Thread: GM part number help
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Old 02-18-2010, 02:25 AM
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Default Re: GM part number help
1st design & to add a lil more to what all have said.
1968-69 Police w/396 w/solids.
1967-69 Chevelle-Camaro w/396 w/solids.
1966-69 Impala series w/427 w/solids.
1965-66 ALL w/solids.
Alot of BB solid lifter springs became inferior as engine speeds increased.The warranty claims grew,so Chevrolet switched to spring #3970627 beginning with very late 69 & 1970 model production.
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