They're 1 5/8 and are only temporary. In keeping with my OE theme, I can't get the shields modified in a reasonable time frame to fit around the tubes of the Hooker replacements I have so they'll have to wait. Hookers welds are ugly and the tubes have a couple of dings I need to cover up with the shields. The tubes on the Hookers are 1 3/4 so I figure it will be an automatic performance improvement once I get the car sorted out. The Hookers look exactly like the OE Corvette manifolds with the exception of the larger tubes.
I'll still be able to wind this mouse pretty tight even with the restricted exhaust. Back in the day most of the headers were 1 1/2 until some point they went to 1 5/8 and then on to 1 3/4. I had three 69 Z28's that never complained about the header pipe size, they were just too glad to rid themselves of the cast iron. ...
I'll still be able to wind this mouse pretty tight even with the restricted exhaust. Back in the day most of the headers were 1 1/2 until some point they went to 1 5/8 and then on to 1 3/4. I had three 69 Z28's that never complained about the header pipe size, they were just too glad to rid themselves of the cast iron. ...