Lykins Motorsports 347SBF Build...

[blykins]

This one is not. It's not a high rpm engine, nor will it be a high hp engine, relatively speaking.

On a $250 crankshaft, having to add $100-200 worth of metal just isn't cost effective.

Spent another 30 minutes on the rocker arm geometry, just wasn't happy with it.

Went through a couple more iterations with the pushrod length checker and got it to where I didn't lose any valve lift.

FWIW, a 6.225" pushrod lost .005" worth of lift at the retainer. A 6.300" pushrod didn't lose any, and the pattern was good, just a little past center on the valve tip.

Good retainer to rocker arm clearance. Check.

Good pushrod to rocker arm clearance. Check.

[601HP]

Originally Posted by blykins

This one is not. It's not a high rpm engine, nor will it be a high hp engine, relatively speaking.

On a $250 crankshaft, having to add $100-200 worth of metal just isn't cost effective.

Spent another 30 minutes on the rocker arm geometry, just wasn't happy with it.

Went through a couple more iterations with the pushrod length checker and got it to where I didn't lose any valve lift.

FWIW, a 6.225" pushrod lost .005" worth of lift at the retainer. A 6.300" pushrod didn't lose any, and the pattern was good, just a little past center on the valve tip.

Good retainer to rocker arm clearance. Check.

Good pushrod to rocker arm clearance. Check.

Your attention to the smallest details and values is satisfyingly noted!

David