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Will grade 8 bolts be fine with tranny to bellhousing and pressure plate bolts?

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Old Apr 29, 2010 | 08:12 PM
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From: Winchester, VA
Car: 1991 Camaro RS/1989 Vert RS
Engine: 355/350
Transmission: T-5/T-5
Axle/Gears: BW9bolt3.45posi/3.23 Posi
Will grade 8 bolts be fine with tranny to bellhousing and pressure plate bolts?

Title.

If not help?
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Old Apr 29, 2010 | 11:42 PM
  #2  
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From: 51°N 114°W, 3500'
Car: 87 IROC L98
Engine: 588 Alcohol BBC
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Axle/Gears: Ford 9"/31 spline spool/4.86
Re: Will grade 8 bolts be fine with tranny to bellhousing and pressure plate bolts?

Bellhousing bolts only need to be grade 5. Torque converter bolts should be grade 8. Pressure plate bolts "should" be grade 8 with grade 8 lock washers.
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Old Apr 30, 2010 | 07:01 AM
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Re: Will grade 8 bolts be fine with tranny to bellhousing and pressure plate bolts?

Can't go wrong with using Grade "8" fasteners. Just will cost you more.
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Old May 1, 2010 | 03:48 PM
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: Will grade 8 bolts be fine with tranny to bellhousing and pressure plate bolts?

Any good bolt really will work for the bellhousing, but I'd just get the right clutch hardware from ARP or GM.
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Old May 1, 2010 | 08:35 PM
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Re: Will grade 8 bolts be fine with tranny to bellhousing and pressure plate bolts?

Originally Posted by Air_Adam
Any good bolt really will work for the bellhousing, but I'd just get the right clutch hardware from ARP or GM.
yes, the flywheel bolts in particular usually have thinner heads to clear the clutch. normal hex bolt head and washers will probably hit.

I use grade 8 for everything, really no reason for grade 5, unless its a part that needs to shear before something more important breaks. The price is not much different
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