Services
12 bolt GM rearends are what we do. We specialize in rebuilding, repairing, restoring and modifying rearends. Both 10 and 12 bolt services are offered.
Do you like Chevy Inline 6's? We can help you with all of the modifications needed. We specialize in EFI, Turbo and performance modification.
12 bolt GM rearends are what we do. We specialize in rebuilding, repairing, restoring and modifying rearends. Both 10 and 12 bolt services are offered.
Do you like Chevy Inline 6's? We can help you with all of the modifications needed. We specialize in EFI, Turbo and performance modification.
12 Bolt rears
Many Chevelle, Camaro, and Impala 12 bolt housings in stock.
Head services Offered
A complete head can be worked up for your project. Best to contact me tom@12bolt.com
The standard package includes most items listed below. Cost can vary.
Head dis assembly
Degrease/ Hot tank
Magnuflux for cracks
Shotblast
New guides/ Machine for seals/ ream to size
1.84 intake valve throat cut/ Cut seat
1.94 Intake valve throat cut/ Cut seat
Install hardened seats/ cut seat to height
Installation of lump kit
Mill head .007 per cut ( may need multiple cuts)(typically .030 total)
Port intake/ exhaust ports
Pull factory press in studs
Mill rocker studs for 7/16 rocker studs
Open rocker arm slots for 3/8 pushrods(extra)
Performance valve job
Assembly/ Shim springs
Guide plates (3/8)(extra)
Performance springs
Performance valves
Performance retainers
We offer total services for rear-end work. From parts to repair we have your rear covered.
Prices:
eaton posi
Yukon gears most ratios
complete install kit w/axle bearing seals
Yukon axles
1310 yoke
services include:
rebuilding/setup
tube straightening
ford ends install
blasting
degreasing internally
check your posi
A complete head can be worked up for your project. Best to contact me tom@12bolt.com
The standard package includes most items listed below. Cost can vary.
Head dis assembly
Degrease/ Hot tank
Magnuflux for cracks
Shotblast
New guides/ Machine for seals/ ream to size
1.84 intake valve throat cut/ Cut seat
1.94 Intake valve throat cut/ Cut seat
Install hardened seats/ cut seat to height
Installation of lump kit
Mill head .007 per cut ( may need multiple cuts)(typically .030 total)
Port intake/ exhaust ports
Pull factory press in studs
Mill rocker studs for 7/16 rocker studs
Open rocker arm slots for 3/8 pushrods(extra)
Performance valve job
Assembly/ Shim springs
Guide plates (3/8)(extra)
Performance springs
Performance valves
Performance retainers
We offer total services for rear-end work. From parts to repair we have your rear covered.
Prices:
eaton posi
Yukon gears most ratios
complete install kit w/axle bearing seals
Yukon axles
1310 yoke
services include:
rebuilding/setup
tube straightening
ford ends install
blasting
degreasing internally
check your posi