Blk97WS6

iTrader: (19)

Whats up everyone, i was looking to order some 4.10s for my 99 Z28. its a 6spd w/ 3.42 rear. I was looking on summits site and they said the richmond 4.10s ring and pinion part no. RMG-6903221 wont work for the 99 and up 3-series carrier because of the factory torsen positraction unless you buy a special split paddle block kit. is this true? I called summit and they said it wont work, but i have never heard of this. i will call Richmond tomarrow and see what they say, but id like to hear from you guys in the meantime. thanks for the help.

BIG_MIKE2005

iTrader: (116)

As long as you get a set for the correct rear, they should work. Make sure they are for a 7.5 GM 10-bolt. Also look on some sponsors sites. Check with TSP

lt1formula2000

iTrader: (10)

Summit was right the 99 up Torsen diff uses a rectangular shapped paddle to hold the axles/c-clips in, instead of a round pin like older cars. With 4.10's the paddle will hit the teeth of the ring gear and you won't be able to get the cross bolt in. Now you can buy the 2 piece paddle kit that will work with higher(numerically) than stock gears. Or during reassembly you can spend 5 mins. with a grinder and remove what material you need to from the paddle. And when grinding it the required amount of material you must remove to make it fit will in no way compromise the paddles ability to do it's job or it's strength. unless you go ape **** and turn it into a tooth pick.

1999Z28

you can grind it down real easily and make it fit. i had the same deal.

Blk97WS6

iTrader: (19)

awesome thanks guys. ill probably end up grinding it down, but just wondering how much does that kit cost. is it real cheap, or do they charge an arm and a leg for it?

YOUNG

iTrader: (3)

If the kit is not FREE why would you not want to grind down the edge of the block. That costs nothing to do.

keliente

iTrader: (22)

Well I'll be damned

#9, #5

https://ls1tech.com/forums/gears-axles/412366-rear-end-faq.html

Blk97WS6

iTrader: (19)

thanks

Blk97WS6

iTrader: (19)

damn $175 from summit....ill definetly grind the thing down

1999Z28

you can find 4.10s all day on ebay for 100ish. so what if they're used. i doubt the 4cyl s10 they came out of did any harm.

Big Budda

it works with just a little tappin from a hammer

Wrench7777

i understand with a 4'11 and up u need a torsen split block peddle, to put in the center of the worm whole carrier.

does a 390 ring and pinion need the paddle block to be cut?


i have been looking non stop, i cant find any solution this mess that i am in. any body know of where i can get one.?

01ssreda4

iTrader: (96)

Only thing you need to do is file the block down. I use a 4 1/2 grinder and a flap disc. Only takes a minute or two. You only file a small portion of it.

VandykeT/A

I've grinded several down with no problems.

AnotherWs6

iTrader: (17)

lol - "unless you go ape ****"