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Topic: Pressure Plate to Flywheel bolts

in Forum: C3 Driveline Components


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Pressure Plate to Flywheel bolts (1/7)
 6/23/12 3:02am
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.


Joined: 8/25/2005
Posts: 857

When I took everything apart about a year ago I put all the bolts for various items in separate baggies and labeled them.  Funny thing, though, I don't have a baggie for the pressure plate.  I guess I probably should use new ones anyway?  (I do have new bolts for the flywheel)  Are those just grade 8 shoulder bolts?  How long?   Parts store or Ace Hardware?  Do I need to spring for ARP's?  

I'm planning on installing the motor in the morning.  Still haven't completely committed, but I'm hopeful....


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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
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Re: Pressure Plate to Flywheel bolts (2/7)
 6/23/12 9:32am
corvette440hpLifetime Member
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Posts: 8205

Dave they are grade 8 (180,000psig) 1 inch long 3/8-16. Here is a link to ARP (Summit Racing).

http://www.summitracing.com/parts/ARP-130-2201/



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corvette440hp
Re: Pressure Plate to Flywheel bolts (3/7)
 6/23/12 9:34am
corvette440hpLifetime Member
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You can even buy 200,000 psig, but I don't think that you are going into serious drag racing.

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corvette440hp
Re: Pressure Plate to Flywheel bolts (4/7)
 6/24/12 1:15am
daveo76
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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.


Joined: 8/25/2005
Posts: 857

Thanks for the advice, Larry!  I went to a local performance parts store this AM before I started and bought ARP's for both the flywheel and the pressure plate.  (I had previously bought a set of flywheel bolts, but they were generic, probably made in China).  I used this nifty tool from ARP to download the instructions for the flywheel bolts


but the instructions for the pressure plate bolts had "not been uploaded yet".  How hard can it be?  I took a chance and used my own improvised method: 55 ft-lbs (from my Haynes manual), blue loctite on the threads, and a little ass'y lube on the underside of the washers.  Sound OK?  


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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
Re: Pressure Plate to Flywheel bolts (5/7)
 6/24/12 10:16am
Adams' AppleLifetime Member
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Duncanville, TX - USA

Vette(s):
#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


Joined: 11/8/2003
Posts: 20126

Did your new clutch assy come with an alignment tool, or did you have one to line the clutch up when you tightened the pressure plate bolts? Hope so!
55 lbs/ft is fine on the pp bolts...loc-tite may be overkill, since the bolts usually have lock washers, but that's otay, too. Can never be too careful, right?Thumbs Up

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Joel Adams
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Re: Pressure Plate to Flywheel bolts (6/7)
 6/24/12 11:29am
daveo76
Former Member

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Vancouver, WA - USA

Vette(s):
1976 Silver/Firethorn. L48, 4spd. Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.


Joined: 8/25/2005
Posts: 857

Thanks, Joel.  Yep, clutch came with alignment tool and I used it to line up the disc.  Shouldn't have trouble there, at least.  

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1976 Silver/Firethorn.  L48, 4spd.  Original 2 bolt, vortec heads, 9.4:1 CR, Speed Pro Cam: 224/224@0.050, 112 LSA, Eagle Steel Crank.
Re: Pressure Plate to Flywheel bolts (7/7)
 6/24/12 11:51am
corvette440hpLifetime Member
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Dave.............Thumbs UpThumbs UpThumbs Up

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corvette440hp
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