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American Automatics

Specialising in Classic American Transmission Rebuilding

Gearboxes in stock awaiting rebuild


Ford C6 - FE block bellhousing fitting

Ford C4 - Pan fill Big block fitting (also good for any other bellhousing if you want to exchange)

2 x Ford C4 - Small block bellhousing fitting 157 tooth size case fill

Ford C4 - Small block bellhousing fitting 164 tooth size case fill

2 x Ford AOD - Small block bellhousing fitting 4-speed overdrive non electronic ideal retrofit

Ford E4OD - Small block bellhousing fitting 4 speed electronic heavy duty only suitable for trucks due to bulkiness needs ECU control

Chevy - 700R4/ 4L60 - V8 fitting - variety of types, 5 x available

Chevy - 700R4/ 4L60 -V8 4X4 version with short shaft for transfer box

Chevy TH350 - long 12in tail housing V8 fitting

Chevy TH350 - BOP (Buick, Olds, Pontiac) V8 fitting

Chevy 4L80E heavy duty 4 speed overdrive electronic - requires a control box for retrofit.

Manual Gearboxes

Chevy - Saginaw 4 speed

Chevy - Muncie M21 4 speed with Hurst competition shifter (Mmmm)

Flathead 4 speed truck box with crawler 1st - fitting is small round style for early flatheads or late french. Has gearstick and handbrake lever with drum brake.

Rebuilt gearboxes for exchange or outright purchase

None currently built ready for sale but any of the above can be built to your spec. Sometimes customers require upgrades so it is always a risk pre-building one as stock and then having to take it apart again !

Engines for sale

I have the following engines available as long blocks (block, crank, pistons, heads, cam, timing gear, sump). These are only available as reconditioned to order and are currently in bits awaiting engineering. They can be built to your own spec. Talk to me and we can work out prices.

2 x Chevy small block 350 V8 2 bolt main - a word about 2 bolt mains - they are perfectly suitable for most applications except extreme HP so don't get hung up on having to have a 4 bolt. 100 millions small blocks made and majority 2 bolt so cant be a bad thing.

Chevy small block 350 V8 4 bolt main - ideally suitable for a 383 build where ultimate strength is preferred.

Ford small block 289 V8 crankshaft only 

Ford 289 heads pair - offers

Ford 302 heads pair - offers