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I am looking for information/advice regarding setting the fast idle screw position on a thermoquad for cold starts. Neither the shop manual or the carb rebuild instructions are explicit on this - at least not that I can find. Some carb adjustments are made with the fast idle screw on the top...

This spring it has been nearly impossible to get the car to fire up. I have never had ignition problems before so this is a new experience. I have an MSD 6A ignition module and am using an MSD blaster coil. When I put my timing light on any of my plug wires and crank the engine see no spark...

I decided I would like to remove the oil pan on my '73 340 car. I planned on replacing the oil pump and pickup tube along with new rear main oil seal. The shop manual makes it sound so easy to get the pan off. However that is not my experience. I have the pan loose, and free moving, but I...

This spring when I get the car out of storage I plan to replace the front disk brake rotors, and while I am at it, I might as well do wheel bearings too. Do any of you know which bearing set to use for the outer bearings? All online lists I check show the same bearings for the inners (ie...

This summer has spelled the end for the rear main seal in my stock 340. I am now getting puddles of engine oil under the bell housing, and I am down to 500 miles/qt, so I guess its time to tackle the seal replacement. The engine is stock, and to my knowledge the rear main is original. I read...

I have a stock '73 340 RR with custom bent 2.5" exhaust with X pipe (still using stock cast exhaust manifolds). I am having trouble finding a muffler that suits my ears. I have tried the Dynomax VT - wonderful sound at idle and no drone, but just too loud on the highway when its running...

Well, the car is tucked away for a winter sleep and I have been thinking about next year's projects on it. I have decided to install bushings on the primary throttle shaft of my 6319SA Thermoquad (small bore primary version). This past summer I was noticing a periodic whistling sound that...

I have been cruising through the various threads regarding auxiliary transmission coolers. The question I have is what return temperature to target? Is the objective to get the return temperature as low as possible, or is there a preferred operating range? I checked the shop manual and it...

I have a lingering issue that is puzzling me, and maybe one you folks have an idea. Its a mystery puff of blue from the exhaust. On start and warmup there is not evidence of blue in the exhaust. Under normal operation their is no evidence of blue in the exhaust, and the plugs are looking...

I have a friend with a 340 Challenger (yes I know this is B bodies only - but he needs help guys :-) ) that he just can't get fired up unless he dumps gas down the throat of the carb multiple times. Cranking the engine just doesn't seem to get fuel to the carb. Once its running, it runs...

I am planning to replace the gasket between my TQ 6319S carb and the intake. I see that there are two styles available - one open between the bores, and one closed. The gasket in place today is the open style. The open version is twice as thick, so more insulating properties from manifold...

I intend to add a headlight on buzzer to my car - I always forget to turn off the headlights. Can anyone tell me where the buzzer is normally mounted, and where to find the connector in the harness? I have searched around the headlight switch and under the instrument panel near the seat belt...

I am in the process of rebuilding my stock 6319SA thermoquad. The caps under the main jets were leaking fuel, so I removed them and have them cleaned up ready to re-install on the thermoplastic fuel bowl. The question is what adhesive works best for this application?

I have a stock 340, with the original distributor in it. I have been working on the new Demon carb to improve off idle throttle response. Today I noticed that when I hit the throttle, the timing light shows that the advance first drops 5-7 degrees, then picks up as the engine accelerates and...

I have the front sway bar pulled off to replace the original factory bushings with polyurethane bushings. I realize now that the cushion in my bushing kit is actually on the front strut not the sway bar (like my rear one is). I am not familiar with the details of suspension, so am wondering...

Looking for experience and recommendations for long tube headers for a '73 340 B Body (manual steering). What fits best and easiest to get installed. Appreciate the thoughts.

I have a stock '73 340 RR automatic with factory intake and 6319SA Thermoquad. The wells on the TQ are leaking, so I epoxied them and re-assembled the carb - however who knows how long it will last. So, am now beginning to think its time to make some changes to let the engine breath better. I...

I have been decoding the broadcast sheet for my '73 Runner. It shows a sales code of S51 on Line #12 of the sheet. Also wondering about code S78 on Line #12. I understand this to be power steering, but the car did not come with power steering, so a bit confused what it means as well (P/S...

I had my thermoquad apart on the weekend, and managed to mess up the spring that adjusts the closing tension on the secondary air valve. Anyone know where to find one? An old "parts" thermoquad might be the only answer, but thought I would ask...

I have a stock 73 6319SA on my 340. The metering rods installed are the stock 1966 rods. The jets are 4098's (98 thousanths jet size I believe), which I believe are the stock ones. I read that the old jet sizes should be reduced to lean out the mixture with the quality of the gasoline we get...