what degree is a 240-300 head

[john-dickjr]

what degree is a 240-300 head..like a small block chevy is 23 degree valve angle...small block ford is 20 degree ..so whats a 240-300

 

[StrangeRanger]

If no one has an answer, it's easy enough to measure yourself. All it takes is a head, a valve, a spirit level and a machinist's protractor,

Slide one valve into one of the valve guides and use a piece of tape or something across the face to hold it closed
Set the head up on a table and level it with the spirit level and some shims
Put one leg of your machinist's protractor on the valve stem and set the other to dead vertical with the spirit level
Read the angle off the scale

 

[Anonymous]

just need the protractor . the deck is 180* plane , with a valve unsprung in head just push valve above deck , adjust protractor to valve head . thats the angle

 

[fastbarry]

the valve angle is 12* on a 300.

 

[john-dickjr]

bringing this back to life..what kind of issue would i have using a 351w piston(1.77 ch) with a small dome