how much more hp will i see with the fast intake, compared to ls6 intake with these mods, and should i get the 75mm throttle body or the 90mm

222/224 566/568 112
pp stage 2 ls6 heads
comp 1.75 rockers
lt headers
ls6 intake
85 maf
air lid

 

If you get a 90mm LSX intake, then you need the 90mm throttle body... can't use a 75mm.

 

is it worth it over a ls6 intake

 

The 90/90 is definitely worth some over the LS6 on a heads/cam setup...

 

i dont see no point of buying a 75mm over the ls6 now the 90 is a different storry