Correct Size Throttle Body ?
Thread Starter
Safety Car
Joined: Feb 2000
Posts: 3,771
Likes: 0
From: MANDEVILLE, LA La
Correct Size Throttle Body ?
Doing upgrades this Fall going from stock to XFI268 Cam,AFR 190 Heads and Long Tubes.I don't have a clue what size Throttle Body I need.Stock is 48 mm .And a recommendation on Injector size.
Thanx for your help
Thanx for your help
Last edited by CAJUN C4; Jul 16, 2011 at 12:14 PM. Reason: added inj. info
Drifting
Joined: Dec 2007
Posts: 1,647
Likes: 4
From: Argillite KY
Since you seem to be looking at around 380-400 crank horsepower and torque probably in the 425-450 range I'd think that your stock 48mm should be OK. It's capable of around 750 CFM and that's good for at least 450-475 HP. If you go to a desktop dyno program and plug in a 58mm vs the 48mm the big one is about 2HP less. Torque would take a small hit as well.
Thread Starter
Safety Car
Joined: Feb 2000
Posts: 3,771
Likes: 0
From: MANDEVILLE, LA La
Since you seem to be looking at around 380-400 crank horsepower and torque probably in the 425-450 range I'd think that your stock 48mm should be OK. It's capable of around 750 CFM and that's good for at least 450-475 HP. If you go to a desktop dyno program and plug in a 58mm vs the 48mm the big one is about 2HP less. Torque would take a small hit as well.
Thanx
Guys
