peterro wrote:Any issues with me jumping on this thread. Very similar build (440 Challenger). I suspect I may be having issues with sync loss as well but I need some help. I had to stop working on the car for a bit as I was getting a bit burned out and frustrated.
The symptoms are that it coughs and sputters and usually dies when attempting to start. Occasionally it will hunt around and figure out an "idle" at ~2700 revs. When it does that, the tach is very stable so it at least does run. I've captured the logs of a couble attempted starts but can grab more if necessary. I'll attach that and the current tune.
Thanks again all. I'm also interested in what manifold/etc you used with the 383. My father-in-law is interested for his Roadrunner.
Hey peterro
No problem with you getting in on this thread, but I am sure that starting your own thread would get you some better answers. I understand the frustration too... my build was a pretty solid 6 months of evenings and weekends and towards the end, I just wanted the whole car to disappear!
For my intake, since there are no EFI intakes available for a Mopar 383/400 (Indy has a couple high $$$$ ones in their catalog, but I question whether they actually exist), I decided to modify an older Edelbrock 383 Torker intake. I have very low "machinist capabilities", but I was able to make some holes in the runners (to match an Edelbrock fuel rail) with a tiny little drill press, and then epoxy (Belzona) in some injector bungs, and fabricate some brackets to hold the fuel rails. There is a reason why most shops want close to $600 to do this... it took me a really long time to do it.
I topped the modified Torker with an Accufab 4150 throttle body (1215 cfm!) on top of a 2" open carb spacer (required to mount the throttle & kickdown cable stuff), and combined with a 14" dropped base air cleaner and 3" filter, it all fits under the stock hood.
As for your sync troubles, I only know what my experience was... those pot adjustments fixed all of my sync issues.
I based my build on RedMist's' 440 build and also the articles in Mopar Action (which also appears to be based on RedMist's build)