fxrsrider

My truck: 1973 620 L16 SWB A/T My Trans: Jatco 3N71B My Rear end: 4.625 Been researching the "620 5 speed swap." datzenmike has been a godsend in helping to understand this whole thing. Here's where I'm stumped. What is the "ideal" 5-speed to differential gearing for daily street performance. By "daily street performance" I mean, quick take off when the light turns green, quick through gears, and a comfortable drive in the HOV lane for an hour+ drive. Something that's fun to drive. Please assume that the L16 engine is just fine...built and tuned for street performance. (it's not a 1.8 or a 2.0 so please save the "you should have this xyz engine instead" comments for a different thread) I've heard that the '80-'83 280zx non turbo close-ratio gearboxes paired with a 3.54 rear differential is "what everyone wants." Is that true? If so, what is the benefit of this pairing as opposed to others? Are there comparable box-to-rear end parings that are good for our little trucks? datzenmike has generously explained how the mid-ratio 5 speed gearboxes would best suit my current 4.625 rear end. Is there a better (or rather, ideal) rear-end gear ratio for the mid-ratio boxes for daily street performance? To sum it up: Which is mo' betta for a fun, zippy ride: a close-ratio with X.XXX rear end OR a mid-ratio with X.XXX rear end? Thank you, in advance!

Thanks guys. Good looking out. I appreciate the input. ___________________________________________________________________________________________________ As a side note, its a shame to hear the news. It's never good to hear when someone with such great talent, ability, and passion gets caught up in the web.

Anyone know if "Steroid" (steroid620@yahoo.com) is still around? Looks like he was making a nice FG replacement dash some time ago. But it seems he's not been active here in the forum for sometime. I'd love to get ahold of one of those dashes (or the molds if he's not interested in them anymore). ______________________________________________________________________________________________________________________ Newbie here, first post. Thanks to everyone who maintains this site and those who contribute to the useful info! I'm a '73MY/'72PY 620, automatic, no clue how original anything on it is.