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6 Bolt AFR heads

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Old 04-02-2007, 03:21 PM   #1
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Default 6 Bolt AFR heads

A couple of guys said they would like to follow along as we add the two additional bolts on my AFR heads for my turbo engine.

The pics show how the heads look today. The welding around the cylinder is so I can move my o-rings as I am also going to run a larger bore than my old 352ci engine. The outer lug will be drilled for a pass thru bolt that will thread into the block side. The upper build up of weld will be drilled and tapped, that bolt will come up thru the deck.
This is a ton of work to do, but I have so much time and money in these heads it is worth it for me. These heads have already had extensive welding to add strength to the deck and allow for larger valvesprings, as well as porting by ET and larger titanium intake valves and inconel ex. I just went this direction to save money!!


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6 Bolt AFR heads-2007_0330billetlsblock0003.jpg   6 Bolt AFR heads-2007_0402afrxtrabolts0003.jpg   6 Bolt AFR heads-2007_0402afrxtrabolts0002.jpg   6 Bolt AFR heads-2007_0402afrxtrabolts0001.jpg  
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Old 04-02-2007, 03:33 PM   #2
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My god!!! What do these things run for???
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Old 04-02-2007, 03:36 PM   #3
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holy **** that looks intensive lol
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Old 04-02-2007, 03:47 PM   #4
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Quote:
Originally Posted by Tiago
holy **** that looks intensive lol
you still wanna do that?
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Old 04-02-2007, 03:52 PM   #5
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Quote:
Originally Posted by SSilverSSurfer
you still wanna do that?

we'll just have to see what the final product is
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Old 04-02-2007, 04:01 PM   #6
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Did you have the water holes welded previously Kurt? My AFR heads dont look like that..
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Old 04-02-2007, 04:15 PM   #7
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'Bout time to drill and mill looks like How common is it to add material to the heads?
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Old 04-02-2007, 04:16 PM   #8
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Quote:
Originally Posted by kp
Did you have the water holes welded previously Kurt? My AFR heads dont look like that..
mine don't either:

Click the image to open in full size.
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Old 04-02-2007, 04:20 PM   #9
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Probably what he meant by: "These heads have already had extensive welding to add strength to the deck and allow for larger valvesprings, "


(guessing though)
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Old 04-02-2007, 04:31 PM   #10
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Quote:
Originally Posted by GrahamHill
Probably what he meant by: "These heads have already had extensive welding to add strength to the deck and allow for larger valvesprings, "


(guessing though)
Missed the 'deck' part of that sentence alltogether lol. Thats what you get for having 3 different forums open
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Old 04-02-2007, 04:32 PM   #11
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Pretty neat shat either way though I LOVE things like this where racers step outside the box and make it happen!
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Old 04-02-2007, 04:38 PM   #12
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I had wondered if that was possible. Looks like I'll buy a pair instead of building them lol. What block is that?
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Old 04-02-2007, 05:11 PM   #13
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Sweet...............
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Old 04-02-2007, 05:14 PM   #14
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Damn... jus Damn.. thats boss right there
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Old 04-02-2007, 05:14 PM   #15
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The deck of the head already had extensive welding to help it hold up to high hp runs.
The additional welding is worth it to me if I can squeeze another 300hp out of it. I will be happy if the gaskets will live 40 runs at 2000hp, at least for this year.
The block is a Dart std deck 4.125 bore billet.


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Old 04-02-2007, 06:34 PM   #16
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very nice /borat


should be happy as a pig in **** at 1500 hp then.
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Old 04-02-2007, 09:10 PM   #17
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Heat treating feasible to improve material strength?
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Old 04-02-2007, 09:40 PM   #18
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Beats the hell of out of my idea! ( Putting some ratcheting tie downs around the motor and cranking them down!)

Nice job Kurt!!!
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Old 04-02-2007, 10:00 PM   #19
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Quote:
Originally Posted by LASTLS1
Beats the hell of out of my idea! ( Putting some ratcheting tie downs around the motor and cranking them down!)

Nice job Kurt!!!


could jus weld the heads to the block and be eone with it...
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Old 04-02-2007, 11:52 PM   #20
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could jus weld the heads to the block and be eone with it...
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