Looking for a better rear end gear ratio for cruising speeds. Current set up is 410 gears, TF 904 with a 2000 stall and 25.5in diameter tires, which screams at 4k rpm around 70 mph. Ideally I would like to be around 2,500 rpm at 70 mph.
Unfortunately, I do not have that info. Came with the car when I bought it and didn’t get too much details from the previous owner. Is there any easy way of finding out without pulling the cam?Thanks. The only problem is the description “Mild Cam” has no meaning since it is an opinion on what a mild cam is.
If you have cam specs, or know the grind number/model number of the camshaft, please provide them.
YesWill a notice a big decrease in acceleration going from a 4:10 to a 3.23?
Sure there will be a bit less low end grunt, but for a probably close to stock 360 the 4.10 is less than desirable. Gearing is just part of the equation.Will a notice a big decrease in acceleration going from a 4:10 to a 3.23?
Sure there will be a bit less low end grunt, but for a probably close to stock 360 the 4.10 is less than desirable. Gearing is just part of the equation.
Bin wantin' - ta have 3:91s now...Don’t overthink it. Just buy 3.23s with a sure grip. You can thank me later.
Couldn't agree more Rusty! That's what I was trying to say. If I was interested in any type of performance in my 71 Demon, it would have more axle ratio and a much looser converter. The only true way to have your cake and eat it too is an OD trans. This let's you have the higher axle for launch/acceleration and the lower rpms on OD on the highway. There's no free lunch!!Personally, I think you're going the wrong way. An OD transmission is a better choice, IMO and leave the gear in there you have now.
....and 3.55s? That's the pussiest gear you can ever choose IMO and here's why. It's too low for any real highway cruising, as the RPMS will still be fairly high and they are too high for really any kind of real performance driving. IF you stick with a non OD transmission, the lowest gear I'd use would be a 3.23 if you want to retain some semblance of decent cruise RPM, but a 2.94 or even 2.76 would be even better. Just one peon's opinion.
Bin wantin' - ta have 3:91s now...