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I agree with matched parts. My MPI EFI turbo 383 runs a rpm perf intake. We built a torker as well in case the distribution was bad. But it was good so I've never tried the torker. I use a sheet metal elbow and Ford style throttle body.

I can't leave the Holley Street dominator comment alone - published Dyno tests and my own experience shows it does drop torque to most manifolds but does make very good top end hp and fits where most manifolds with the same top hp won't

I've had MPI since 2009. I personally don't believe it's superior to today's TBI offerings. Myself and a good friend found that, surprisingly, MPI works just fine with dual plane intakes. Many people think otherwise. I've always had really even distribution with my rpm perf intake. I...

I really like ecu controlled timing, and it's critical with my turbo setup. NA you could keep the old dizzy and just add fuel I suppose if you got into a bad spot, but I do think it's worth the effort for timing control. It's very nice to have 5* timing while cranking, 20* at idle, 45* at light...

I've always stored with a trickle charger to save the battery anyway. Your efi system does need to have options on what signal it can accept for timing. You can only only use lean burn if yours can support inductive pickup. I bought the fancy dual sync dizzy years ago on sale in the event I...

My fury has been running a classic f.a.s.t mpi since 2009. I did not rewire the car. I did run some new circuits though. Walbro 255 pump hung on the frame rail, it is noisy. Oem lean burn dizzy is the cheap way for computer control timing if you don't choose to use dual sync

Bob is a master of irony, using many words to complain about someone else's verbosity.

Since you've used 2 carbs probably psi related. I'll make you feel better by saying I have one proform body Holley that I have never been able to keep from intermittently doing this. Even swapping bowls off another carb that works fine. I have no explanation for it.

For anyone interested a guy just tested several intakes in the racing forum at moparts.com

I wouldn't grind the Chrysler part number off it, that is useful to stock racers

No joke I ran 2" of spacers on top of a torker intake on a mild 383. The more spacer I put on it the faster it went at the track. I should have tried 3"! One of those things you wouldn't think would work on paper but it liked it

66 AFB will use inner holes

https://www.motortrend.com/how-to/mopp-0209-383-engine-restore/ You'll see 18hp for headers, another 12 for carb, another 40 for intake, and then another 49 for big cam. Their m1 single plane is the wrong choice here of course along with the cam. It would have been interesting to run the...

The old resto to rad articles on 383 and 440 showed power added at each step. That 1966 afb is going to be the literal bottleneck however. I wouldn't pay big money for any non oem intake with that carb unless it's been worked by a stock class racer.

What carb are you using?

Tanks Inc local to my hometown. I wouldn't trust a weld and keeping that area flat to hold a seal. You'll just keep chasing it. When I replaced the sender in my charger and then filled it it dripped pretty good. I fought the lock ring for an hour. Luckily I didn't split the tank like that

Dosens Carburetor Carb Cleaner... amazon.com/dp/B076LJSY3P?ref=ppx_pop_mob_ap_share

Dosens Carburetor Carb Cleaner...

I would have thought 1 jet size would be enough but I'd play with 2-3 just to see. Your wb is a great asset. Richen the idle a bit, just to see what happens. If nothing happens go back to timing and spark, retard it 2* then and see what happens. Sounds like either a lean surge or still...

What system? Are all the sensors functioning?