Close ratio VS Wide ratio?

[randy]

now on a ls2 gto swap into a car using 4.10 gears the close ratio would be the way to go also correct?

[FETorino]

Originally Posted by randy

now on a ls2 gto swap into a car using 4.10 gears the close ratio would be the way to go also correct?

So chances are you are only running a 26" tire. Combine that with the low 2.97 first gear of a wide ratio and a 4.10 rear gear and your start line ratio would be way low and .50 final drive will make those 4.10s well 2.05. So you will have a first gear good for pulling trailers and a top gear for Boneville. Does that sound like what you want?

JMO close ratio is the only sensible T56.

A guy on another site made this spreadsheet to play around with ratios and their effect. Pretty cool, but I think some of the transmission ratios are wrong.

https://docs.google.com/spreadsheet/...SSExzU2c#gid=0

[DOOM]

[QUOTE=Flash68;443219]Close ratio vs wide ratio is the correct terminology. It's been around for 50 years. Todd's just had his head in the sand with that junk TKO.

Man you guys are brutal!!!Thanx again guys It's just getting old buying stuff twice!

[randy]

Originally Posted by FETorino

So chances are you are only running a 26" tire. Combine that with the low 2.97 first gear of a wide ratio and a 4.10 rear gear and your start line ratio would be way low and .50 final drive will make those 4.10s well 2.05. So you will have a first gear good for pulling trailers and a top gear for Boneville. Does that sound like what you want?

JMO close ratio is the only sensible T56.

A guy on another site made this spreadsheet to play around with ratios and their effect. Pretty cool, but I think some of the transmission ratios are wrong.

https://docs.google.com/spreadsheet/...SSExzU2c#gid=0

lol wow that sums it up. i guess close ratio it is

[intocarss]

Originally Posted by Flash68

Close ratio vs wide ratio is the correct terminology. It's been around for 50 years.

That's the way I remember it

[blazer1970]

I'm running the 2.66 1st gear in my T56 Magnum with a 4.10 gear and 28" tire.
Works great at the strip and on the highway. Just my .02

[gnx7]

The 2.66 1st gear version is what 99% of people are buying. You don't need a deeper 1st gear gear or you will simply blow the tires off and the nice thing is that 5th gear is .80 which is a closer ratio if you were to do some top speed accelleration "runs."

While the .50 overdrive is nice in the other unit.... i doubt any of us are building these for commuting and the end all be all in fuel economy.

I have the 2.66 1st gear version and 3.25 gears out back. Hoping for 750rwhp/750rwtq+ on e85. Holley EFI just announced their partnership with Davis Technologies (www.moretraction.com) for a traction control module. I won't be having traction issues when trying to ramp up the boost thru the gears. It is rather affordable too. ($599 base model or $999 for a self learning fully tuneable unit) Uses a driveshaft sensor to operate.

[Vegas69]

I prefer my right foot.

[DOOM]

2.66 Is a done deal thanx to Todds expertise!! I got it all beefed up with all the goodies to handle a ''LITTLE'' more HP . Now all I have to do is get it American Powertrain has no Tremec cases ???? 6 weeks now.. Just called yesterday still nada!!!

[Flash68]

Originally Posted by DOOM

2.66 Is a done deal thanx to Todds expertise!!

Expertise? Based on what... his TKO experience?