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Ok here it is.. I’m building my first turbo LS.. 6.0 with a gen 2 7875.. and wondering what size to go with on the hot size.. the turbo is twin scroll flange so my plan is to run two either 2 inch or 2.25 inch pipes straight to the turbo with no merge.. does that sound good..? any Advice would be greatly appreciated.. I will use something like this..
Last edited by chinaoreo; Aug 18, 2019 at 08:57 PM.
Reason: More pics
Go read one of the stickeys titled something like why does everyone do 2.5 cross over pipes. In my opinion go twin scroll 2.25. Its a good all around compromise.
I have built 2.5 merge to a single 2.5 to a t4 and it will make 700+ to the wheels. but if you want to jump ahead build a devided 2 1/4 hot side to a s475 75/96. it will spool great and be a ton better on the top end. I have done a lot of these and the t6 spools faster on a 6.0 than the 78/75 combo's ive seen
I have built 2.5 merge to a single 2.5 to a t4 and it will make 700+ to the wheels. but if you want to jump ahead build a devided 2 1/4 hot side to a s475 75/96. it will spool great and be a ton better on the top end. I have done a lot of these and the t6 spools faster on a 6.0 than the 78/75 combo's ive seen
Wow really..! That’s surprising to me that a bigger turbo would spool up faster than the 7875.. my gen 2 7875 is divided flange so my plan is to run two.. 2.25 pipes to the t4 flange with that merger I posted a pic of.. sound good.. ?
Last edited by chinaoreo; Aug 20, 2019 at 10:53 AM.
Reason: Misspelled
Wish I would have known earlier..but just today got my gen 2 7875 delivered.. atleast they are on sale this month thru VSR.. and it sure is pretty..! Lol
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6.0 gen2 7875 hotside 
