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1/11/11 1:39am - Original Message: 'Should I worry about the pitted Rod Bearing Journal?'
jp75vette
Former Member
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Bloomfield Hills, MI - USA

Vette(s):
1975 Corvette coupe, 4 speed manual, 383 ci 9.5:1,Edelbrock dual plane Air Gap intake, Alum Heads,Comp Cam, roller Rockers, PS,PB,Tilt

Joined: 6/29/2008
Posts: 199
One other thing I observed in the tear down is that one of the rod bearings had noticeable pits per the photo below.
 
Should I be worried about this? The oild passage way hole is much larger than the pits and the pits have smooth edges. The crankshaft is a GM casting number 395159; which based on my research; this is a cast crank that was used in 1970-1980 400 cid SBC. It has the XL mains; 2 piece seal and is externally balanced.
 
Do I need to woory about this? If so, what recommendations do you have?
 
What are recommendations on bearings?
 
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1/11/11 6:12am - Reply: 'Should I worry about the pitted Rod Bearing Journal?'
yostusota
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York, PA - USA

Vette(s):
1969 daytona conv. all original 350 350 380 4 sp w/air..and hard top

Joined: 5/18/2010
Posts: 1518
Looks like you are having some fun! The pitting is not a big worry since I assume you are going to have the crank cut...not a big cost at all..where did you find a 400? I haven't seen one of them laying around in some time..torque monster!
Rich

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1/11/11 9:13am - Reply: 'Should I worry about the pitted Rod Bearing Journal?'
Adams' Apple Lifetime 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: 19449
Crank definitely needs turned to get the pits out. You wouldn't wanna actually run that crank without having it turned, imho. The rod bearings having pits also would indicate that this engine may have been setting up for a while...
What are ya actually doing here? Building a new engine?


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