any 1/4 miles times? what does the truck weigh?...Originally Posted by pl4yboy
any 1/4 miles times? what does the truck weigh?...
It was a NNBS RCSB z71. From my research only, it weighs around 5100-5200. My only 1/4 time that was on the bottle was a 14.5. It was on a 125 wet shot and the bottle had less than 800 psi. I had to let out 3/4 track and coast through. From a 30 roll on a 150 dry, I was 1.5 lengths behind a 13.1 second SRT8 Jeep.
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4
Really? This actually prolongs the life of a 60E? Very interesting
~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~
This is a post made by freemasson on TBSSowners.com. Input from Vince (formerly of FLT) is included.
but this is tranny survival 101 per ol' free-AZZZZ -
this trans is designed as a drive and overdrive tranny and GM did us all a HUGE DISSERVICE when they marked this tranny with D - 3 - 2 - 1...
3 is driect drive (which means DRIVE to the lay person) and it should be thought of as drive and the trans is at is BEST when the gear selector is in DIRECT DRIVE, it routes the fluid in the vavle body to maximize the clutch application and makes the trans the most efficient and stable that it can be......
D is over drive (which means NOT A RACING GEAR to the lay person) and it should be thought of as ,exactly that, OVER DRIVE not RACING GEAR....the valve body fluid flow in D is that of over drive to make the trans operate in a smoother and softer manner which creates slip in the clutch packs (in our trucks with the HIGH HEAT and WEIGHT) and thus causes UNDO or PREMATURE WEAR....it also creates the slip/bank shift sequence that is so HARMFUL to these trannys.....
it is a combined 1-2 punch combo on these trans that is causing them to die early....i killed 3 trannys becuase of operater error and most all these that i've seen die could have been avoided to a large degree......
the killers:
HEAT - get alvin's fuggin cooler on now if you do not already have it or a reasonable facsimile
WEIGHT - CAN'T DO **** ABOUT IT it is what it is........DEAL WITH IT and CHANGE THE AREAS YOU CAN....
Gear Selection - keep the trans in direct drive EVERY TIME YOU HAMMER IT PERIOD......EVERY TIME, not just at the track or when i want to race or what not......EVERY TIME YOU HAMMER THIS TRANS IT SHOULD BE IN DIRECT DRIVE (drive for the lay person) and that gear selection on our gear selector is 3......GOT IT 3
IN SUMMARY: Keep the fluid as COOL as possible, keep the trans in direct drive unless you are on a free way cruise or be DSICIPLINED enough to put it in driect drive (3 on the selector) before you beat on it
1969 Chevy RCLB C10 350/TH400 SOLD
2007 Chevy RCSB 4.8 4x4 LS SOLD
2008 Chevy RCSB 5.3 4x4 LT SOLD
2010 Chevy CCSB 6.2 4x4 LT SOLD
2005 GMC CCLB DRW 6.6 Duramax 4x4 191,000 and counting
2013 FORD CCSB F350 6.7 Powerstroke 4x4
how about the theory of lower gears? seems logical, dont know if there is any truth to it. i was reading on another forum about a guys tranny builder telling him no 4l60 would last in his tahoe without lower gears.
5.3 2wd upgrades: Nelson tune, stainless lt's, magnaflow, e-fans, msd's, cai.
Thanks again. This is some helpful info and I wish I knew this sooner - maybe I wouln't have killed my last 60E
~ Forged engine of some type ~ Ball bearing turbo of an unconfirmed size ~ 4L8000 trans ~ Beefy fuel system ~
Lower gears would allow the vehice to accelerate with less effort from the engine. But at wot with good traction you are going to be putting the full torque of the engine through the tranny regardless of the gear ration in the rear end. It wont make any differece as far as longevity as far as I can tell if you plan on drivintg it hard.
99 silverado 2500 4x4 ec lb, lq4 with 243 heads, pace setter long tubes, true duals with x pipe and bullet mufflers, comp 222 224 112 cam, 8.1 truck injectors, 4l80e with 2800 stall, 373 gears, 285 75 16 tires, efi live tune in progress, 350rwhp 360tq, 11.8 average mpg mixed driving
I believe gears help alot, It takes load off of the clutches and band and can help them from slipping as easy.....Ever drive a 5 or 6 speed with a clutch thats starting to go bad? Notice it slips more or easier the higher the gear you are in..very similar to having a taller rear gear.
Good info to know.
"ALisSa1 Silverado"1990 Chevrolet RCSB● 2002 Chevrolet Camaro LS1/4L60EScrimpin Ain't Easy( . Y . )
when i first got my 2008 silverado brand new in late 07' i slapped a 112 magnacharger on it with 4.8...blew the trans at 2900 miles lol...60e's suck
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