Will valve covers from a 5.3 work on ls1s?
#2
if not use the truck brackets. so long as they are centerbolt if yours is a 99+ ls1 they will bolt on, do a cross on the coil brackets on GMpartsdirect or some other OEM parts retailer to see if the part numbers are the same.
#4
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Cool thanks. Do they need different coil brackets or were you able to use ls1s coil brackets? I'm also putting 243s on my 98. Also can the stock center bolt valve covers clear jesel rockers without spacers?