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Rocker design for P51 heads.

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Rocker design for P51 heads. Empty Rocker design for P51 heads.

Post  FORDMUD April 21st 2016, 11:26 am

Which of the stud mount rockers fit the best on P51 heads in a solid roller application about .8 lift? I'm considering the Crower stainless steel. Would the 1.8 be any problem, to get a little more out of an existing cam.
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Post  Lem Evans April 21st 2016, 11:29 am

Randy Moore's 562" engine had 1.8/1 SS Crowers on the intake side.....seemed to work good.

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Post  FORDMUD April 21st 2016, 2:16 pm

Did y'all use the crane on his exhaust for a fitment issue? Was there an issue with the crowers?
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Post  Lem Evans April 21st 2016, 3:31 pm

FORDMUD wrote:Did y'all use the crane on his exhaust for a fitment issue? Was there an issue with the crowers?

Yes, used Crane on the exh. Just wanted more lift on the intake .

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Post  jbozzelle April 22nd 2016, 9:14 am

Comp 1830-16, (Ultra Pro Magnumâ„¢ XD) here on my P-51s now.

I had the older Comp's and the rocker body didn't have enough clearance around the adjusting nut to allow for max lift. Rocker body was also close to the retainer as well.

The blue FRPP's (Crane) I had on there the first time fit with no issues as well.


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Post  Lem Evans April 22nd 2016, 9:24 am

The Comp XD rockers can be had in 1.8/1 ratio too.

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Post  FORDMUD April 22nd 2016, 9:28 am

And they are 200ish cheaper than the Crower. Thanks for the help guys. Should have a new p51 headed 557 in the next few months.
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Post  strokedmyford April 22nd 2016, 10:02 am

comps 1838-16 have a 1.8 and work fine
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