|
jmhardin Nov 5th, 02, 12:37 PM I have stock 462 heads. What is the size of the valve seal I need? Choices are 5/16 x .531 11/32 x .500 11/32 x .531 3/8 x .531 Which ones do I get? Wally Nov 5th, 02, 1:02 PM If the guides are machined for seals, and it has 11/32 valves then you choices narrow to the two 11/32 selection. If the heads are not machined you need a different type of seal. Go to your local machine shop and purchase the seals you need. They will have them in stock, or they should. ------------------ www.muncie4speed.com (http://www.muncie4speed.com) Gold 67 1967 Malibu, 2nd owner. 1971 Malibu, new rat motor going in. There is nothing like rowing through the gears at 7500. Stick cars are so much fun they should be a controlled substance! [This message has been edited by Wally (edited 11-05-2002).] engineguy Nov 5th, 02, 2:36 PM jm, Wally is correct. The seals you have listed in your post are what we call "positive" seals, which means that the outside diameter of the valve guide is machined to either .500" or .531". The body of the seal then is pushed down on this machined area to form a positive seal. The 11/32" is the diameter of the seal where it fits over the valve STEM. If your heads are not machined for the positive seals, they would have to be removed from the car, valves removed and machined. Your other option, if the guides are not machined, is to use the stock type "umbrella" seals which install onto the valve stems without any machining. ------------------ Bill 64 Chevelle Malibu Sport Coupe (original owner) car now has 427" BB, Chrysler HEMI 4-spd. trans., 12 bolt 5.57 w/spool & axles. "HOT RODDER is NOT a dirty word" "Too much horsepower is just enough" [This message has been edited by engineguy (edited 11-05-2002).] jmhardin Nov 5th, 02, 2:46 PM Thanks, glad I asked. Comp Products does not tell you that. Says installs with fingers. This site sure saves my A$$ some doe. BillK Nov 5th, 02, 7:39 PM Engineguy Bill... Are you going to the PRI show by any chance ??? ------------------ Bill Koustenis Advanced Automotive Machine Waldorf Md 1971 Heavy Chevy - original owner Team Chevelle #100 engineguy Nov 6th, 02, 8:25 AM Bill, yes I will be at the show on Thursday and Friday for sure, undecided about Saturday. We will have a booth there, but I don't spend much time around the booth. Am assuming that you are going? If so, leave me a message at our booth as to where we can hook up, would like to meet you. ------------------ Bill 64 Chevelle Malibu Sport Coupe (original owner) car now has 427" BB, Chrysler HEMI 4-spd. trans., 12 bolt 5.57 w/spool & axles. "HOT RODDER is NOT a dirty word" "Too much horsepower is just enough" | ||