What exactly is a 3 or 5 angle valve job when building the head? What are its benefits and is it necessary?

 

its how many angles they port the valve openings. So in a 3 angle, they port it from 3 different angles, and a 5 angle, well, they port it from 5 angles. It is done to increase the flow of air into the cylinder and also make the air flow more smoothly. You can do a valve job and still stay with a stock sized valve, or you can go to a 1mm oversize valve, which again allows more airflow. On a stock size valve you can make up to 500whp easy.

 

bump cuz im interested to know too.

 

I already have the 1mm oversized racing valves... will 5 angle be better than 3?

 

yes

 

How much for the oversize valves and valve job?

 

you asking me?

 

I was just curious.

 

around 1200 including porting the intake- exhaust, cams, cam gears, 1mm oversized racing valves and 3 angle valve job

 

$1200 for all that? pretty cheap.

 

yea... labor is cheaper in Taiwan

 

sweet!

 

do you think I should port the intake manifold as well? Its costing me 80 bucks, what hp numbers can I get with it? I might as well do it to match the ported intake and exhaust head

 

80 bucks? Hell ya you should do it!

 

You can think of multi angle valve jobs like routering a countertop. The more angles the smoother the radius on each side of where the valve and seat actually touch.