Speedway's-SS valves

39 STD

39 STD

Senior Member
They have the valves & hardened seats. At 30° intake, 45° exhaust. I know stock in/ext valves are 45°. I understand there is some benefit going with a 30° intake valve. If true, has or does anyone use these Speedway valves?
 
I think you'll find those 30* int valve are 1.600 head dia. They work good for a high RPM engine but alot of unneeded grinding seats for a stock engine. Walt
 
If you decide that you want those seats, contact me and I will sell you a set I got that I do not now plan on using. I think I also have the matching valves. I bought them but my machinist did not want to do that work on my block.
 
No real noticeable hp increase on a street motor with 30 deg valve angle just a good amount of extra work.Not to say expense if you pay to have it done.Put your money into a bullet proof hei ignition conversion that is tunable and easy to get.Talk to Bubba.

R
 
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