Whats the stud size on a stock L98 engine. I got money for my birthday and from my tax return so im getting some parts (ac delete kit, slp runners, edelbrock intake, and rocker arms. heads and a cam this summer) I just want to know what the stock size is so i can buy them. Thanks.

-3rd

 

3/8"

RBob.

 

The stock size is 3/8 as above but if you are going to buy new heads and a cam down the road you may want to hold off buying new rockers until you buy heads. 7/16 studs are stiffer than 3/8, won't cost you any extra money to go with 7/16 studs in your new heads and 7/16 rockers at the same time. 7/16 is more suitable for higher performance higher rpm engines. Your stock heads have press fit studs so it is difficult to change stud sizes on your stock heads so if you buy now for your stock heads you will need 3/8.