"70"
SERIES High Performance Street, Truck & RV:
The 70 Series Big Block II is designed around
a large Flowmaster case for maximum volume and efficiency. The
case is also 2" narrower than Flowmaster's original Big
Block muffler, making for easier installation in tight applications.
The 70 Series offers a mild mellow exhaust tone and incorporates
a Resonant Tuning Chamber for reduced interior sound levels.
Legend
for Chart
ISL
= Interior Sound Level
ESL = Exterior Sound Level
OE
= Original Factory Equipment muffler
FM
= Flowmaster muffler
Application
Recommendations:
High
Performance Applications
Late
Model Truck with single exhaust and catalytic converters
Tow
vehicles and RVs
Trucks
with dual exhaust (H-Pipe is strongly recommended in all
dual exhaust applications
