Plus a lot of the tech on new cars is more for the insane pollution standards then anything else followed by performance (hp) and mileage.
Unless if you are inferring to a "Smart Car", I think most cars are heavier today than the pass. My truck is 6,500 lbs and I believe the Challengers and Chargers are in the 4,500 range, thats about 1,000 lbs. more today for each.
Those are heavier for sure. There's a lot of thin gauge steel and plastic parts in the new cars. Even so, the heavy ones get decent mileage because of the efficiency and the transmissions. I could put a 8 speed auto in my Swinger and probably get mid to late 20's for mileage. Same with a 6 speed manual in my 66 Dart 273 car. A 833 o/d will get mid 20's. The new cars may weigh a bit more because of all the safety features. They are also well insulated for sound than the old cars were. My 66 weighs right around 3000# where my wife's Buick Envision weighs somewhere over 3500#. I haven
Very similar to engines like the 403 Olds, 425 Olds and 430 Buick. All of each of those three engines only came one way. In high performance tune with a four barrel. Even the 403s that made it into station wagons. They were the exact same engine as was in the Trans Ams for those years. They would flat out get it.
Did you notice much of a mpg difference between the 3.23 vs 2.94 swap ?
Nope. Not at all.
I would hold onto the 3.23. That's a great gear. Look at it this way. IF you find something that picks your mileage up pretty good, the 3.23 might be something to think about swapping back in.
I don't get it, why have a 340 and detune it to become a sled? I would want my 340 to get 8 MPG and become a "Fire Breathing Animal".
This is ALL very helpful, Thank You!!
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You read my post wrong. What I said was, I did not notice much of a difference between the 318 and 340 until I added the headers and 2.5" exhaust. I had 318 exhaust manifolds on it at the time. Night and day once I installed the proper exhaust. The 318 gave me 14 MPG while the 340 was 10 MPG, but a lot more fun.
I love this! I too put 27" tires on the back. I just might consider trying try this after I do the tune up depending upon how things go. Not sure how to get a 318 cam yet. THANK YOU! 380 miles on a tank would be awesome!
They're all pretty much the same. Amazon has some for between 20 and 30 Canadian.
Hey, this is fantastic, detailed information that I will definitely be able to use, Thank You!! One thing that has come up lately is that after I drive the Demon, put it in the garage, the garage smells pretty bad of gas so I will have to explore before I drive again. I don't smell it when I drive it. I'm also embarrassed to say that I do not own a timing gun, yet. So, any recommendations will be appreciated. Thanks for the vac gauge info!
Get a timing light with digital advance (for accuracy) is my recommendation. The cheaper dial advance lights can be off by a long ways and ones with no advance don't work to check total advance unless your balancer is marked or has a timing tape. Then there's the issue of the mark being hidden behind a bracket and hard to read. @halifaxhops has lights for sale. Send him a pm.
I will do that, THANK YOU!
