Ford Muscle Cars Tech Forum banner

1 - 2 of 2 Posts

·
Registered
Joined
·
2,251 Posts
Discussion Starter #1
I just got my D0OE 351 heads back from the shop. They cut and installed hardened exhaust seats and cut the intake out for the bigger valves. 1.94 and 1.60

Looking at the new seat you can see where the cutting tool left a ridge. There is a lip around the inside of the seat that should be blended to the bowl. At what angle should I blend the bowl or does it matter? I thought I read somewhere it should be a specific angle. 70 degrees?

Thanks
 

·
Registered
Joined
·
1,073 Posts
NRHA accepted valve job: for stock/super stock heads......

top cut any angle / no longer than .250 of head diameter.

2nd cut stock seat angle / any width

stock only / bottom cut not to exceed 70 deg. angle

top of seat to bottom of bottom cut not to exceed .250



<font size=-1>[ This Message was edited by: SCOTT on 2/3/02 10:08pm ]</font>
 
1 - 2 of 2 Posts
Top