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Old 10-05-2001, 12:40 PM   #1
myred86gt
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Join Date: Sep 2001
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Question piston/valve clrnc on 86 5.0

How large of a valve and how much lift is
safe on a 86 302 with stock flattops w/o
valve notches. I understand thats the way
all 86 blocks came. I can't seam to get an
honest answer from any enginebuilders.
Plan on some Edelbrock performers with a
#18 saleen cam.
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Old 10-07-2001, 05:09 PM   #2
84LX89GT
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The only advice that i can give you is since you're going to work on your engine anyway, just take out the pistons and have them notched for valve clearance, so that way you don't really have to worry about it. I've heard that the clearances on those 86 engines are VERY close, so it would probably be worth the time and effort to notch them. I personally can't tell you how much clearance there is so i guess i'm not much help . Good luck!
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Old 10-09-2001, 02:10 PM   #3
Dark Knight
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Location: Az
Posts: 854
Cool

there's a tool you can buy that will let you notch the pistons wheil they're in the car..
I think summit sells it...

------------------
84 convt,'95 302,AFR's, performer
3.55's, underdrives BBK shorties
stock cam, 1.7's
13.85@102.5
and a '68 stang that WAS nasty ;-)

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