I am trying to put a TBI set up on my 85 GMC burb and have most of the parts sourced to do it but will need to get a chip burned for it to properly run. My problem is I know that it has a small cam installed in the engine but I dont know the specs on it. Is there any way to tell the lift etc or will I need to just buy a new cam so I know all of the specs for a chip burn? Thanks for the help.
CK5
Register an account today to become a member! Once signed in, you'll be able to participate on this site by adding your own topics and posts, as well as connect with other members.
determining cam specs for a chip burn?
- Thread starter rescue6
- Start date
You *really* need to have a datalog to get a good burn.
In actuality, it would be much easier for you to do this, and probably not much more, if any, expensive, then have someone like Brian at tbichips.com burn you a chip to work with what you've got, than to swap cams just so you know what it is.
In actuality, it would be much easier for you to do this, and probably not much more, if any, expensive, then have someone like Brian at tbichips.com burn you a chip to work with what you've got, than to swap cams just so you know what it is.
That is what he means. The datalogging will tell Brian everything he needs to know to burn you a proper chip.
If i were you i would first see how much vacuum the engine makes with the cam you have in the engine, if it doesn't produce at least 17 inches of vacuum then the cam is too big and won't work with FI.
thank you for the input I will check on that first thing Monday.
I have a ALDL cable that I will sell for $25 (I will be posting this to the for sale section soon). It has a serial end on it and bare pins on the other end. It does not work with my 16147060 ECM and laptop set up (8192baud). I will be buying a different USB cable from ALDL cables.
Let me know if you are interested.
Let me know if you are interested.
Not true, just more work and I've never seen it done mail order. Only hands on.
Yes, click data logger and only select sensor data. Then go to BLM and coose wide avarage. Try to fill in as many boxs as possible. When your done driving around click save data in BLM then save in data logger and post the files here. We can see how far off you are.
Just be careful, your setup is going to run lean at WOT, if not at all other ranges as well. Datalogging isn't going to tell you much about WOT without a wideband O2 sensor.
Yeah what he said.... 
So don't go melting a piston at WOT to start. ALDL is going to get you tuned from idle to about 3400 rpm. Wideband O2 sensor is really needed for top end.
So don't go melting a piston at WOT to start. ALDL is going to get you tuned from idle to about 3400 rpm. Wideband O2 sensor is really needed for top end.
Exactly!
Just try to fill in boxs in the Wide BLM table. Half throttle and drive around town. If no SES lights come on take a little highway cruise.
Just try to fill in boxs in the Wide BLM table. Half throttle and drive around town. If no SES lights come on take a little highway cruise.
