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Author Topic:   Rear end
Winland Racing
Dirt Roller

Total posts: 22
posted March 19, 2003 02:06 PM
I have a metric 7.5 rear end with 273 gears. I am looking to replace them with 373 gears. Where do I find the adapter needed to convert my high gear rear end to a lower geared rear end? I think I read somewhere that an adapter is needed. Any assistance would be appreciated.
WR

david197377
Dirt Roller

Total posts: 5
posted March 19, 2003 03:34 PM
Try Richmond Gear they should heve what nedd. If they dont thay can direct you to someone that can help.



racer17j
Dirt Forum Champ
Total posts: 1565
posted March 19, 2003 04:21 PM UIN: 54865418
pretty much anybody that sells gear sets will have them or you can find a carrier that had a 3.23 and up gear on it and you won't need to buy one. probably your cheapest route would be to find a s-10 or blazer in the junk yartd that has a set in up then all you will need to do is change the pinion bearing

Winland Racing
Dirt Roller

Total posts: 22
posted March 19, 2003 06:01 PM
I ******* up and already bought the carrier at pick n pull for 85.00 big ones. I believe I have a type 2 carrier. It looks like I have 2 choices:
1) Get the adapter (have an email in with Richmond gears)
2) buy a new carrier, type 3 with a gear in it larger than a 323 and up.

Does anyone have an idea of the price of the adapter??
Thanks again,
WR

rico 08
Dirt Freak

Total posts: 372
posted March 19, 2003 06:04 PM
if you need a cheap one i beleive MR GASKET makes some.

Winland Racing
Dirt Roller

Total posts: 22
posted March 20, 2003 01:51 PM
I have a delema. I called Mr Gasket, Richmond and Summit tech support and they state that they do not have a ring gear spacer in their book for a 79 7.5 rear end. They only go up to year 75. Richmond sells a stage 2 373 gear part # 490007-1 for 199.00 that is designed to fit into this housing. Too expensive!!
Where can I get this spacer? Who sells it? Does anyone know the part number?
It looks like this is a common upgrade. How is everyone else doing it. I know the easy answer is to purchase a stage 3 carrier but I am sure that if there is a ring gear spacer, then it would be cheaper than a new housing (85.00 at pick n pull).
Thanks,
WR

LUBEGUY07
Dirt Maniac

Total posts: 156
posted March 20, 2003 05:16 PM
how much u want to spend on a number three carrier , a guy i work with ha one with 3.42 gears on them but i bet he will sell just the carrier

nate 11
Dirt Full Roller

Total posts: 52
posted March 20, 2003 06:23 PM
check with www.mrracingequipment.com

Winland Racing
Dirt Roller

Total posts: 22
posted March 21, 2003 02:55 PM
I have an email in with M&R and an ebay guy that will sell me a stage 3 with 373 for 100.00. I am still waiting for a shipping quote. I am also working with a local shop. I will advise what I find out. In reading other posts, I never acknowledged the carrier differences until it was too late. I had a carrier with welded spiders so I had to purchase a new carrier (not allowed in my class). For those of you doing the same thing.... Dont make the same mistake I did.

racer17j
Dirt Forum Champ
Total posts: 1565
posted March 22, 2003 10:50 PM UIN: 54865418
do a search for 4.11 on ebay a guy has the open carrier you need buy it now for $30. it's listed as a posi but he corected himself in the description

SS90
Dirt Roller

Total posts: 13
posted March 23, 2003 08:14 AM
Capital motorsports warehouse has a 7.5 gm ring gear spacer with bolts for 44.95. www.cmwraceparts.com

SS90
Dirt Roller

Total posts: 13
posted March 23, 2003 08:15 AM
part # mot075050

teenwolfnorcator
Dirt Roller

Total posts: 12
posted March 23, 2003 08:59 PM
wr, 2.00-3.15 uses thick gear, 3.15-4.10 uses thin gear, those are for stock ratio's, so u will need either the thick ring gear or spacer. check junk yards for a late 70's 4 door car, i found one that had 3.42 in it. good luck on what u decide
teenwolf

Gordon3E
Dirt Full Roller

Total posts: 67
posted March 31, 2003 04:53 AM
WR... A Astro van has the carrier you want.Can pick them up at any junk yard for 150.00. But you can "only" use the carrier.Rear End won't bolt up and the Axels arn't what you need.My advice is to Scrap that 10 Bolt and get a Ford 9"."Look at the Post right before yours on here".It'll cost you over 700.00 dollars to get that 10 Bolt to work properly. I just went through it.LOL. Jeg's had the best price.But the carrier and Posi Sleeve will cost alot.The carrier is 400.00. Good Luck 3e.!!!

Gordon3E
Dirt Full Roller

Total posts: 67
posted March 31, 2003 04:58 AM
Also the carrier in the Astro Van is Posi.

zoomy#74
Dirt Roller

Total posts: 19
posted March 31, 2003 06:17 PM
I know you want 373's, but I have a complete rear end that has 411's (new, richmond) mini spool (new). Professionally built. Other new items. Never been raced. Asking $225.00. You can e-mail me at 'lizard@chipshot.net'.

Winland Racing
Dirt Roller

Total posts: 22
posted April 01, 2003 12:49 PM
I just won a bid on ebay for 342 gears with carrier for $71.00.

Question on another subject....
I got a 2 speed powerglide and have a shifter from I believe an Izuzu. I cant seem to adjust it correctly to get P,R,N,2,1. I can get PRN2 or RN21. Any ideas on what shifter I should get to get the adjustment correct? ( generally run without park and then adjust it when I load it on the trailer...pain in the ***)
Thanks,
WR

nate 11
Dirt Full Roller

Total posts: 52
posted April 01, 2003 04:11 PM
make sure shifter isn't hiting the floor board or something. or just keep adjusting on it' thats what i did and finally got it. you can go to local parts house and buy cheap shifter for automatic. it will be for a 3speed but will work. so if you ever change trans. to a 3 speed auto you will have a shifer for it too. hope this help.. nate 11

wam24u
Dirt Full Roller

Total posts: 66
posted April 01, 2003 08:28 PM
The best thing I ever found was a homemade shifter.
Find you a shifting linkage from a manuel tranny( the one that bolts to the tranny that is about 4" long).
Remove you linkage from the powerglide, and bolt this on there.Now get you a piece of round steel and weld a washer to the end of it. Cut a nice clean slice close to the tranny tunnel slide the steel through and put a bolt through and double nut it.
Then use an old inner tube to make a boot to keep dust and dirt out.
I have used this setup for years, and NEVER had a problem.

racer17j
Dirt Forum Champ
Total posts: 1565
posted April 04, 2003 03:01 AM UIN: 54865418
you want cheap and simple shifer get a piece of 3/8 threaded rod and bend a little handle on one end thats all i've ever done never broke or jammed on me like cables do cost ya about 3 bucks plus some nuts and bolts that you have laying around the shop already

Winland Racing
Dirt Roller

Total posts: 22
posted April 04, 2003 11:49 AM
Thanks for all of the input.
Racer 17J...You are right, I do have a lot of nuts hanging around the shop.....
WR

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