Im thinkiing about picking up a 70mm tb for my all motor lsvtec set up. I was wondering if it would be too big?.

heres my set up.

Block:
ITR pistons

Head:
stage 3 port and polished by sinister motoring
super tech flat face valves
resurfaced twiced.
skunk2 manifold
blox type b cams w. gears
basically all the bolt ons.

 

70mm might be a bit big for your setup. Id stick with a 66-68, heck even a 62 would be fine.

*Your last username probably got banned due to the fact that it contained a racial slur*

 

oh.. yeah i have a 65 right now


about my username. honestly no one got offended by it. until some moderator did. its funny how hes white and he got offended. its the white folks that gave us viet folks that name. we should be the ones getting offended. atleast give me a warning. i wouldve changed it.

 

Dependiong on what the car is really varies. A 70mm will give you alot more air flow which is good. This will be noticeable on the track and not really show up as such a great gain on the dyno. But a 68 will be a great choice. I have installed several 70mm on stock LS's and noticed nice gains and fantastic throttle response.