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#1
04-29-2008, 04:29 PM
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Just a blind squirrel looking for a nut. |
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#2
04-30-2008, 01:02 AM
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 I knew as soon as I left for work that I forgot to divide by 2. That's what I get for being in a hurry.  Anyway, Cylinders 1-.149 + .102 = .251" 3-.154 + .102 = .256" 5-.137 + .102 = .239" 7-.087 + .102 = .189" I thought you were to get .250" (or whatever it was) at the cast bore size. If you wanted a 4.375" bore, they cast the block at that bore size with the .250" wall? So if I had an IA II block with a 4.170" bore I can bore it to 4.375" and still have .250" or more?  The Brinell stuff, I'm not touching. I'm not convinced it would be a problem. 
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! W.E.C moment "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#3
04-30-2008, 02:20 AM
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[QUOTE=johnta1]
I knew as soon as I left for work that I forgot to divide by 2. That's what I get for being in a hurry. Anyway, Cylinders 1-.149 + .102 = .251" 3-.154 + .102 = .256" 5-.137 + .102 = .239" 7-.087 + .102 = .189" I thought you were to get .250" (or whatever it was) at the cast bore size. If you wanted a 4.375" bore, they cast the block at that bore size with the .250" wall? So if I had an IA II block with a 4.170" bore I can bore it to 4.375" and still have .250" or more? The Brinell stuff, I'm not touching. I'm not convinced it would be a problem. they advertised .250 or more at 4.375 not as cast bore size
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D.S.R.E. Your NW Pontiac Street/Strip Engine Builder, Specializing in Cylinder Head,Intake Manifold,and Exhaust Manifold Porting services and Building the Most Efficient stock rebuilds to Hi HP Pump Gas and Race Combinations for Pontiac,Buicks,Olds,FE Fords,385 Series and HP Gen 3 and 4 LS engines! 2006 silvy Z71 4X4,383 LS 600+hp NA Shared Toy-66 Lemans 470cid by me 537hp 580tq-manifolds, 570hp 590tq-2"headers,custom cam,rpm intake, mild e-heads, Looks stock ;-} |
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#4
04-30-2008, 07:43 AM
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Quote:
http://forums.maxperformanceinc.com/...d.php?t=451173 As a point of reference, my IA-2 was ordered with a 4.180 bore, and the wall thickness on each bore was greater than .400", with the biggest number being .430".
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Just a blind squirrel looking for a nut. |
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