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AJ, you certainly have a knack for thinking things through! Many have benefitted here. Took some time tonight to see what I could find out. All seemed normal driving around the neighborhood. What I did find is that my switches only activate the OD and lock-up when in drive, and have no...

Thanks again, AJ, that gives me some things to work with. I've sorta regretted not building the trans myself, as I've done everything else (engine, carb, headers, wiring, suspension, etc.) from front to rear myself. The trans the only thing I didn't, so that remains somewhat of a mystery...

Yeah, I've never done that one again!!! I'm running 4:11's and mostly drive around town, or runs on back country roads, only use the overdrive when on road trips on the highways. But what a blessing that is when I'm on the Interstate, to be able to drop the revs to 2700-2800 or so! (Maybe it...

Thanks AJ, good info, and as often, a bit beyond my knowledge, but thanks for the logical assessment. I am now recalling (best of my memory..) that I may have briefly heard something similar coming down from OD/lock-up cruise to near stop and switching (toggles) out of OD/lock-up when I forgot...

Couldn't get my phone to edit, but wanted to add that the 11" converter is a lockup unit.

Yesterday while running around town, when I put my 518 in neutral it (or converter?) responded with a very loud screech. (I had a similar quite disturbing sound once in the past, but it turned out the flex plate bolts were rubbing on my dust cover, removed it and left it off.) I pulled off to...

Large primary carb from 1973 440 truck. Throttle primary shafts have been rebushed with brass bushings. All new gaskets from Walker kit, ethanol safe pump, new x-rings, new choke pull-off, passages all cleaned and blown out with air, etc. Bowl checked for flatness, fuel wells checked, floats are...

TQ removed from eBay as I'm out of town for the month of February... I can still be contacted if someone is interested and can ship first of March.

See PM

Still available $345-. (I will gone for the month of February so could ship now or first of March) 1973 Thermoquad 6322s large bore (Performance build) From 1973 440 truck. Throttle primary shafts rebushed with brass bushings. Walker kit, new pull-off, ethanol safe pump, brass floats, etc...

Read full build and set up details on eBay. (I can't find a way to post a link as any search kicks me into the eBay app.)

I've listed this TQ on eBay, full description is there. From 1973 440 truck. Throttle primary shafts rebushed. Walker kit, new pull-off, ethanol safe pump, etc. Performance build based on study of old "demonsizzler" posts, and Mopar bible. Identical settings to what I run on my 340, which gives...

I'll be 75 in about a week, joined in 2014. Still learning and building stuff. Love driving, drag racing, mountain biking and Telecasters. Living out my teenage fantasies!!

With my 6322 I'm starting to wonder if I simply had too much spring in the rod piston with the fairly big cam I have in the 340. (Solid lifter with .235/.243 @ .050) This might be the reason the 6322 had the inconsistent idle A/F #'s, going way rich at times at idle.

As I first said, I've been working with two carbs. My original 6518 was working well until a brass float sank, and the fact that the throttle shaft was getting fairly worn. So I decided to build a 6322 that I had. I re-bushed the throttle shaft on that one, did a rebuild kit, new nitrophyl...

Finally up and running strong! New brass bushings for the primary shaft, new nitrophyl floats, and for anyone who's interested: .101/.149 jets (no choke) Rods are 67/52/42 .035 nozzles Floats set at 1" 2turns on the AV spring 1-1/2 to rods screw .060" drop on AV Open 17/32" from choke tower...

I know the float levels are good, and they are new nitrophyl floats. I'll pull it apart again, check the needle seats are tight in the cover, do a pressure test, double check the fuel wells, make sure the o-rings are in their proper place, check the air bleeds are clear, and lower the fuel...

Thanks for checking in, Bewy! I think secondary operation will be OK now, but two issues: 1) It doesn't want to drop the last little bit down to proper idle. Will close down seemingly smoothly, but it hangs up, so motor races a bit. Returns just fine with pump linkage removed. Maybe just...

OK, update details on the 6322, (even though I'm still not sure exactly how some of this happened.) First, the tiny hole hidden by closed secondary blade was clogged with carbon, so cleared that. I re-cleaned the fuel inlet passage to make sure there was nothing else to get in the seats. Blew...

Discovering some issues, will update as I am more certain as to what happened.

Always smells a little rich to me even when the A/F meter reads 14.5 or so. No black smoke, though there might have been when the A/F all of a sudden went from 14's to 10:1.

Apart, all seems good. I may have had something in one of the needle seats, not sure, but cleaned everything out again, and will reassemble. Checking my base gasket, all gaskets in both rebuild kits seem to cover the same holes, and be open in the same places, the only difference is in the...

Thanks, Bewy, Re: #3, To clarify, this sets the AV drop, and you are saying to check that there is a bit of wiggle/looseness so there is some drop set?? (It was set at maybe .020" but I increased it a bit.) [1] Haven't dismantled it to check the base gasket yet, or to check for debris in...

OK, THANKS!! I appreciate it, will pull it apart and clean it out. Damn, I'm getting good at dismantling Thermoquads!! HaHa! I'm going to re-bush the other carb as well, guess I'll just relax into some bench time. :-)

340 with Thermoquad and MSD distr. with 6A box, recent plugs, good wires. In my last Thermoquad thread I was diagnosing fuel leaking into the intake. Turned out to be a leaky brass float which I got fixed. This was a #6518s that I had rebuilt not long ago. ('74 440 "Industrial".) Also I had...

AJ, you may be right about the 38* timing being some indication of combustion efficiency. The weak spot in my "formula" isn't the heads (X-heads ported and chamber work by Bob Mullen back in the day) but definitely the old #2385 TRW pistons down in the hole. Probably should have changed them...

Thanks, AJ! I've learned a lot from this site over the last couple of years!! Pretty damn happy with the TQ!! Here's an overview: -Yes, transfers have been previously shut off. And it is primarily street (strip 2-3 times a year) and is an automatic. -No cold start issues as it's set up, nor...

I really appreciate that information. It was running fine, good idle, good off idle. So this is obviously one more example of my over-thinking things. (Bad habit I seem to have...)

OK, finally found an answer to the idle transfer port question.... Thanks, Rusty and Rumblefish! I'm sure AJFormS has written a book on this, but I always assumed he was talking Holley type carbs and wasn't sure if it was the same with Thermoquads. Please take pity on me re: ThermoQuad fuel...

No one ever answered this question from 2016, so I guess I'm just asking the same one all over again.... I'll brace myself for no answer this time... :D Thermoquad fuel transfer port/butterfly adjustment