A-833 2.47 1st gear change to 3.09
Thanks @AJ/FormS . My 340 is low comp wimp compared to what it could/should be.
I believe the engine runs better than in 1973 but it’s still hot factory slugs in it.
To be honest I am planning an engine build but was going to do that after I built the 8.75 and figured out trans gearing.
I was planning on using the same cam and wanted to find a forged crank to switch to if at all possible. I’m fine with the factory crank but if I’m going to have it apart and can find a forged crank I’ll darn sure scoop it up.
I have a set of highly ported X heads I may use. I want to keep the originality of iron heads.
I have a roadrace Milodon pan on my 416 engine, below, I can rob or just buy a new one.It really needs a rear sump anyway.
I have a 650 hp 408, below, in a 5-speed 70 ‘cuda and the 550hp 416 waiting for another project.
I just really like this Duster with 3.23 gears. I like that it idles well, drives well, gets good mileage, and doesn’t need attention all the time. Good stock engine. The most I want to go to it is add some compression and get it to pre-low compression era performance.
So, @AJ/FormS , thanks for the pointers. I do have a rotating assembly replacement. I just wanted to do gearing changes first. The car isn’t undriveable. Like I said, it’s a great street car but my main complaint is when you let off onto first it wants to go 10 mph right away. To go slower is a lot of clutch play. EVERYTHING else is pretty good. All it is is just the low comp 340 and 1st gear.
So, yes, the engine will get rebuilt in the next year. I’m not going numerically higher than 3.23 for now. I’ll just do some rearranging and do the engine before regearing the trans.
PS. I love how this topic went straight to , “Your engine is old tired and worn out .” It’s just a low compression 1973 340 put back to stock spec except for a lil extra duration and lift! It’s not old tired OR worn out. It has fresh rings, bearings, and a cam 4,000 miles ago by previous owner. I had no control over that but Arthur (PO) wanted this car to be super duper all original. The engine was assembled when O got the project. He’s dead now but I’ll respect his wishes to a point, and that puts alloy heads and mini-tubs out. Engine will be rebuilt but trying to narrow down gearing.
Thanks @AJ/FormS . My 340 is low comp wimp compared to what it could/should be.
I believe the engine runs better than in 1973 but it’s still hot factory slugs in it.
To be honest I am planning an engine build but was going to do that after I built the 8.75 and figured out trans gearing.
I was planning on using the same cam and wanted to find a forged crank to switch to if at all possible. I’m fine with the factory crank but if I’m going to have it apart and can find a forged crank I’ll darn sure scoop it up.
I have a set of highly ported X heads I may use. I want to keep the originality of iron heads.
I have a roadrace Milodon pan on my 416 engine, below, I can rob or just buy a new one.It really needs a rear sump anyway.
I have a 650 hp 408, below, in a 5-speed 70 ‘cuda and the 550hp 416 waiting for another project.
I just really like this Duster with 3.23 gears. I like that it idles well, drives well, gets good mileage, and doesn’t need attention all the time. Good stock engine. The most I want to go to it is add some compression and get it to pre-low compression era performance.
So, @AJ/FormS , thanks for the pointers. I do have a rotating assembly replacement. I just wanted to do gearing changes first. The car isn’t undriveable. Like I said, it’s a great street car but my main complaint is when you let off onto first it wants to go 10 mph right away. To go slower is a lot of clutch play. EVERYTHING else is pretty good. All it is is just the low comp 340 and 1st gear.
So, yes, the engine will get rebuilt in the next year. I’m not going numerically higher than 3.23 for now. I’ll just do some rearranging and do the engine before regearing the trans.
PS. I love how this topic went straight to , “Your engine is old tired and worn out .” It’s just a low compression 1973 340 put back to stock spec except for a lil extra duration and lift! It’s not old tired OR worn out. It has fresh rings, bearings, and a cam 4,000 miles ago by previous owner. I had no control over that but Arthur (PO) wanted this car to be super duper all original. The engine was assembled when O got the project. He’s dead now but I’ll respect his wishes to a point, and that puts alloy heads and mini-tubs out. Engine will be rebuilt but trying to narrow down gearing.