Coupler studs

[gbeltran]

Anybody know the size of the studs for the coupler on a 4.3 Cobra, 1990 vintage? Going to replace the long block but don't know if the studs will cooperate and remove easily, would rather have a new set just to speed up the process. I know the thread pitch is 7/16-20, just want length since I'm not paying 12 bucks a shot for 'em from the boat shops when I can probably get all 6 for that at the local bolt place. Thanks
Greg