The claims from the sellers is, that it spools like a 62FMW and outflows a 66 so i guess we'll see... Im hoping with my supporting mods. cam, ported intake manifold, and bd exhaust manifolds. it'll spool well. It has the 68mm turbine of the 62fmw and a billet 64mm comp wheel, I'm having the exhaust housing and up pipes all ceramic coated too. you'd think it would outspool the 64fmw with a smaller turbine... I don't think bell will disclose the A/R's
this is from irate's website:
When adding fuel upgrades to your 6.0 it is just as important to match the air flow into the engine to maintain efficiency and get the most performance out of your application. the BASB turbo works with stock (tuned) injectors all the way to 225cc injectors. It will spool fast and move more air up top than an S366!!
Bell Turbo BASB, this turbo is built by Pius at Bell turbo and is an excellent towing turbo and those looking to be around 450-600hp with excellent towing characteristics. This turbo has the new high flow wheel and will spool faster than than its brother turbo due to the standard t4 housing. You can now add the billet wheel to the BASB for even better spooling and better turbo MAP!!!
I assume its brother is the 7.3L version