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Welcome to National Carburetors - King of Carburetors Fairly decent prices.

I know that 3rd is 1:1. I need to know what the ratios are for 1st and 2nd in a 727. Thanks!

I have a rather modified engine, high compression, large cam, 408, and I need to know what the best way to time it is because there is no standard measurement for it. I can start with the recommended timing, which is 10-16 Initial, idle in other words, and ramp it up to 34-46 at approx 3000 rpm...

I need a sending unit lock ring, can't go anywhere without it...

I have a 408, I've been told that the Small Block Category is the correct place for this post. I have edited this original post because there was too much confusion as to what I am looking for with EGT readings. I understand that there are a lot of variables that affect the EGT "Normal" reading...

I need a retracting seat belt unit, I either need the passenger side black or both of them that emerald green type color, because my black drivers side still works. I need the parts mounted to the floor that retract the seat belts in a 1972 Dart or that will fit. I'm not sure what they are...

LOL! Had a shop do some exhaust work for me. They connected the front of the dual 3" pipes on my 70 Duster to the headers, but only put ONE hanger in the back behind the axle. This can't be right can it? Seems like I have always seen another hanger in front of the axle to take the load off the...

I know it is normal for a neg batt terminal to spark a tiny bit when you connect it. But mine kinda sparks more than that. I have an MSD 6AL, and a Derale fan system that has a controller that turns the fans on when the radiator gets hot even if the key is off. Is it possibly one of these? I...

I don't know why it seems I get all the strange problems, I have asked 8 mechanics whom I rely on for expertise and knowledge and they are all scratching their head on this one. I will start from a dead stop, bring it up to 10 mph, let off the gas, then slow back down. I can either hit the...

My friend said that there might be an access panel to the sending unit behind the back seat. Is this available in my 70 Duster? If so is it behind the upright back support or the horizontal butt support, or do I need to remove them both to get to the sending unit?

I need 2 orange cams for a 4150 holley

I need 2 orange cams for a 4150 holley.

I posted earlier looking for a 4777-2 carb. This is different. I need to practice drilling and tapping holes in metering blocks. My carb is brand new, and I don't want to practice on it... I need experience drilling and tapping emulsion holes, and the only way to get it is to drill and tap...

I need a 650cfm Holley, 4150 with a list number of 4777-2. I prefer an exact match. It does not need to be running, just working/needing rebuild. I know I will probably have to re-list this wanted ad a million times, but that's what I'm looking for. It was made in the 70's. Thanks, Bob

I don't know if this breaks the rules or not. If this breaks a rule, moderator please remove it. I didn't see where it says not to put links to external websites selling parts. I have been looking for a new rear view mirror, scoured around a bit finally found one. I found a perfect replacement...

For my 70 Duster with the small eyelet mounts, I have the larger size leaf springs with the larger eyelet holes. I'm not sure what bushings I need to mount them with and exactly how I am supposed to make the holes in the eyelet mounts bigger... I assume I could take them off and take them to a...

Got a 70 Duster. Got this snubber here on the forum. Just want to make sure it will fit for daily driving. Looks like it is tall enough for racing only. The adjustment may be the highest one for racing and the lowest one for driving... But I'm not sure. Just want to be sure.

My diff is new, it didn't come with a snubber. I bought one off this site, but it didn't come with hardware. What is the dimension of the length of threads and what is the thread count and diameter of the thread section of the bolts? I have an 8.75 w/a 489 Center.

How much should I ask for this 742 Sure Grip Pumpkin that needs gears, bearings on top of shipping??

Just got an 8-3/4 installed. I need to change the fluid and there is a female plug, looks about to be 5/8" square. Anyone know where to get either a 1/2 drive socket or a special wrench to fit it? Thanks

I have about a 650hp 408 H.P. that has a H.P. 727 behind it 2,500 stall. It is time to put a diff in. Some people are telling me a stock 489 8.75, with stock gears, race axles, stock pinion yoke, stock bearings, etc, will handle 700hp with an Automatic Trans. Some people are telling me I need...

I am looking for some billet steel yokes for my 70 Duster with a 727 and a 27 spline 8-3/4 diff. I cannot find them on Dr Diff, Strange, Moser, or Summit. Yukon is a bit expensive, so I haven't been looking there. I will buy used, new, out of box, as long as it's a good brand name. A little...

The Dumbest Thing I’ve Ever Done Today… I did something dumb, Okay, well, the dumbest thing I’ve ever done. The price of gas and groceries keep on rising, But in this day and age, I guess it’s not surprising. With the virus still around, been in my house for months, And with winter...

Anyone know if anyone makes a 170 Thermostat for a 1975 360? LA

I had a shop put my diff in. Problem is it makes noise at 30mph. Only around 30mph. But it is loud enough to hear over my engine, which is pretty loud. I went by another garage to day, he said the pinion nut is supposed to be torqued not impacted on. I saw the first garage impact it on. So I'm...

Got this Duster 15 years ago. Started with a /6, which I don't have a pic of, but then went to the engine that came out of a '72 Dart, 1st pic. Drove it a couple years, then upgraded to the 2nd photo, 12 years ago, but it took a long time to upgrade it. Sanded the rusty engine compartment but...

Need the depth, they are in a hard place to measure so I would need the diameter x threads size/# too. Thanks

Went to the parts store tonight, kinda in a jam, need to change out the diff fluid cause it seems too thin. I had a friend of a friend install the diff and I'm not sure he got the right Gear Oil in it. I found something called LubeGard "Limited Slip" Additive, but don't know because it doesn't...

This fuel pump is about 2 years old. You can see some oxidation on the outside of the pump, but it has been in the bag it came in which, I think, contributed to the oxidation spots. The Part# is 360586, retails for $21.99 by CarQuest: Advance Auto Parts - Down for Maintenance I will take...

I bought these ladder bars 14 years ago. I would believe that they are stronger than the ones they sell today, everything is made as cheaply as possible these days. I wire wheeled them to bare metal and sanded them, then hand brushed the oil based primer with 2 thick coats of "rusty metal...