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08-27-2006, 03:42 PM
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#1 |
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what happened to flint mi
Join Date: Oct 2005
Location: san diego
Posts: 436
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has any one ever seen a 90 over sbc piston?
who makes these things? i saw seven of them this weekend . and i thought 60 to 80 over was pushin it on a small block?
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71 swb 2wd fleet frame off in progress 72 4x4 blazer daily driver 70 olds cutlass s mint condition owned by a grandma 56 gmc 2wd project waitng 97 fiance mobile |
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08-27-2006, 03:49 PM
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#2 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: has any one ever seen a 90 over sbc piston?
I've seen an 80 overr 350 running on the street with no problems...but never heard of more.
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08-27-2006, 03:55 PM
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#3 |
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what happened to flint mi
Join Date: Oct 2005
Location: san diego
Posts: 436
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Re: has any one ever seen a 90 over sbc piston?
this 90 over had no problems at all the guy said he hauled over 7000 pounds from san diego to idaho no problems ther valves got all gummed up , ended up sticking and that was the end of that piston i guess that s why i saw 7 of them and not 8
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71 swb 2wd fleet frame off in progress 72 4x4 blazer daily driver 70 olds cutlass s mint condition owned by a grandma 56 gmc 2wd project waitng 97 fiance mobile |
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08-27-2006, 04:37 PM
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#4 |
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Senior Member
Join Date: Jan 2003
Location: daytonabeach
Posts: 22,956
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Re: has any one ever seen a 90 over sbc piston?
call up a manufacturer like aires they'll make up any type you could imagine i had an edsel engine once and jahns made me a set of 125over pistons
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71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY |
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08-27-2006, 08:46 PM
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#5 |
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I am a Referee of life.
Join Date: Jun 2000
Location: Greensboro N.C.
Posts: 13,992
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Re: has any one ever seen a 90 over sbc piston?
Usually only .060 over is recommended but that is due to casting shift.The mold used to cast the block shifts some when it is poured.The cylinder walls may be thinner on one side and not have enough material to bore more.The block can be sonic checked for cyl wall thickness.Some of the aftermarket blocks come with thicker cyl walls and can be bored much more.Another consideration is that the cyl wall needs to be thicker on the wall in direction of crank rotation.
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The 47-present Chevrolet and GMC Truck Message Board Network,it's owners,moderators,members,and associates of any type should not be held responsible for my opinion. You can't fix stupid,not even with duct tape. "My appearance is due to the fact that "GOD" does punish you for having too much fun!" Barrett-Jackson has perfected alchemy,they make rust into gold! "You can lead a horse to water but you can't saddle a duck" "Cleverly disguised as a 'Responsible Adult' "Sometimes your Knight in shining armor is just a retard in tinfoil" |
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08-27-2006, 11:56 PM
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#6 |
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Registered User
Join Date: Sep 2005
Location: San Angelo or Eufaula
Posts: 301
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Re: has any one ever seen a 90 over sbc piston?
I pulled a set of .090 over 350 pistons from an old chevy school bus a few years back. I've still got one, if ya need it!!
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08-28-2006, 11:15 AM
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#7 |
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Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Re: has any one ever seen a 90 over sbc piston?
Back in the good ol days you could buy 125's for almost any engine. They were rebuilt with more tlc back then.
My 350 had 80 overs installed by a p.o. You can almost buy another block for the cost of the pistons.
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Fred There is no such thing as too much cam...just not enough engine. 
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