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ejw 71
03-13-2006, 09:07 AM
Will roller rockers for a 396/427/454 work on a 348/409? Thanks. Ed
raymar58454
03-13-2006, 10:11 AM
Yes they will, but will be 1.70-1.73 instead of the W engine 1.75. Cat racing makes a 1.8 that I am using in my buildup but burrs in head where pushrods go through need to be cleaned up for clearance.
Ray
ejw 71
03-13-2006, 12:14 PM
Thanks, Ray. Where are Cat Racing roller rockers available? Ed
dq409
03-13-2006, 01:58 PM
Scorpion make the 1.75 !! Great roller rockers and a great company to do business with. They will back their products and reputation !!!dq
raymar58454
03-13-2006, 04:10 PM
ED, Igot the 7/16 1.8 stainless roller rockers off ebay. Cost for them with polylocs was $178.99 including shipping. The sellers ID on ebay is horsepower-wd. If you cant find him there try searching item #803571875 which are the ones I bought but should get you to his ebay store. Nothing against scorpions, Just thought a darn good price for stainless. I machined my heads to use stock length BB screw in studs and able to clear stock rocker arm covers. .100 of intake stud bosses and .200 off exhaust stud bosses. I am using stock length BB 2.065 in and 1.74 ex valves also.
Ray
tripowerguy
03-13-2006, 06:43 PM
You have to go to bigger rocker arm studs because 348 and 409 are 3/8 the 396/454 rockers take 7/16 studs. Roy
dq409
03-13-2006, 08:08 PM
Link:http://cgi.ebay.com/ebaymotors/Chevy-BB-BBC-Stainless-Roller-Rockers-Rocker-1-8_W0QQitemZ8046239555QQcategoryZ33614QQrdZ1QQcmdZV iewItem

Or the Scorpion`s 1.75 :http://cgi.ebay.com/ebaymotors/Scorpion-roller-rockers-BB-396-454-Chevy-1-75-7-16_W0QQitemZ7914884532QQcategoryZ33624QQrdZ1QQcmdZ ViewItem