Which TB for a 398 stroker?? 52 or 58
#21
TECH Fanatic
iTrader: (2)
for the 398 LT1 you have go with a 58mm TB and even a monoblade TB if you can. throttle body size doesn't hurt the motor's performance and even ported intake manifold doesn't hurt, it is the heads that have been over-ported will hurt performance.
but you have to tune after you install either the 58mm TB or the monoblade TB.
but you have to tune after you install either the 58mm TB or the monoblade TB.