opinion on my 91 burb

[iluvmy72]

Hey guys....I need to get some opinions and see if anything needs to be added to my list to get the 91 burb project at leasr on the road. I have done the lift, put on tires, Installed the 97 7.4 Vortec, Installed the 3.73 3/4 ton rear end, and removed the old 700r4. I am getting ready to Install the 97 4l80e tranny. I feel close but still feel far away. I only have so much spare time. How close am I really?

Need to:

order the custom harness for the ECM

swap out input spline for compatible 32 on the transfer case

install radiator and belt

install 4l80e after transfer case is done

A/C change over to use newer compressor

have alignment done

still deciding on:
-dual exhaust.....currently have cat and flowmaster single line
-clutch fan, flex fan, or electric
-getting a whipple.....eventually want 500 pony's but I can wait
-ordering headers
-what kind of oil for a 97 vortec with 60,000 miles that has sat for a year

[tvblazer78]

That is a big list. So are you needing to know what you should do? Or how much man hours do you have left on it? But it sounds like you have a big part of it finished and it's all about what you need at the end? A full blown custom ride or a good ride with come updates. And maney always plays a role in it too.

[USSkoval]

That sounds like a fun project! Sounds like you have most of the heavy work done, except for the tranny and t-case. Everything else sounds like good little weekend projects. Will you need to have your drive shafts lengthened/shortened?

[iluvmy72]

not sure just yet...I have to get the tranny in and see....I'm more concerned with getting the engine to go.

[justcuz]

What transfer case are you using? I would go with dual exhausts , clutch fan, no comment on headers(personal choice) and 5-30 or 10-30 on the oil.
I would crank the engine with out the ignition hooked up untill you show oil pressure on the gauge. Once you get pressure start it a few times and shut it off right away. then start and run it till it warms up completely. I did this with my 93 Suburban that sat for 6 months. That 97 engine has roller lifters so it is less of an issue with the cam but it still needs to be primed before starting.

[USSkoval]

Originally Posted by justcuz

Once you get pressure start it a few times and shut it off right away... I did this with my 93 Suburban that sat for 6 months.

That doesn't sound like a very good idea. What would be the purpose in that? Also, 6 months isn't very long for a motor to sit unless it's very humid conditions the whole time.

[justcuz]

It takes a lot less than six months for the oil to run down off the cylinder walls and the internal parts. All the oil ends up in the pan with a lot of your internal parts pretty dry (without lube). Thats why I prime it, then start and stop it a few times, to get the oil circulating but not putting much of a load on the engine.

[USSkoval]

Okay, but starting and stopping does put excessive load on the moving parts because there is less oil pressure while cranking. The correct method would be to remove the distributor, prime the motor with a drill and priming tool, reinstall the distributor, fire it up and let it run. It doesn't really matter anyway, because it's no big deal for a motor to sit for a year.