Another 416 Stroker Build-Pic Heavy

RAMM said
Some progress and an attempt to get this thread back on track.

I wanted to get the pushrods ordered so I mounted a cylinder head with the PRW rockers on and checked max lift while I was there. I always find this interesting.

With .020" lash I/E the pushrod length works out to a really nice and nominal number of 7.500". This makes life easy.

Calculated and observed max lifts:

Intake lobe lift = .416" x 1.5 =. 624" - .020" lash = .588" actual lift for a net loss of .036" lift
Exh lobe lift = .399" x 1.5"=.5985"-.020" lash = .552" actual lift for a net loss of .046" lift

Food for thought. J.Rob

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Everyone i know who builds sbm knows this.
I was just saying this in another thread, and about 15 yrs ago in my own 410 thread on this site that anyone can look and read.
I had .533 out a .573 solid after the lash,push rod angle ,and rocker geometry ate it up.
That's .040 robbed.
Thats how the geometry on a sbm becomes so important...though youll always lose some with the 59*lifter abgle.angle
Always figure in the loss when choosing the cam in conjunction with the heads flow characteristics.
It does need echoed though.