# 1970 Dodge Dart - Vintage car valve seats? **URL:** \ **Category:** Maintenance/Repairs\ **Tags:** dodge\ **Created:** [December 7, 2018, 4:58pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394 "2018-12-07T16:58:36Z")\ **Posts on this page:** 10\ **Page:** 1
**Author:** ![MichaelVasko](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@MichaelVasko](https://community.cartalk.com/u/MichaelVasko)\ **Post date:** [December 7, 2018, 4:58pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/1 "2018-12-07T16:58:36Z")
How do you know if your vintage car needs valve seats? ---
**Author:** ![Mustangman](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/mustangman/32/44130_2.png) [@Mustangman](https://community.cartalk.com/u/Mustangman)\ **Post date:** [December 7, 2018, 5:10pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/2 "2018-12-07T17:10:31Z")
Brand spanking new or vintage car; the procedure for diagnosing bad valve seats is the same. You run a dry and then wet compression test on all cylinders. If both the wet and dry test shows low compression in that cylinder, the valve seats are likely not sealing. A leakdown test will also show bad valve seats but you need to listen at the exhaust and intake for the “hiss” of leaking valves. ---
**Author:** ![oldtimer-11](https://avatars.discourse-cdn.com/v4/letter/o/e79b87/32.png) [@oldtimer-11](https://community.cartalk.com/u/oldtimer-11)\ **Post date:** [December 7, 2018, 6:51pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/3 "2018-12-07T18:51:40Z")
If your engine is running smoothly and easy to start, you don’t need valve seats. If you are worried about unleaded gas, I used to run Amoco High Test unleaded in the 60s all the time and it had no lead. There are also lead substitutes in a bottle. Unless you are using this as a daily driver I wouldn’t worry about it. ---
**Author:** ![MichaelVasko](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@MichaelVasko](https://community.cartalk.com/u/MichaelVasko)\ **Post date:** [December 13, 2018, 3:57pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/4 "2018-12-13T15:57:26Z")
Thanks, I think I am good. The old Dart Swinger was turning a 14.85 in the quarter last time I had it to Cecil County Dragway. She’s fun in the quarter mile, but with no roll bars is more than a handful in the corners when driving any distance. Really considering adding them just to make it safer and more pleasurable to drive. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [December 13, 2018, 4:01pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/5 "2018-12-13T16:01:08Z")
I don’t know if they’re still available, but I added a front aftermarket anti-roll bar to my '72 Duster years ago. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [December 13, 2018, 4:33pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/6 "2018-12-13T16:33:15Z")
Turns out Summit has Addco kits (along with other brands) for your Dart. I’m pretty sure it was an Addco that I put on my Duster. ---
**Author:** ![MichaelVasko](https://avatars.discourse-cdn.com/v4/letter/m/e495f1/32.png) [@MichaelVasko](https://community.cartalk.com/u/MichaelVasko)\ **Post date:** [December 13, 2018, 6:04pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/7 "2018-12-13T18:04:07Z")
Thanks, I’ll look into it. It just feels like it wants to roll over onto its nose if you take a corner to quickly. It has no sway bars, no power steering or brakes, but it has the one year only four piston front disk brakes and drum rear brakes. It’s a 340 cu. in., 4 speed car. I had a '71 Duster with a slant six back in the day. I was looking for a Duster when I found the '70 Dart. What does your Duster have? ---
**Author:** ![Purebred](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/purebred/32/46796_2.png) [@Purebred](https://community.cartalk.com/u/Purebred)\ **Post date:** [December 13, 2018, 6:12pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/8 "2018-12-13T18:12:23Z")
I would do a rear sway bar kit too. Addco shows a kit for your Dart, but lists it as out of stock. ---
**Author:** ![texases](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/texases/32/862_2.png) [@texases](https://community.cartalk.com/u/texases)\ **Post date:** [December 13, 2018, 6:16pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/9 "2018-12-13T18:16:24Z")
Oh, it’s long gone. I had it in high school, through college, then sold it a year after I started work. It had the smokin’ 198 CID slant 6 and a 3 on the floor. Slow but sturdy, I pulled a small U-Haul with it from TX to CA and back. ---
**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\ **Post date:** [December 13, 2018, 6:19pm UTC](https://community.cartalk.com/t/1970-dodge-dart-vintage-car-valve-seats/130394/10 "2018-12-13T18:19:31Z")
I thought that the front stabilizer bar was standard equipment on 340 cars, do your lower control arms have the mounts for the stabilizer links? The 6 cylinder cars didn’t have the mounts on the lower control arms for the stabilizer bar but those are included in the Addco kit.