Originally Posted by et7333
Did you see a gain over the 1 3/4 headers with the 1 7/8 headers?
I've never ran 1 3/4" headers on this car, my friend Jimmy smith with a 67 Camero changed from 1 5/8' 3" collector to 1 7/8" with 3 1/2" collector picked up 2 mph.
He weighs 3,000lbs runs a 355' motor on gas with aussie heads, purchased before RHS bought them out, and it runs 6.70's
Zip.