Hey everyone,
I am looking for info/advice on upgrades for my stock 273 dart GT. This is my current daily driver, however, I want to make the car more lively and powerful without going too far obviously as mileage and reliability are important. I have had issues recently with stalling/and or vapor lock once the car is hot and at idle. Had a couple mechanics say my carb needs a rebuild as well. (This is/was my first car and I'm learning). I would rather put money/energy into a 4 barrel carb/intake upgrade first for this reason.
So firstly I have been searching on the forums and come to the conclusions that my options for intakes are the LD4B and PERFORMER intakes. I am leaning towards the PERFORMER as I can buy it new online. If someone could provide pros and cons to these as well as ease of swapping either onto my stock 273 1967 v8. As well as what carb may be best for my goal/setup.
The second upgrade I was considering doing alongside this was my exhaust and/or headers. I really hate how quiet the car is lmao. I do have a muffler that i bought months ago before I was in an accident with my car. While my car is currently being repaired in the shop i want to do my research and prepare/buy parts to upgrade the dart once I get it back. I will attach a photo of the muffler I bought below. I believe I can only use this muffler if I keep the car single exhaust (IF someone can confirm this that would be great).
However, I am thinking of going to dual exhaust and want to know the best/most affordable way to do that with regards to headers, X pipes, H pipes, etc. Any info on this would be greatly appreciated. How much of a sound/performance difference will dual exhaust make?
I browse SUMMIT booklets etc and look at headers etc and was curious for example when I see headers that say they're applicable to a 273 mopar. How many issues would I have fitting them etc? More insight/advice on headers would be nice as well as if I need them to do dual exhaust.
Appreciate any info/advice as well as tips on other upgrades you guys think I should maybe focus on. SORRY for the noob questions thanks guys.
View attachment 1716311385