Good morning all,
I'm having a hell of a time getting the right valves for my pro comp bare heads. I placed an order at summit for both Edelbrock intake and exhaust valves back in June. They shipped the exhaust ( part #9318 ) almost immediately. The intake valves ( part # 9375) have been on back order and I'm now being told mid March. So I told them to cancel them. I decided to go with Milidon intake valves ( part # 45690) which I have received. The problem is the Milidon intake valves are 4.713 in length and the Edelbrock intake valves that I cancelled are 4.756. after putting them in the head I realized the intake valves are much shorter ( didn't even think about the length when I ordered so my bad). After looking for hours online I'm finding lengths all over the place? Has anyone built these heads from bare and could you please provide me with which valves you used and possibly the part #?. Also my installed height needs to be 1.8 if that helps.

 

Order the +.100’s from SI. They work the best.
Make sure you check the chamber size too. They’re not 77cc as advertised. And I offer a full service for these as well, including a CNC program.

 

Sorry Mark but what is SI? Do you happen to have a part #. Is the +.100 because of the install height?

 

SI is the manufacturer in CA. I don’t have the part number handy, but I may have a set here. I’ll check on both and let you know.

 

Do you happen to know the overall length for the intake and exhaust valve that you are recommending?

 

Approx 4.800”.