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#1
12-30-2005, 08:20 AM
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1997 4.3 Vortec, short block
I'm contemplating buying a 97 Olds Bravada that has a lower engine knock, figuring it is a rod or main bearing giving way. I'm wondering if there are any years of the 4.3 vortec that I couldn't use a short block from, ranging from 92 to 2000+. I'm figuring the 96 and up will be similar, I'm just curious if anyone knows if the 92-95 blocks are the same in case I were to find a good one in that year.
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Rod 1995 K1500 Ext. Cab Stepside 1997 Olds Bravada AWD 2001 Silverado LT 2500HD CC 4WD 2001 Yukon SLT 4WD 
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#2
12-30-2005, 09:21 AM
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Re: 1997 4.3 Vortec, short block
Best to use a 96+ (or late '95 w/OBD2). The front of the block casting was changed to provide better sealing for the 6-bolt plastic timing cover. This timing cover is needed to provide mounting for the crank position sensor. The crankshaft in a pre-95 engine will not be machined to accept the reluctor wheel of the crank sensor.
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#3
12-31-2005, 12:34 PM
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Re: 1997 4.3 Vortec, short block
Thanks for the info on the difference.
__________________
Rod 1995 K1500 Ext. Cab Stepside 1997 Olds Bravada AWD 2001 Silverado LT 2500HD CC 4WD 2001 Yukon SLT 4WD
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