351W
Registered User
I have read many times that the C6 is lacking in gears for a truck. A 7,000-lb truck hauling up to 15,000-lbs needs more gears. Sometimes, apparently, a 3-speed automatic is not enough. So with the wide ratio gearset, 2.71:1, 1.55:1 and 1:1 gears, where do I need another gear? I can see needing a gear between second and third gear. Do I really benefit from adding a gear between first and second gear? I would thing that down low I want fewer gears spaced farther apart but up high I want more gears spaced closer together.
2.71:1
do I really benefit from an additional gear here? (2.11:1)
1.55:1
1.21:1
1:1
.78:1
Obviously I am going to just have to build a 6.9L IDI and experiment for my self but this should be pretty universal. I have read that the fuel consumption really goes up with sustained cruising rpms over 2,000 rpms. I get 15-mpgs cruising for 100 miles + in my '05 F-150 5.4L 24V a t~3,000 rpms (OD locked out) or ~2,100 rpm (OD on). Now it seems that larger engines really need to be kept throttled down. I am thinking that 1,800 rpm is the appropriate cruising speed for fuel economy but maybe as much as 3,000 rpms is safe.
If the C6 is missing gears when towing than so is the E4OD. I know about Gearvendors but I am not convinced that I need to split every gear.
2.71:1
do I really benefit from an additional gear here? (2.11:1)
1.55:1
1.21:1
1:1
.78:1
Obviously I am going to just have to build a 6.9L IDI and experiment for my self but this should be pretty universal. I have read that the fuel consumption really goes up with sustained cruising rpms over 2,000 rpms. I get 15-mpgs cruising for 100 miles + in my '05 F-150 5.4L 24V a t~3,000 rpms (OD locked out) or ~2,100 rpm (OD on). Now it seems that larger engines really need to be kept throttled down. I am thinking that 1,800 rpm is the appropriate cruising speed for fuel economy but maybe as much as 3,000 rpms is safe.
If the C6 is missing gears when towing than so is the E4OD. I know about Gearvendors but I am not convinced that I need to split every gear.