Documents converted to .pdf.
Original documents were MS Word and MS Excel.
Documents converted to .pdf.
Original documents were MS Word and MS Excel.
Thanks all downloaded.
Rich
A little update. Picked the engine up today after I had it broken in and ran on the dyno. Dyno sheet is showing 32 degrees initial advance BTDC and final advance @6500 rpm at 36 degrees BTDC and 37 degrees of timing. The engine ended up making 364hp and 460 ft-lb of torque. My next question for those of you experienced with tbi systems is if the tbi that I have would be able to support the horsepower for this engine. I have a gm tbi that has been bored out to 46mm. I'm not sure if I will be able to get enough airflow with it or not. If not I will need to go another route.
Thanks
use a big block throttle body it has 2" bores. vortec heads like 32-34 degrees total timing. i would not run 32 degrees initial. sounds like they didn't play around with timing much, just got your motor broken in and called it a day. post the dyno graph.
I can find 16197427s reasonable BUT no one can tell me anything about the van or truck they came out of.
They cannot tell me what transmission, engine of even if it was even running when hit.
My old friend who had a junk yard would often say when asked if a part was any good, “Well it was moving when it hit something.” He could then show you to car or truck it came out of. Sadly he passed 7 years ago and wife sold yard.
So looks like I will need to load the basic operating system for a 350V8, for a 4L80e and hopefully for lean Burn Cruse.
Can someone tell me how to do this and what tools will be needed??
And are all operating programs on the EPROM or do we need to make changes to the main ECM??
Best of all worlds will be to have a person load these programs to a eprom or chip as I also have a Moates Memory Adapter With a preloaded MPG custom chip.
Plus the older EPROM chips from my 93 350 4L60e 165 ECM, so how much of engine and transmission programs are in the EPROMs?
Can I just plug them into a 16197427 and just take off??
As this will be a fresh start up of a new engine I hope to have a good ECM to light it up.
Perhaps someone can sell one?
A 427 ECM or loaded EPROM or suggest a good tuner/programmer?
Rich
Here are my dyno sheets
dyno pg1.jpg
dyno pg2.jpg
dyno pg3.jpg
If I did the math correctly I should need roughly 70# per hour from each injector.
i think the 37 degrees is a typing error. i dont think you need that much timing with those heads, you will probably even pickup some more power lowering the total by 2-4 degrees. i thought BB throttle body was 350hp+ but listen to fast355 he has done lots of this stuff. i ran a BB theottle body making 375HP FWIW. I used a Caprice LT1 timing table to start with, but I am sure there are vortec ones available if you look.
you need 97#/hr injectors.
65# 350 injectors @ 29 psi
75# BB injectors @ 22 psi
81# BB injectors @ 19 psi
you will need to use a vacuum referenced FPR.
Last edited by tayto; 05-08-2022 at 09:00 PM.
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