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  #1 (permalink)  
Old January 16th, 2005, 05:15 PM
87TurboGirl's Avatar
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Question Flywheel ????????
Is there any identifing mark on the stock flywheel for an 87 GN? A casting number or does anyone even know the amount of teeth?

Thanks in advance!
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  #2 (permalink)  
Old January 16th, 2005, 05:35 PM
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Flexplate Turbo 81-87 (heavier piston/pins) 25512350
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1986 Grand National - Original Owner. 40 Over, Forged Pistons and Crank, 218/212 .498 Hydraulic Roller with 885 Lifters, Harland Sharp Roller Rockers, Fully Ported Stock Heads with 1.77 Intake Valves, Double Roller Timing Set, junk Silver Seal HV Front Cover, Port Matched Intake and EGR Tower Milled to the floor, EGR Blocked, PCV Blocked, Breather in each Valve Cover.
Turbonetics 60-1 Hi-Fi, FMIC, 50 pph, 3" Down Pipe, Ported Stock Elbow, 3500 Stall, ALKY Control, TT Chip.
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Old January 16th, 2005, 05:46 PM
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It is .105" thick
Gaer is .450" thick
160 teeth on the gear
13 3/8" in diameter

Can only reed a few numbers of the part number on mine.
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1986 Grand National - Original Owner. 40 Over, Forged Pistons and Crank, 218/212 .498 Hydraulic Roller with 885 Lifters, Harland Sharp Roller Rockers, Fully Ported Stock Heads with 1.77 Intake Valves, Double Roller Timing Set, junk Silver Seal HV Front Cover, Port Matched Intake and EGR Tower Milled to the floor, EGR Blocked, PCV Blocked, Breather in each Valve Cover.
Turbonetics 60-1 Hi-Fi, FMIC, 50 pph, 3" Down Pipe, Ported Stock Elbow, 3500 Stall, ALKY Control, TT Chip.
No Times on new Set-up. Body under Construction.
On Turbo Buick dot Com since 1998. Started Posting as Steve6332 Glad to Participate.
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Old January 17th, 2005, 09:18 AM
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The stock flexplate will have "TURBO" stamped into it. The NA flexplate looks identical but as someone mentioned, the balance is slightly different due to the heavier turbo pistons.
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  #5 (permalink)  
Old January 17th, 2005, 10:31 AM
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Where is "TURBO" stamped into the flex plate?
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1986 Grand National - Original Owner. 40 Over, Forged Pistons and Crank, 218/212 .498 Hydraulic Roller with 885 Lifters, Harland Sharp Roller Rockers, Fully Ported Stock Heads with 1.77 Intake Valves, Double Roller Timing Set, junk Silver Seal HV Front Cover, Port Matched Intake and EGR Tower Milled to the floor, EGR Blocked, PCV Blocked, Breather in each Valve Cover.
Turbonetics 60-1 Hi-Fi, FMIC, 50 pph, 3" Down Pipe, Ported Stock Elbow, 3500 Stall, ALKY Control, TT Chip.
No Times on new Set-up. Body under Construction.
On Turbo Buick dot Com since 1998. Started Posting as Steve6332 Glad to Participate.
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  #6 (permalink)  
Old January 17th, 2005, 10:49 AM
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Clean the flex plate off. It will be stamped into the flat area of the flex plate next to the holes. Email me later on and I can snap a pic of one to show you.
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  #7 (permalink)  
Old January 17th, 2005, 02:43 PM
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Quote:
Originally posted by GNVAIR
Clean the flex plate off.
Don't you know it!
I got a new JW flex plate but that dont mean I should not clean that old one off - thing has been on the garage floor for months and its getting crusty!

Thanks - will look for the mark
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1986 Grand National - Original Owner. 40 Over, Forged Pistons and Crank, 218/212 .498 Hydraulic Roller with 885 Lifters, Harland Sharp Roller Rockers, Fully Ported Stock Heads with 1.77 Intake Valves, Double Roller Timing Set, junk Silver Seal HV Front Cover, Port Matched Intake and EGR Tower Milled to the floor, EGR Blocked, PCV Blocked, Breather in each Valve Cover.
Turbonetics 60-1 Hi-Fi, FMIC, 50 pph, 3" Down Pipe, Ported Stock Elbow, 3500 Stall, ALKY Control, TT Chip.
No Times on new Set-up. Body under Construction.
On Turbo Buick dot Com since 1998. Started Posting as Steve6332 Glad to Participate.
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  #8 (permalink)  
Old January 17th, 2005, 04:09 PM
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