This is topic What size valves should I go with? in forum Tech Talk at Northern California Ford Owners  .


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Posted by Jesse (Member # 312) on :
 
This is for my '65. The motor is a 306 with forged pistons and rods. The compression ratio is around 10:1, but I'm not exactly sure what it is because I put 289 pistons with a 302 crank and rods. (The guy at Summit said it just upped the cr a little.) I have a Comp 280H cam. 230@.512 lift. I will be buying the assembled Edelbrock Performer RPM heads. 2.02/1.60 or 1.90/1.60?

Jesse
 
Posted by st5150 (Member # 51) on :
 
Why are you going with the performers????
 
Posted by cegan (Member # 3185) on :
 
I agree, look @ AFR 165 or 185 and Brodix 5.0 CNC Ported.
 
Posted by Black94 5.0 (Member # 655) on :
 
quote:
Originally posted by st5150:
Why are you going with the performers????
Umm, that wasnt the question.. [Razz]

I'd go with 1.90/1.60's....You might run into valve clearance with 2.02's...I think you'll end up with more horse power with the 1.90's too...
 
Posted by Jesse (Member # 312) on :
 
I am going with the Performers because they have the right price. Show me a set of AFR's completely assembled for $1040 with no tax and I might change my mind.

Rob, I was thinking of going with the smaller valve to be on the safe side as well. You are not the first person to tell me that I will probably make more power (esp. low end tq.) with the smaller valve.

Jesse
 
Posted by BOUNTY HUNTER VERT (Member # 2754) on :
 
Go with the tfs tw heads they have 2.02s and will clear the valve reliefs.
 
Posted by season'd 88 (Member # 169) on :
 
Hey Jesse, your car will run great with the parts you listed. I would choose the smaller(still bigger than factory)1.90 intakes as well. I have seen/felt great results in two entirely different cars running that same cam,btw. Good luck
 
Posted by st5150 (Member # 51) on :
 
Jesse- for that price range, I would suggest you consider Trick Flow Twisted Wedge heads.
 




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