Originally Posted by JEFF69Z28
What about useing 6" straight thru mufflers bolted right to the collector? :?:
I doubt if a 6" straight thru muffler would have any effect on the evac system when bolted straight to the collector. i know that some tracks and some classes specify that you have to run mufflers and those types qualify as mufflers.
A good example is the 66 Biscyne with the 468" motor that i built, he runs on the street with some oval 18" mufflers bolted to the headers and it gets by the law. But he tried to run at Baton Rouge last yrs, spraying a 200 shot of nitrous. The car slowed down to 10. teens, and blew so much oil out it took an hour to clean the motor and engine compartment. Next pass we unbolted the mufflers and it ran 9,77 @ 138 and change. The car is really heavy so the engine is under load for the full 1/4 mi.
Zip.