HEY GRUMPYVETTE?
I see OEM HYDRAULIC lifters advertised for $8-$16 each, aftermarket hydraulic roller lifters
cost $420-$800 for a set?
why?
can I use the OEM roller lifters in my performance build?
your comparing apples to oranges
OEM replacement roller lifters are designed to run lower rpms and lift than aftermarket performance lifters, they are held strait on the cam lobes with 8 "DOGBONEs" and thats held with a SPIDER, the spider has limited lift capacity and screws into the lifter gallery, the blocks machined for the spider, either at the factory or the local machine shop. but the first gen blocks don,t have the required boss for the machine work, yes you can fabricate and get it converted but its not designed for nor will it work as well as the block its designed to fit in.
lifts above about .530 and rpms above 6000rpm are normally not advised and its generally restricted to original roller cam blocks with TALLER than NORMAL lifter bores ,although its possible to adapt them with mixed results
AFTERMARKET hydraulic roller lifters are DESIGNED for the early shorter lifter bores and are LINKED to stay aligned, and provide the necessary clearances in the shorter gen I sbc lifter bores
I see OEM HYDRAULIC lifters advertised for $8-$16 each, aftermarket hydraulic roller lifters
cost $420-$800 for a set?
why?
can I use the OEM roller lifters in my performance build?
your comparing apples to oranges
OEM replacement roller lifters are designed to run lower rpms and lift than aftermarket performance lifters, they are held strait on the cam lobes with 8 "DOGBONEs" and thats held with a SPIDER, the spider has limited lift capacity and screws into the lifter gallery, the blocks machined for the spider, either at the factory or the local machine shop. but the first gen blocks don,t have the required boss for the machine work, yes you can fabricate and get it converted but its not designed for nor will it work as well as the block its designed to fit in.
lifts above about .530 and rpms above 6000rpm are normally not advised and its generally restricted to original roller cam blocks with TALLER than NORMAL lifter bores ,although its possible to adapt them with mixed results
AFTERMARKET hydraulic roller lifters are DESIGNED for the early shorter lifter bores and are LINKED to stay aligned, and provide the necessary clearances in the shorter gen I sbc lifter bores