What did you do to your NNBS GMT900 Tahoe/Yukon Today?

[Doubeleive]

I've noticed mileage really starts to tank when going over 80 mph, so I'm not surprised yours is that low

truth! I noticed that a long time ago but I can't resist i'm a serial speeder have been my whole life

 

[Geotrash]

truth! I noticed that a long time ago but I can't resist i'm a serial speeder have been my whole life

Hence the 6.2L!

 

[Doubeleive]

Hence the 6.2L!

ya and i'm in real trouble if I ever put a supercharger on it, I just can't bring myself to spend the money-yet

 

[RooTBeeRthe1st]

I'm a lot more of an accelerator than a speeder.

Stop light to stop light...making a pass on the highway...

I really need to get that darn cam and supercharger in the engine bay. Pretty sick of looking at boxes.
It's tough without a garage and when it's your daily.

 

[89Suburban]

Finally had time to investigate the hack job splice on my heater line in the front wheel well. Oversized hose clamped down with screw clamps. One I sliced the old hose off saw the hacked up hard line. Cut the bad sections out with a tubing cutter. Installed new silicon hose and spring clamps. Made some insulating sections of hose where things may rub. Went a little bit overboard with the clamps just got extra sealing force and insurance. Fired it up and ran the coolant temp and pressure up to test for leaks. Came out great. One less thing on my mind to worry about. That old hose was beat and dried out. I use hose pinch pliers on the engine bay heater hoses to keep the coolant in the engine/radiator from draining out. Drain pan had about a quart and a half of fluid that came out.

 

[Rocket Man]

I'm a lot more of an accelerator than a speeder.

Stop light to stop light...making a pass on the highway...

I really need to get that darn cam and supercharger in the engine bay. Pretty sick of looking at boxes.
It's tough without a garage and when it's your daily.

Shit I installed my blower the first weekend it wasn’t raining, in my driveway. The cam was the same after I tried to get a shop to do it and they all told me they needed to pull the blower to do it. I tried explaining you don’t need to pull the heads or intake to swap cams in an LS and they all said BS. A couple weeks later I swung by and let them listen to the lope just to rub it in. And every time I worked on it, it needed to be driving by Monday so I could drive it to work. Just do it!

 

[gooffeyguy]

Shit I installed my blower the first weekend it wasn’t raining, in my driveway. The cam was the same after I tried to get a shop to do it and they all told me they needed to pull the blower to do it. I tried explaining you don’t need to pull the heads or intake to swap cams in an LS and they all said BS. A couple weeks later I swung by and let them listen to the lope just to rub it in. And every time I worked on it, it needed to be driving by Monday so I could drive it to work. Just do it!

How do you get the lifters off the cam?

 

[Rocket Man]

How do you get the lifters off the cam?

Spin the cam a few times by hand to get the lifters in the trays and then stick a dowel in through the oil passages from the front of the engine so they can’t fall down. I did both my trucks like this. There’s instructions in this link but they talk about buying a set of tools when actually it’s a pair of metal dowels. Iirc they’re 5/16 diameter, I can check the ones I made. They have to be long enough to reach the back of the block so I just made them a bit longer than my new cam. There’s other sites with instructions too.

LS1Howto.com

 

[swathdiver]

From what I understand, the E85 tables (spark/fuel) are seperate from the regular fuel tables. Many tuners don't mess with the E85 tables.

I run the 93 (or 92/91 whatever it is) octane Diablo tune and run E85 when not running 93

The thing I'm not sure is at what Ethanol percentage the ECM switches tune tables. @swathdiver

I believe there are high and low tables, my mpgs are basically the same E0 through E30 and the same E40 through E85.

 

[RooTBeeRthe1st]

Shit I installed my blower the first weekend it wasn’t raining, in my driveway. The cam was the same after I tried to get a shop to do it and they all told me they needed to pull the blower to do it. I tried explaining you don’t need to pull the heads or intake to swap cams in an LS and they all said BS. A couple weeks later I swung by and let them listen to the lope just to rub it in. And every time I worked on it, it needed to be driving by Monday so I could drive it to work. Just do it!

Also not done buying parts.
Kind of want to buy an alum block and just do a fresh build at this point.