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Old 09-10-2019, 07:52 AM   #881
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Originally Posted by cadillackid View Post
you will want to adjust the BASE timing also.. get a timing light , disconnect the ESC timing wire and then set it to the sticker.. which is usually 0 degrees advance (I know this is not what you are used to for a gasser but the computer controls total timing.)


people often try and mess with the timing on these TBI engines by twisting the dizzy but then they just bounce off the Knock sensor and never truly run like they are supposed to..



id the engine is cammed then you may want to burn a chip with a little bit more aggressive timing in the mid range but stock, the ECM did a decent job..

I found a bunch of the old OBD-1 ALDL software I wrote years ago.. I almost had a TBI Bus but the seller was an asshat so I didnt get that one..

-Christopher
IIRC the chevy guys say they advance the timing like 7 degrees?

I definitely want to burn a chip for it. I want to eliminate the speed limiter, the egr, and I want to set it for a 180 thermostat.
Its not cammed, although a cam and heads would really make it nice!
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Old 09-10-2019, 07:58 AM   #882
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it should be tagged for the base timing.. mine were always 0.. but the bigger trucks may have been different.. I think the tall decks were for sure..



I used to try and run em out a few degrees.. the software i wrote hada counter that showed the 'ticks' the Knock sensor racked up so Id run it where id get a few ticks when i first punched it.. as normal for all chevies.. but wouldnt tick up much when i was running it out... I know I still have the cables I made for that stuff around the house.. the software ran on windows 95.. lolol wrote it in like Visual Basic 4.0 or something ..
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Old 09-10-2019, 08:03 AM   #883
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Very cool!
I'm ordering a bunch of new connectors and that tps today.
The original "weather" connectors are so old and dry they're crumbly. Would you be able to program a prom chip for me if I send you one?
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Old 09-10-2019, 04:41 PM   #884
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Not quite a school bus, closer to a work van, has AC though, if I figure out how to get it to work
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Old 09-10-2019, 04:43 PM   #885
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Groovy, man!
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Old 09-10-2019, 05:30 PM   #886
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you got that thing? Dang I cant keep up with what you have lolol
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Old 09-10-2019, 10:03 PM   #887
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single wheel rear axle, so it is a one ton
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