Which Flexplate Bolts
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Joined: Nov 2003
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From: San Lorenzo, California
Car: 1987 Firebird Trans AM
Engine: 383 TPI...very soon
Transmission: TH700R4
Which Flexplate Bolts
I Must be search retarded, because I can never find what I'm looking for...
I need flexplate bolts for my engine, I don't know what length I need though, I see at Summit they have .680" and .725". The .680" bolts say 2 piece rear main, but they also fit the 400 style crank... now the .725" bolts say 1987 up 1 piece rear main, but they don't mention the 400 style crank.
So which do I need, since my engine is a 383 (400 style crank, right?) stroker with 1 piece rear main.
I need flexplate bolts for my engine, I don't know what length I need though, I see at Summit they have .680" and .725". The .680" bolts say 2 piece rear main, but they also fit the 400 style crank... now the .725" bolts say 1987 up 1 piece rear main, but they don't mention the 400 style crank.
So which do I need, since my engine is a 383 (400 style crank, right?) stroker with 1 piece rear main.
Thread Starter
Senior Member
iTrader: (1)
Joined: Nov 2003
Posts: 574
Likes: 1
From: San Lorenzo, California
Car: 1987 Firebird Trans AM
Engine: 383 TPI...very soon
Transmission: TH700R4
Hmmm.. ARP's catalog says that the .725" bolts are for external balance AND 1 piece rear main applications. So either way these gotta be the right ones (ARP # 200-2906).
Senior Member
Joined: Apr 2003
Posts: 678
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From: Grand Terrace, CA
Car: 88 Camaro
Engine: 310 LG4
Transmission: 700R4 w/2200 stall
Axle/Gears: 3.42
I bought ARP's from summit. Down side is they are 12 point and i dont have 12 point sockets 
I need another birthday!
I need another birthday! 
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