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#1
08-27-2002, 05:31 PM
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Man, my 6X-8's are cracked between two valves. I have a set of 6X-4's that are in good shape. Anyone running them on 455's with any luck? I didn't really want that much compression.
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 http://motorhead.iwarp.com "Not gonna happen, Slim the Slender Gender Bender." The Book of Misus. Chapter 4, verse 18 |
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#2
08-27-2002, 05:31 PM
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Man, my 6X-8's are cracked between two valves. I have a set of 6X-4's that are in good shape. Anyone running them on 455's with any luck? I didn't really want that much compression.
__________________
http://motorhead.iwarp.com "Not gonna happen, Slim the Slender Gender Bender." The Book of Misus. Chapter 4, verse 18 |
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#3
08-27-2002, 09:10 PM
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Have them repaired there`s a shop in Tampa FL. Had mine done there good results ,it`s called Amtex Casting Repair --813-248-9429 .
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#4
08-27-2002, 09:27 PM
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I ran 6X-4's on my last 455 (RAIV cam) and never had a problem. I always used pump gas and when Pontiac Dude tore the motor apart the bearings looked great. No signs of Pre- ignition at all.
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#5
08-27-2002, 10:21 PM
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Hey Dave, What kind of valve train gear did you run with that cam?
__________________
http://motorhead.iwarp.com "Not gonna happen, Slim the Slender Gender Bender." The Book of Misus. Chapter 4, verse 18 |
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#6
08-28-2002, 11:22 AM
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Indy Cylinder Head Inc. in Indianapolis are very good at cast iron repair. Last number I had for them was 317-862-3724.
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'70 TA / 505 cid / same engine but revised ( previous best 10.63 at 127.05 ) Old information here: http://www.hotrod.com/articles/0712p...tiac-trans-am/ Sponsor of the world's fastest Pontiac powered Ford Fairmont (engine) 5.14 at 140 mph (1/8 mile) , true 10.5 tire, stock type suspension https://www.youtube.com/watch?v=qDoJnIP3HgE |
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#7
08-28-2002, 11:37 AM
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I agree with Steve. Indy has one of the best cast iron welders in the country working for them. They would be my first choice.
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#8
08-28-2002, 11:44 AM
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Personally, considering 6X-8 heads are so plentiful, I would find another good head than have it repaired. If it was a low production Ram Air or 455 HO head, then repair it, but a 6X, I would replace it.
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#9
08-28-2002, 06:37 PM
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Yea, the cracked one is in the scrap pile. I'm just going to go with the 6x-4's. I wanted the -8's for the lower compression but now I think I may be better off with the -4's. I'm thinking about a RA IV with 1.5 rockers so I don't get into any weird valvetrain stuff. It's a 455.
Any input? I got both sets for $80 so I don't really feel that bad about it. The -4's have valves that sit high on the seats and they're so clean it's scary. I pulled them off a 2 bbl 350 myself. [ August 28, 2002, 06:39 PM: Message edited by: hoffman7476 ]
__________________
http://motorhead.iwarp.com "Not gonna happen, Slim the Slender Gender Bender." The Book of Misus. Chapter 4, verse 18 |
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#10
08-28-2002, 06:47 PM
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I ran RAIV length valves and Comp springs and 1.65 roller rockers.
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#11
08-28-2002, 06:54 PM
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Are those the 5.O95 inch jobs?
__________________
http://motorhead.iwarp.com "Not gonna happen, Slim the Slender Gender Bender." The Book of Misus. Chapter 4, verse 18 |
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