Re: [Chevelle-List] Rear End Ratios

[Clint Hooper]

If you have that kind of money to throw around,why not just install a built 4L80? All it is is a HD TH400 w/OD. Cheaper,strong,and less hassle. If it was my car,I wouldn't even go that far. If the car already had a TH400 installed,just install a set of 3.55's or something close. Add a decent torque converter and you're ready to go. For a pure street car,the difference between a 4.10 cog and a 3.55 is negligible,anyway. A big block can easily pull a tall gear and 28" tall tire. Ring gear spacers? In this day and age,I would not even consider using one. No offense,Larry. Clint Hooper LT5 Registry Wichita Falls,Tx (940) 855-6636 anytime '90 ZR-1 Red/Red #952 TX TAGS: USA ZR1 http://www.LT5Registry.com/ ----- Original Message ----- From: [EMAIL PROTECTED]   tom has already told me his 4:10 have a 4 series carriers it was common practice to use a 3 series carrier with a ring spacer when going to 4 series gears. his does not have that so he will have to change. my suggestion offline (tom and i are really good buddies in spite the fact we live on opposite coasts) to tom was to keep the th400, fix the gears (the reason he is changing them is they are howling) and put a gear vendor over drive in. the gears are shot any old way you look at i so figure them a wash. i say to change over to 700r4 probably total is $1000.00 - 1250.00. to do the gear vendor you are looking at $2500.00. bottom line is you get for $1250.00 -1500.00 more a stronger transmission with a separate overdrive with  six split speeds forward.the gear vendor is rated for 1200 HP. simply unbolt rear housing of th400 , bolt over drive on, shorten drive shaft and do a little wiring.you end up with a final drive of .75:1                                                             Larry