04 Tahoe 6.0 NV4500 2wd
08-18-2019, 09:39 PM
#41
yeah, it did; thanks!
now just let me know next time you hook your trailer up. i reckon it'll take a little more 4th gear use, but that sounds like a decent compromise given the better DD cruising.
ps - since it was late, i could get away with this test the other night... but i managed to pull 20mpg out of the old girl coming back from dallas (something i ain't managed since right after the 5.3 swap when everything else was stock + tune)
33s, 4.30 gears, headers, 219/224 cam, a/c on, and still using 87 octane
but i had to keep it between 55 & 60 the whole way. driving 75-80 drops to 15mpg.
now just let me know next time you hook your trailer up. i reckon it'll take a little more 4th gear use, but that sounds like a decent compromise given the better DD cruising.
ps - since it was late, i could get away with this test the other night... but i managed to pull 20mpg out of the old girl coming back from dallas (something i ain't managed since right after the 5.3 swap when everything else was stock + tune)
33s, 4.30 gears, headers, 219/224 cam, a/c on, and still using 87 octane
but i had to keep it between 55 & 60 the whole way. driving 75-80 drops to 15mpg.
08-18-2019, 09:50 PM
#42
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Might get a chance to tow my tractor across town this week which is a pretty stout load maybe 10k? Not really sure. Won’t get up above 60mph because it’s just back roads but I’ll let you know how it goes. When towing I like to use 4th a lot anyway maybe I wrong but I feel OD is not really meant for bogging with a trailer. No idea I'm not a towing pro by any means.
20mpg is pretty dang awesome! Idk what the heck is wrong with my RCSB it gets terrible MPG even before the blower. I did a 2 hour drive 100% highway at 65mph never had to stop or even slow down and only got 12.5. Towing it gets 6.
How do you like that cam? The 212/218 112lsa in the Tahoe is so mild it’s nearly nonexistent (which I like for a DD tow pig). But I have the same cam in the 6.0 I'm building for the RCSB and now realize I will want much more.
20mpg is pretty dang awesome! Idk what the heck is wrong with my RCSB it gets terrible MPG even before the blower. I did a 2 hour drive 100% highway at 65mph never had to stop or even slow down and only got 12.5. Towing it gets 6.
How do you like that cam? The 212/218 112lsa in the Tahoe is so mild it’s nearly nonexistent (which I like for a DD tow pig). But I have the same cam in the 6.0 I'm building for the RCSB and now realize I will want much more.
08-18-2019, 11:51 PM
#45
for sure, you probably shouldn't use 5th with 10k (or a 1/2 ton chassis for that matter), but with lighter loads, it's usually fine.
granted, i ain't seen 20mpg in 8yrs (and that was babying it then, too). my average is just under 16 mixed driving, but i've also got a smooth foot. towing the car's usually 12-13 at 65-70.
it probably helps that i've only cranked the front bars - no lift at all, and i have a bed cover. your new topper will likely help a little. the 4.8s were also never known for their torque at 2000rpm (cruising speed) either.
the cam's alright - definitely validates the 4.30s, though. took Justin about 3 tries to get the low-speed bucking to a minimum, though. it'll occasionally surge a little when pulling out of gear & coasting but not bad or often. it'd probably do gooder in a 6.0, even with stock gears, since 1-3 are deeper on the 4500.
sure lopes decent at idle.
granted, i ain't seen 20mpg in 8yrs (and that was babying it then, too). my average is just under 16 mixed driving, but i've also got a smooth foot. towing the car's usually 12-13 at 65-70.
it probably helps that i've only cranked the front bars - no lift at all, and i have a bed cover. your new topper will likely help a little. the 4.8s were also never known for their torque at 2000rpm (cruising speed) either.
the cam's alright - definitely validates the 4.30s, though. took Justin about 3 tries to get the low-speed bucking to a minimum, though. it'll occasionally surge a little when pulling out of gear & coasting but not bad or often. it'd probably do gooder in a 6.0, even with stock gears, since 1-3 are deeper on the 4500.
sure lopes decent at idle.
08-21-2019, 06:41 PM
#46
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for sure, you probably shouldn't use 5th with 10k (or a 1/2 ton chassis for that matter), but with lighter loads, it's usually fine.
granted, i ain't seen 20mpg in 8yrs (and that was babying it then, too). my average is just under 16 mixed driving, but i've also got a smooth foot. towing the car's usually 12-13 at 65-70.
it probably helps that i've only cranked the front bars - no lift at all, and i have a bed cover. your new topper will likely help a little. the 4.8s were also never known for their torque at 2000rpm (cruising speed) either.
the cam's alright - definitely validates the 4.30s, though. took Justin about 3 tries to get the low-speed bucking to a minimum, though. it'll occasionally surge a little when pulling out of gear & coasting but not bad or often. it'd probably do gooder in a 6.0, even with stock gears, since 1-3 are deeper on the 4500.
sure lopes decent at idle.
granted, i ain't seen 20mpg in 8yrs (and that was babying it then, too). my average is just under 16 mixed driving, but i've also got a smooth foot. towing the car's usually 12-13 at 65-70.
it probably helps that i've only cranked the front bars - no lift at all, and i have a bed cover. your new topper will likely help a little. the 4.8s were also never known for their torque at 2000rpm (cruising speed) either.
the cam's alright - definitely validates the 4.30s, though. took Justin about 3 tries to get the low-speed bucking to a minimum, though. it'll occasionally surge a little when pulling out of gear & coasting but not bad or often. it'd probably do gooder in a 6.0, even with stock gears, since 1-3 are deeper on the 4500.
sure lopes decent at idle.
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