Stock is fine.
Where are you finding a lot of options for D series girdles? As far as I know, no one does anything for the D series, only the B series. ARP or others dont even make main studs for our engines.
On most versions of the D, the main caps are part of the girdle, and they are matched and machined to the block they came with. They are not interchangable with other blocks without getting a different girdle line bored/honed to match the block. Making a girdle for our engines would require the company to have the block in order to machine the two pieces to match, golden eagle does for their B series girdles.
Another reason aftermarket manufacturers likely dont make anything for our engines is 1) its a D series, and 2) the girdle also doubles as the main oil galley for the bottom end of the engine. This likely isnt a showstopper for aftermarket companies wanting to make girdles, but it is another source of liability if something broke. B series engines dont have this problem.
Where are you finding a lot of options for D series girdles? As far as I know, no one does anything for the D series, only the B series. ARP or others dont even make main studs for our engines.
On most versions of the D, the main caps are part of the girdle, and they are matched and machined to the block they came with. They are not interchangable with other blocks without getting a different girdle line bored/honed to match the block. Making a girdle for our engines would require the company to have the block in order to machine the two pieces to match, golden eagle does for their B series girdles.
Another reason aftermarket manufacturers likely dont make anything for our engines is 1) its a D series, and 2) the girdle also doubles as the main oil galley for the bottom end of the engine. This likely isnt a showstopper for aftermarket companies wanting to make girdles, but it is another source of liability if something broke. B series engines dont have this problem.
