Hey guys gonna do a gear swap pretty soon and wanted some more input. My 95 ecss z71 has a lq4, mainly stock, Cai and will be nelson tuned within the month. Probuilt 60e, and a circle d 2800 tc. It has 33" tires on it now and might possibly have 35s on it next go round but haven't made up my mind. I was thinking about 4.56s and true track for the rear what do you guys think?
Josh ----- 95 Z71 ecss -6.0 swap finished 10k miles ago, nelson tuned, built tranny, 2800 converter, 4.56s truetrac
2000 z28 a4 longtubes, true duals, ported throttle body, ls6 intake, slp lid (lost in divorce lol)
79 camaro small block street car 11.60 @ 116 (sold)
if you're going to 35's for sure, do the 4.56 gears, if not, the 4.10's are just right for the 33's.
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'94 Chevy Truck: 8.9 et, 408 twins
Yea 4.30s would be good too for both! But id listen to ur tuner!!
Alright sweet, thanks guys!
2000 z28 a4 longtubes, true duals, ported throttle body, ls6 intake, slp lid (lost in divorce lol)
79 camaro small block street car 11.60 @ 116 (sold)
Another question. Any guesses on where my rpm would be with both gear sets on the 33some at 70mph? My truck is the daily driver at the moment but it never sees a lot of highway time. My daily commute to work is 15 miles at an average speed of 55-60, and its the weekend toy, so with 4.56s the rpm would probably be around 2400 at highway speed??
2000 z28 a4 longtubes, true duals, ported throttle body, ls6 intake, slp lid (lost in divorce lol)
79 camaro small block street car 11.60 @ 116 (sold)
http://www.csgnetwork.com/multirpmcalc.htmlOriginally Posted by scarybowtie
Use the bottom calculator. The OD ratio (Transmission Final Gear Ratio) for a 4L60 is .70 in case you didn't know.
2011 Silverado LT 5.3 bone stock(for now)
(gone but not forgotten)02 Avalanche Z-71 Vortech supercharged 3.12 pulley 10psi, SMC meth injection, 33 12.50-17 procomp AT, 17x9 procomp wheels, AVIC-N2 NAV, 4.56 gears, Detroit TrueTrac, 2500 stall converter, transgo HD2 shift kit, Vette servos, 80mm BBK throttle body, Edelbrock shortie headers Cold Fusion wet shot (60hp), and too many more mods to list. 8.86/18th 472rwhp/499rwtq
with that little bit of driving and that speed, i'd go as steep as you can in that big truck, it's gonna make it feel lighter, i'd say 4.56 then, no less than 4.10's.
Nelson Performance
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'94 Chevy Truck: 8.9 et, 408 twins
Amen! My 5000 lbs minivan feels super light with the 4.10s so I can vouch for that! Im runnin a smaller tire than you are tho...
I run 33's with 4.56's.
Not saying its right but I like it.
My brother has 4.88 on 35's.
We are just trying to stay a little over a stock equivalent ratio of 4.10.
I had ran 488s with 30" tires....with a 35" id run 488s if you can ...truck will be happier
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