It's actually 180 degrees of crankshaft rotation between #1 and #4 TDC.

If you have the engine in a stand, orienting the pushrods vertically makes
assembly easier. Otherwise use a flashlight to make sure the pushrods are
seated.

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https://picasaweb.google.com/lh/photo/chWBpTJ3hQ75p7AJfzkdftMTjNZETYmyPJy0liipFm0?feat=directlink
>

Angus

On Wed, Oct 2, 2013 at 12:17 PM, Craig Cowan <phishman068@gmail.com> wrote:

> So I put heads on an engine. The lifters seem firm, pushrods are straight.
>
> Now what?
>
> Set to tdc #1 and adjust valves in just until contacting? Then turn main
> pulley 90* and repeat I cylinder 4?
>
> What's the trick to keepin the pushrods in the center of the lifter while
> getting them onto the rocker assembly?
>
> Thanks!!
> -craig