Quote:
Originally Posted by 87chevy.com
how did you measure push rod length?
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i did not measure them using the stock 7.400 push rods i had no problem with them using the 600. lift single springs just now with the dual 660. its causing all the noise i guess i will pull the valve covers and check the pushrods i did use new lifters they are oem dont know if they maybe part of the problem