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Carbaholic

12K views 244 replies 28 participants last post by  kb65 
Any of you carbaholics out there have an Autolite 4100 1.08 for a manual transmission car that is before a July 13th 1964 assembly date? I have three but the closest I've gotten is July 28th or something.
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Message received! Two of the three I have I would consider good, one for certain was removed from a running 289, the other looks good is free but probably needs to be gone through, the other everything but the choke is seized. :( they are all 1.08s from 1964, only one has a tag. The runner as far as I can tell is unmarked besides the 1.08 circle. The others have, IIRC, C4ZF on the base. I can take more photos once I'm home from work if anyone is interested in finding out more.
 
Wow - I like that. I don't have enough knowledge to confirm whether it truly is from 64/65 - but if I had money burning a hole in my pocket...
Agreed. My pay day is tomorrow, but the mortgage comes first sadly, and I would never be able to tune that set up myself!
 
Race carb. Didn’t have provisions for PCV, so I put one in it

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Looks like nice work! I finally did some screwing around on my Holley. Starts a lot better, stumble mostly gone. Only 10" of vacuum though. But at least it's steady.

Next step is I think I need to retime it. Part of my problem was I had the advance hooked to manifold vacuum. Seems to like the timed port better. I also adjusted the squirter cam position.

Only issue now is I borrowed my timing light to my neighbor to use on his boat. He then sold the boat. And forgot my timing light in the hull!
 
Yeah, gotta have timing & PCV all squared away. Ignition all has to be 100%, no vacuum leaks, fresh gasoline, stable fuel pressure. Without all of that, carb tuning is just chasing one‘s tail.

Tell me more about your motor, maybe I can help with that stumble.
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'66 289 .030 over, balance and blueprinted, factory cast iron heads (ported/smoothed I'm told) 10:1 Probe flat tops, Comp Cams high energy FS 268H-10, pertronix III ignition and flamethrower coil, factory dizzy, motorcraft plugs, Holley 4776-7, 1" open spacer, edelbrock performer dual plane, long tube headers, billet flywheel, centerforce clutch, 3spd that someday will be removed for a T10. Factory fuel pump (never got around to upgrading but it seems to do the work) anything else? Possibility of a 302 crank/289 rods, but doubtful. Had the pan off a number of years back, think it's still 289 stuff.
 
You‘ve built a nice piece, lots of good parts 👍
First thing I’d do (after sorting out the ignition/timing) is try a four-hole spacer. Really strengthens the vacuum signal. I suspect the transfer circuit is a little lazy; a different spacer just might wake it up.
Thank you, I'll track one down and see if it improves anything.
 
@ArizonaGT Is this big Holley worth saving? Is it anything special? It's missing the choke set up if it ever had one. 4781-5TA, maybe 6TA? Hard to read. 2284. Two metering blocks, double pumper, looks like mech secondaries.
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My caliper is at work, the plates are stamped 180, but it looks close with the yellow tape, not very precision.
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