Quote: Glad to see this thread. I am thinking of ordering the TTI system for by '65 B-body. I have to decide:
1) 2.5" or 3"? Motor is a 493, dynoed at 586 HP, 620 ft/lbs 2) H pipe or X pipe? What are the pros and cons of each?
Also, does anyone know if the US Cartool "bolt to the crossmember" driveshaft loop will work with the TTI exhaust (either H or X tube)?
Definatly 3"!!! A 3 inch over a 2.5 is actually 44% bigger That is a lot of flow man. The hp loss difference is quite substantial and At about the same money??? guess on your motor a 2.5" system will cost you 60 hp over open and a 3" will cost you 20 hp over open!!!
