Posted By: Jay68RR
383 modifications update - 05/28/08 05:20 PM
A few weeks back I asked some questions re: 383 upgrades I was making. Here are the results:
I put in a Sure Grip unit and uped the gears from 3.23 to 3.73. I was going to do 3.55 but that changed. I also had put in the Comp XE268 cam, lifters and valve springs. (no head work yet. Don't worry, I know some people on here don't like to talk about 440Source, Eddie, or any heads because somewhere on here it's been covered).
The car pulls like a champ above 2k. Between the 3.73s uping the revs to the power band and the cam being a bit bigger than stock- upshifts and downshifts are noticably stiffer and more serious. It idles at 800rpm or so (with a nice lope), and 600-700 when put in gear. Not sure if that's too low.
I didn't get the speedometer accurate yet, but from my best guess, it's spinning at 2100 at 45mph.
Next year it's the intake and heads. I need to find out if the angled spark plugs on the Eddies interfere with the headers. I hope this helps the 383 owners out there!
I put in a Sure Grip unit and uped the gears from 3.23 to 3.73. I was going to do 3.55 but that changed. I also had put in the Comp XE268 cam, lifters and valve springs. (no head work yet. Don't worry, I know some people on here don't like to talk about 440Source, Eddie, or any heads because somewhere on here it's been covered).
The car pulls like a champ above 2k. Between the 3.73s uping the revs to the power band and the cam being a bit bigger than stock- upshifts and downshifts are noticably stiffer and more serious. It idles at 800rpm or so (with a nice lope), and 600-700 when put in gear. Not sure if that's too low.
I didn't get the speedometer accurate yet, but from my best guess, it's spinning at 2100 at 45mph.
Next year it's the intake and heads. I need to find out if the angled spark plugs on the Eddies interfere with the headers. I hope this helps the 383 owners out there!
