383 initial setup

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twayne24365

twayne24365

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ill give you the basics first,
1965 383 bone stock bottom end
516 heads with 2.08 1.74 valves bowl port/blend and ports cleaned up
528 mopar cam
crane iron adjustables
street dominator intake cleaned up
msd 6al ignition
mallory distributor
fenderwell headers

72 dart swinger gutted
727 with cheetah reverse manule vb
3800 converter
8 3/4 with 3.91

i just ordered new head gaskets and valve seals to get it back together,
this motor went 12.60 in a 3500lb b body with a off the shelf 850dp, i have an 800 dp to put on it and my question is what is a good starting point for the primary and secondary jet size and squirters?
 
I love it! Sounds like a great old school setup :thumbrig:.

Pump nozzle wise, they all came with #31's F&R. That should be fine to get you started with that intake. As far as the jetting, there was a pretty good spread on the later model 800's vs the early carbs. Taking a wild guess at a starting point, I'd look at 72's up front & 80's out back. You can always sneak up on the secondaries when you get some Mph numbers under your belt...

Oh, and the 6.5" PV should be just about right with your cam, as long as the timing is good to go. :)
 
Thanks rick, and it is an older model 800 that i rebuilt, 6.5 powervalve in the front and the rear doesnt have one. also a 30 and 50 cc accelerator pumps.
 
try it stock first. to test the squirters have it in park and idling. open hood and with air cleaner off grab throttle and open and shut it as quick as you can. it should not hesitate at all. it it does up the squirter size 2 steps and repeat until clean and crisp. go to back road stick trans in 1st and smash the gas. if good good to track and jet for the best mph.
 
Look at whatever the stock jetting is from holley. There is a numerical listing on the holley site in tech section. I'd start there.
 
crackedback said:
Look at whatever the stock jetting is from holley. There is a numerical listing on the holley site in tech section. I'd start there.
Click to expand...

Cracked is a wise man.

Your combo isn't all that wild, thus the original tune in the carb is where to start. As you're chasing the best ET/MPH, change ONE THING at a time and keep good notes. A log book is your friend. A better friend is a weather station as even a few hundred feet in DA can effect power and thus ET/MPH.

Love the old school combo! If it's in a 3000-3200 A body, with the RIGHT converter and traction, you should be able to generate a very low 12 second time slip.

PS - (If I'm reading correctly that it's a use motor) While it's out and after it's bolted together, a leak down test would be on my to do list. It's worth the piece of mind to know it's sealing up well.
 
Oh its certainly used, pistons, crank, rings and barings have ever been touched, it could use a rebuild but its the toughest motor ive ever seen, sure it has some blow by and burns a little oil but im just throwing it in to get my car on the road, so after its running i gotta decide to put my 440 together or get a rotating assembly and rebuild the 383, the thought o a 7000 rpm 383 intrigues me
 
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