockers. .754 gross lift (.734 net) and 8500 RPM. Never had a rocker fail. Broke a bunch of junk *** Crane lifters that killed the rockers, but the rockers never failed.
 
Bushed ductile iron W2 rockers. .754 gross lift (.734 net) and 8500 RPM. Never had a rocker fail. Broke a bunch of junk *** Crane lifters that killed the rockers, but the rockers never failed.
WOW - That said it all !!!
I wonder if I wanted to use these should I just send them off and be bushed ?
 
WOW - That said it all !!!
I wonder if I wanted to use these should I just send them off and be bushed ?


Yes. Send them in to get bushed and have the ratio corrected. You can even get them converted to a 1.6 ratio. I used what used to be called Rocker Arm Specialists, but that name changed and I can never remember what the new name is.
 
Yes. Send them in to get bushed and have the ratio corrected. You can even get them converted to a 1.6 ratio. I used what used to be called Rocker Arm Specialists, but that name changed and I can never remember what the new name is.

Thank you - Rocket gave me a company's name a while back its probably who u mentioned .
 
That is the company. Redding CA. They will do a nice job on your rocker arms.
 
Yep. Just had a set done up by Gary. Very nice man. They came out great. Only thing I didn’t do was have the ratios all corrected. We talked about what I was doing, they’d be fine for street/mild strip. It’s not a max effort race engine so he agreed the added expense wasn’t worth it.
 
Yep. Just had a set done up by Gary. Very nice man. They came out great. Only thing I didn’t do was have the ratios all corrected. We talked about what I was doing, they’d be fine for street/mild strip. It’s not a max effort race engine so he agreed the added expense wasn’t worth it.

Yup he's as honest as they come. He won't recommend ratio correction unless he thinks you can benefit. He'll do it anyway of you just want it, but he'll tell you real quick it's splittin hairs on a street motor. ...and he's right. But I'd do it anyway. LOL
 
Those shafts are pretty thick and I'd bet with properly dimensioned blocks, there is no flex or movement. That gap will be supported.

I don't disagree, but WHAT'S the purpose? That's what I was wonderin.
 
The offset of the HS W2/W5 blocks and shafts is 0.18”. Little material would be left on the one side of the shaft with that offset so I guess they just mill it.
 
I don't disagree, but WHAT'S the purpose? That's what I was wonderin.
My understanding is that the blocks on race heads are offset to center the wipe from the rockers. Much like the shim kit that B3 makes, the blocks are adjusted to position the shaft on the Race W2. Econo heads would need the shims in the saddles and the holes still have to be bored off center in the shaft to accommodate the bolts.
 
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