Hello!
I bought Procomp BBC 1.7 Aluminum Roller Rockers for my Chevy 250 (and for mine Dad's Chevy
153 L4) but I don't know that the studs fit them.
Everything I know is that the stock rockers for the 250 are 3/8 at top. But I don't know what
are the base thread size, top thread size or effective lenght, etc.
To illustrate my doubt here's an example I found inside of the descripction of an eBay product:
BBC Rocker Arm Studs, 7/16-20 in. Kit
Part Type:Rocker Arm Studs
Base Thread Size:7/16-14 in.
Rocker Arm Nut Thread Size:7/16-20 in.
Guideplate Locator Shank:Yes
Rocker Arm Nut Thread Length (in):0.850 in.
Effective Stud Length (in):1.750 in
Base Thread Length (in):0.800 in.
Is the Chevy 250 base thread 7/16 also or it is 3/8 as well as it top thread?
Can I use the item descripted earlier?
What studs can I use (SBC, BBC, ...)?
I expect that if they fit mine 250, they'll fit my Dad's 153. Won't they???
Please, need your help guys! Thanks a lot!!!