Holroyd BBC Rocker Arms

[X-TECH MAN]

If NHRA hadnt allowed the crazy valve spring pressures years ago stockers woulnt have to use this crap. its just costing you more money.

[james schaechter]

[QUOTE=Mark Yacavone;253760]

Originally Posted by james schaechter

Mark, there were some guys welding up the pushrod sides of their rockers and no one in tech had issues with that. The rocker had to stand a lot of heat in that process. The problem seemed to be that if the rocker got too brittle, it would break anyway.

Jim, I was just wondering when it became legal to weld or customize stock rockers??
When we went to Indy in '04 with the 350 Buick, I had already split a couple of rockers at the shaft hole. I wonder how long we would have lasted in teardown if I had welded a bridge piece across the top of my rockers to strengthen them up?

Let's do a poll:

5 seconds

10 seconds

15 seconds

Mark, who knows? All I know is that there are many things out there that are in now and no one knows why.....

[Dan Lattimore]

Originally Posted by X-TECH MAN

If NHRA hadnt allowed the crazy valve spring pressures years ago stockers woulnt have to use this crap. its just costing you more money.

Terry, No one knows that more than me and I hate that it has come to this. All my stump pullers still use 130 seat and 330 open, the extra rpm these spring pressures allow are no advantage to me. On the other hand if I don't play by the new rediculous rules the L88 would be left way behind.--------Danny

[Jeff Lee]

Those $279 Crane Gold rockers for Stock don't sound so bad against a $900 set of stamped rockers now do they?

[mannymen]

racear I said dark chocolate not laxative chocolate

[Bob Shaw]

The rule book says rocker arms can not be modified. I asked Wesley if I could modify mine so they wouldn't split and he said "no".

[X-TECH MAN]

Originally Posted by Bob Shaw

The rule book says rocker arms can not be modified. I asked Wesley if I could modify mine so they wouldn't split and he said "no".

Hummmmmm, Interesting.

[X-TECH MAN]

Originally Posted by Grant Eldridge

The rockers Clark uses are Marine, identified by a particular marking inside the rocker. He has machined a re-inforcement that fits above the pushrod seat and is welded into place. The design is a nice fit, with an oiling hole that aligns with the hole in the rocker. I doubt you could do these yourself for the money, unless you could design them and had a cnc machine capable of making the inserts and did not count your time. I just got mine back from being upgraded, Clark is great to do business with and IMO his stuff is top notch. The Stud and adjusters he makes to use with these rockers are beautiful, sure they cost $$ but for a limited specialty product worth it....they are also legal as purchased from Clark.....
my 2 cents...
Grant Eldridge

It sounds like the difference between the west coast rule book and the east coast rule book. Is it legal to do this or not ? Travis????????

[Bub Whitaker]

Originally Posted by X-TECH MAN

It sounds like the difference between the west coast rule book and the east coast rule book. Is it legal to do this or not ? Travis????????

Yes TECH MAN... this is a load of crap... no aftermarket rocker arms...what does that mean?

[Charley Downing]

Bub,Terry just has to bit#h about something NHRA did. He has nothing better to do with his time.