12 bolt coming soon to a garage near you!

GTR1999

GTR1999

Gearhead
Joined
Mar 24, 2008
Messages
435
Location
New Haven CT USA
Hey guys,
One of my next projects in the coming weeks will be a 373 12- bolt build. It will be built with all Tom's parts. Tom offers these built several ways,I'm only going to build these one way, using the best Tom has.
Stay tuned and I'll put up some pictures when I get into this. Bridgeport, lathe, and grinder are must for this job.
 
When I up the boost and shatter my diff, I'll need you to build one of these for me. Let us know how much this mod will run, ballpark.
 
Tom sells just 12 bolt diffs, less axles and maybe cover, for $3,200. I haven't gotten the parts quote yet but would guess they'll be in the same range maybe a little more. I'm told prices are going up again 10/1 so who knows. Part prices have been crazy the past 2 years. Timken went up 11% since Jan '08 and will go up again by 1/09.
 
I can,t tell you the number of times I see guys with chevelles,camaros, etc, that have problems with a 10 bolt rear. and the first thing you hear is get a 12 bolt, well, a decent 12 bolt is ok, but pro built it can easily cost over $3K, and if your swapping to a stronger rear differential anyway look over your options,

ok I just got to ask, why would anyone pay $3200 plus for a 12 bolt when theres bolt in rears based on a hybrid dana 60 available with its 9.75" rear gears that are darn near bullet proof,that are significantly stronger, and depending on options ,costs less vs the chevy 8.7/8" gears and lower strength assembly
yes the chevys 25 lbs lighter but that 25 lbs is all steel that makes the dana 60 hybrid significantly stronger

http://www.strangeengineering.net/catalog/index.html

I destroyed several 12 bolts beore swapping to a dana 60 with a nitrous BBC in a camaro, I installed a dana 60 and never had another problem
075.jpg


the reason I bring this up, is that theres DOZENS of options

http://dfwmotorsport.com/Fairlane/9inchrearends.htm
http://www.kevinstang.com/Ninecase.htm

http://www.ford-trucks.com/article/idx/9/200/article/Dana_60_Rebuild.html

http://www.off-road.com/trucks4x4/article/articleDetail.jsp?id=198404

http://www.autohobbydigest.com/dana.html

http://www.pirate4x4.com/tech/billavista/PDFs/Dana 60 Manual (Rea Axle).PDF

http://www.offroaders.com/directory/axles/dana60.htm

http://www.currieenterprises.com/CESTORE/alldana60.aspx


the ford 9" and dana 60 rear were used for years in trucks and a few cars, theres still plenty out there in salvage yards and many are also reasonably priced
 
Last edited:
You must log in or register to reply here.

Latest posts

Back
Top