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When I drove my 1969 Swinger 340, 4 speed, with a 3.55 rear end gear, on the expressway at 75 mph (3,500 rpm), it overheated at 220 degrees, in only 2 miles. Driving on back roads at about 45 mph, the temperature gauge always remained at about 180 degrees. The 340 was rebuilt a couple of years...

My 1969 Swinger 340 has an intermittent, one time miss/cutout which causes the car to jerk. It seemed like the ignition system cut out completely for a second. It always happened when I was cruising back roads, at about 2,000 RPM. This was nothing like a spark plug misfire. At first, this...

I'm looking at purchasing the OER Radiator Number MA2246A, from Classic Industries, for my 69 Swinger 340, 4 speed. This radiator is a 3 row for an automatic. The stick 3 row and 4 row radiators have been back ordered for a long time. My original radiator number is 2949066, which I believe is...

I purchased 69 Dart small block heater hoses from Mancini. It turns out that the kit was for two 5/8" hoses (same thing at Classic Industries). I've read Forums here and it sounds like most 69 Darts had two 5/8" hoses. I don't know if my heater core is original, but one hose is 5/8" and the...

I replaced my Idler Arm on my 69 Swinger about 5 years ago with a Moog Idler Arm. I heard a clunk recently while turning the steering in the garage and noticed that the bushing end with the large bolt and nut had slop. I removed it, secured the bushing end in a vice and tried to rotate the arm...

Does anybody know who sells an Intake Manifold fitting for a 1/2" Heater Hose on a 340? The fitting would need to reduce from 5/8" at the Intake Manifold to 1/2" for the Heater Hose. I bought Mancini fittings, but the Heater Hose fittings are 5/8" on both ends, which is fine for my 5/8" Heater...

Does anybody have the complete December 2002 Mopar Action article entitled “PAN-DEMONIUM; OIL CONTROL FOR STREET ‘N’ STRIP? Mopar Action History – December 2002 This article is about fabricating a homemade baffle for a small block oil pan. Attached is only one page of this article that I...

I had a 340 short block rebuilt in 2018. I pulled the engine this winter because the rear main seal and the timing cover seal leaked and a bad lifter knocked occasionally, for a few minutes after startup. I thought I might as well get the cam lobes checked since I already had the 340 torn apart...

Sorry to beat a dead horse yet again. In 2015, I read countless posts on the 1969 340 engine color. The vast majority of them stated that the 1969 340 was painted turquoise, therefore, that’s what I painted my 340 in my 1969 Swinger. In addition, as I recall, the 1968 340s were painted red, the...

My 69 Dart Service Manual states that the 10" front brake lining is 2 1/2" wide. Is that correct? I only see front brake shoes for sale that are 2 1/4" wide.

The clutch grinds on my 1969 Dart 340, 4 Speed, when I fully depress the clutch toward the floor. I recently installed a McLeod Borg and Beck Pressure Plate. I believe that I have the clutch adjusted properly with 5/32” slack at the fork and 1” at the pedal. Has anybody else ever encountered...

Does anybody know if there are published Chrysler specs on the pilot bushing ID, OD and installed ID? Also the crankshaft pilot hole ID and an Input Shaft OD? I may have my 340 crank rebushed. I know the Brewer Website states some specs on their pilot bushings, but I wouldn't mind verifying...

I live in Jackson Michigan. I had a bad experience with an engine builder/machine shop in the Detroit area and I need to get my 340 short block rebuilt again. Are there any recommendations for a quality and reputable engine builder and machine shop within a couple hours drive (maybe even in...

I purchased a 340 dated December 1968. It appears to be completely stock and doesn't appear to have ever been apart. The pistons and rods have original casting numbers. But I can't find any casting number on the crank. The crank is a steel one and the first and last rod journals were drilled for...

I had my 340 rebuilt in my 69 Swinger. After 600 miles the clutch started grinding when the pedal was fully depressed. It turned out the Bell Housing was misaligned by .019” total and the clutch disc was hitting the flywheel bolts (the builder told me he aligned the BH as I requested). I should...

Has anybody ever seen anything like these lifter bores? The engine is a 1969 340. I'm wondering if this was a really bad engine casting and if this block is junk. Thanks for any input.

This is a long and complicated question. So for intrepid Mopar problem solvers, get your reading glasses and here goes: Last summer I ordered a 10 1/2” McLeod Borg and Beck clutch and pressure plate for my stock ‘69 Swinger 340. I received the scalloped 10.95” PP, an 11”clutch disc (sizes as...

Does anybody know the correct width of 1969 Dart front drum brake shoe lining? I am planning on having a pair relined. All the vendors show 2 1/4" width but the attached Service Manual indicates that it is 2 1/2" wide. I would at least like to achieve the best stopping performance possible with...

After putting about 600 miles on my new McLeod Borg and Beck clutch in my 69 Dart 340, it started making a grinding noise when the clutch pedal was fully depressed. I sent the Aetna throw out bearing to the McLeod tech department for analysis. They said it was damaged and also showed...

Does anybody know if these 2 little rubber pieces on the end of the Master Cylinder Pushrod can be purchased? This is for an original Master Cylinder for drum brakes on a 69 Dart.

Does anybody know where I can buy a reman OEM starter for a 1969 Dart 340. I tried one from Autozone and looked at many pictures on the internet (Classic Industries etc) and all seem to have "ears" and bolts on the solenoid that hit the flange on my exhaust pipe where it bolts to the HP exhaust...

I am going to prime my 340 before I start it. I don't want to take my original valve covers off because I painted the engine with them on and I used RTV on the gaskets because the valve cover rails on the heads were not perfectly level. I think that each head receives oil in only 1 position...

I am having an alignment issue between my damper and water pump pulleys on a 69 Swinger 340. The width of the outside edge of the water pump pulley (at the V) measures 5/8". The damper pulley measures 3/4". So there is an 1/8" difference. Since there is no power steering or air conditioning...

I had my 340 rebuilt. When installing the water pump and damper pulleys I noticed that the damper pulley is slightly closer to the block than is the water pump pulley. It's hard to tell but maybe 1/16" or more. I didn't notice if it was that way when I tore it apart. It's a different block...

On my 340, I replaced the heads with 1.88 valves with 1971 heads with 2.02 valves. I was going to use the Felpro cork gaskets from the gasket kit, but I noticed that both heads seem high in the center, so when I push on one end of the valve cover the other end has a gap. Has anybody else...

I am going to paint my 1969 Dart 340 the original turquoise. Does anybody know what items were painted at the same time as the assembled engine e.g. water temperature and oil pressure sending units, heater and bypass hose fittings, the nut and clamp that hold on accelerator cable. I know that...

I was planning on using the cork gaskets on my stock 1969 340 intake. The machine shop didn't return my front and rear dowels. I purchased 3/16 dowels but they are too loose. Does anybody know if these are supposed to be 3/16 roll pins? Thank you.

I was intending to keep my 340 factory appearing, as is the rest of the car. I had it rebuilt and told the machine shop to install a new stock Mopar Performance damper. Instead they bought an aftermarket damper, with the timing mark and index on the wrong side of the engine and balanced the...

I am rebuilding a 1970 340 for the street, not for racing. My 69 Dart has stock a AVS, intake, 2.02 heads, and stock exhaust manifolds. It is a 4 speed with a 3:55 rear end. I’ve read that the compression ratio should be less than 10:1 to run on pump gas. I wanted to error on the safe side, so...

Following is a picture of the paint behind my grille. I know that it is supposed to be blacked out with flat black paint. Does anybody have a picture of exactly what is blacked out on an original 69 Dart. I suppose the 67 and 68 Dart would be the same.