PDA

View Full Version : 383 hot cam


larry c
03-18-2023, 01:59 AM
Help! Need a good place to start on this 383. 10:1 230° @ .050" lunati cam, 2.02 heads stock tbi manifold and t-body. Just need to have idle on it's own then go from there. Set iac 255. Adjust timing back and forth. Still loads up. Even with e adjustments. Thanks.
dave w
03-19-2023, 03:39 AM
I'm curious to learn more about the EFI System and ECM / PCM your using.:thumbsup:
larry c
03-19-2023, 04:22 AM
1994 c1500 350/4l60e 16196397 ecm 15 psi fuel pressure. Thanks DaveW I've read a lot of your threads.
dave w
03-19-2023, 06:18 PM
1994 c1500 350/4l60e 16196397 ecm 15 psi fuel pressure. Thanks DaveW I've read a lot of your threads.

Something doesn't seem correct about PCM #16196397??? http://www.gearhead-efi.com/Fuel-Injection/showthread.php?1928-16172693-16184164-16184737-16196397-PCM-Information-P66-V6

Perhaps PCM #16196395??? http://www.gearhead-efi.com/Fuel-Injection/showthread.php?337-16196395-PCM-Information-OE
larry c
03-19-2023, 06:44 PM
Yes 16196395 OD mask
dave w
03-19-2023, 08:06 PM
Yes 16196395 OD mask

Please post a TunerPro RT data log, and the .bin file used to record the data log.
PlayingWithTBI
03-20-2023, 02:04 AM
Help! Need a good place to start on this 383. 10:1 230° @ .050" lunati cam, 2.02 heads stock tbi manifold and t-body. Just need to have idle on it's own then go from there. Set iac 255. Adjust timing back and forth. Still loads up. Even with e adjustments. Thanks.

I'm gonna watch this thread - I have a Blue Print 377 (4.000" X 3.75") with a Comp Cams XR282HR (230/236 @0.050") short block we just dropped in my 88. Hopefully we'll get her running next weekend. My Edelbrock 3704 intake was bored to 48mm with the TB bored to 46mm. Previously I was running 20 PSI with 61Lb/Hr injectors. I was thinking I may have to go with bigger ones.

One question and I'll get out of the way :popcorn:
What do you mean by "loads up"?

Good luck with your project :thumbsup:
larry c
03-21-2023, 07:25 AM
Loads up at idle as too rich then stalls. I will work on a data log.
PlayingWithTBI
03-21-2023, 07:30 PM
Loads up at idle as too rich then stalls

Maybe you pinched an O-ring on one of the injectors? You can shine a flashlight down behind the injector, while running, and look for an even spray cone with no drips.
Sledhead2
03-22-2023, 07:42 PM
Going to watch this one
larry c
04-01-2023, 09:00 PM
No log yet. Having pc issues. When the idle drops map rises contributing to the over rich condition. When i adjust idle ve table it seems good for a minute then will hardly run. Next post I will have a data log. Thanks.
dave w
04-02-2023, 06:33 PM
No log yet. Having pc issues. When the idle drops map rises contributing to the over rich condition. When i adjust idle ve table it seems good for a minute then will hardly run. Next post I will have a data log. Thanks.

Log with Air Fuel Ratios (AFR) would be awesome.:thumbsup:

Post showing AFR tuning, post #26: http://www.gearhead-efi.com/Fuel-Injection/showthread.php?5381-WBO2-Tuning-Spreadsheet/page2